{"id":107,"date":"2015-12-13T21:53:05","date_gmt":"2015-12-13T13:53:05","guid":{"rendered":"http:\/\/www.softeng.cn\/?p=107"},"modified":"2015-12-13T21:53:05","modified_gmt":"2015-12-13T13:53:05","slug":"%e5%9f%ba%e4%ba%8ephp%e7%9a%84ajax%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%88%e6%95%99%e7%a8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.softeng.cn\/?p=107","title":{"rendered":"\u57fa\u4e8ePHP\u7684AJAX\u5b66\u4e60\u7b14\u8bb0\uff08\u6559\u7a0b\uff09"},"content":{"rendered":"

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<\/p>\n

\u4e00\u3001\u57fa\u7840\u77e5\u8bc6<\/div>\n
1\u3001\u521b\u5efaXMLHttpRequest\u5bf9\u8c61\uff08\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u83b7\u53d6XMLHttpRequest\u65b9\u6cd5\u4e0d\u540c\uff09<\/div>\n
\n
\/\/\u521b\u5efaajax\u5f15\u64ce
\nfunction getXMLHttpRequest() {
\nvar xmlhttp;
\ntry {
\n\/\/Firefox,Opera 8.0+, Safari
\nxmlhttp = new XMLHttpRequest();
\n}catch (e) {
\n\/\/Internet Explorer
\ntry {
\nxmlhttp = new ActiveXObject(“Msxml12.XMLHTTP”);
\n}catch (e) {
\ntry {
\nxmlhttp = new ActiveXObject(“Microsoft.XMLHTTP”);
\n}catch (e) {
\nalert(“\u60a8\u7684\u6d4f\u89c8\u5668\u4e0d\u652f\u6301AJAX\uff01”);
\nreturn false;
\n}
\n}
\n}
\nreturn xmlhttp;
\n}<\/div>\n<\/blockquote>\n
\n
2\u3001\u8c03\u7528XMLHttpRequest\u5bf9\u8c61\u7684open(method,url,async)\u65b9\u6cd5\uff0c\u6253\u5f00\u94fe\u63a5\u3002open\u65b9\u6cd5\u7684\u4e09\u4e2a\u53c2\u6570\uff1a\u7b2c\u4e00\u4e2a\u4e3a\u8bf7\u6c42\u7c7b\u578b\uff0cGET\u6216POST\uff1b\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a\u6240\u8981\u8bf7\u6c42\u7684URL\u5730\u5740\uff1b\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e3a\u662f\u5426\u91c7\u7528\u5f02\u6b65\u673a\u5236\uff0ctrue\uff08\u5f02\u6b65\uff09\u6216false\uff08\u540c\u6b65\uff09<\/div>\n
3\u3001\u8c03\u7528XMLHttpRequest\u5bf9\u8c61\u7684<\/div>\n
xmlhttp.setRequestHeader(“Content-type”,”application\/x-www-form-urlencoded”)\u65b9\u6cd5\u6dfb\u52a0HTTP\u5934\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u591a\u7528\u5728\u4ee5POST\u65b9\u6cd5\u63d0\u4ea4\u6570\u636e\u65f6\u3002<\/div>\n
4\u3001\u8c03\u7528XMLHttpRequest\u5bf9\u8c61\u7684onreadystatechange\u5c5e\u6027\uff0c\u6307\u5b9a\u56de\u8c03\u51fd\u6570<\/div>\n
5\u3001\u8c03\u7528XMLHttpRequest\u5bf9\u8c61\u7684send()\u65b9\u6cd5\uff0c\u53d1\u9001\u8bf7\u6c42\uff0c\u5728GET\u65b9\u5f0f\u4e2d\uff0c\u901a\u5e38\u5c06\u6240\u8981\u4f20\u9012\u7684\u53c2\u6570\u663e\u793a\u7684\u52a0\u8f7durl\u540e\u9762\uff0c\u5728POST\u65b9\u5f0f\u4e2d\uff0c\u5c06\u6570\u636e\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165\uff0c\u4e24\u4e2a\u53c2\u6570\u4e4b\u95f4\u7528&\u5206\u5272\uff0c\u4f8b\u5982\uff1axmlhttp.send(“key1=value1&key2=value2”);<\/div>\n
6\u3001\u5728\u6307\u5b9a\u7684\u56de\u8c03\u51fd\u6570\u91cc\u9762\u53d6\u51fa\u670d\u52a1\u5668\u8fd4\u56de\u7684\u503c\uff0c\u56de\u8c03\u51fd\u6570\u4f1a\u88ab\u89e6\u53d1\u56db\u6b21\uff0c\u56e0\u4e3a\u72b6\u6001\u53d1\u751f\u4e86\u56db\u6b21\u53d8\u5316\uff0c\u53ef\u4ee5\u901a\u8fc7\u5224\u65adreadyState\u5c5e\u6027\u7684\u503c\u5224\u65ad\u72b6\u6001\uff0c\u7136\u540e\u6839\u636e\u8fd4\u56de\u4fe1\u606f\u7684\u683c\u5f0f\uff0c\u53d6\u51fa\u8fd4\u56de\u7684\u6570\u636e<\/div>\n
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8\u3001\u5904\u7406\u8fd4\u56de\u683c\u5f0f\u662fxml\u7684\u6570\u636e\u5904\u7406\u65f6\uff0c\u5728\u670d\u52a1\u7aef\u8981\u7528header(“Content-Type:text\/xml;charset=utf-8”);\u8bed\u53e5\u8bbe\u7f6e\u8fd4\u56de\u683c\u5f0f\u4e3axml<\/div>\n
9\u3001\u5728\u8fd4\u56dexml\u6570\u636e\u683c\u5f0f\u65f6\uff0c\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u7684\u662fxml\u5bf9\u8c61\uff0c\u901a\u8fc7XML DOM\u89e3\u6790<\/div>\n
10\u3001\u5728\u8fd4\u56dejson\u6570\u636e\u683c\u5f0f\u65f6\uff0c\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u9700\u8981\u8c03\u7528javascript\u7684eval()\u51fd\u6570\u6765\u6267\u884c\uff0c\u5e76\u8fd4\u56de\u771f\u6b63\u7684json\u5bf9\u8c61<\/div>\n
11\u3001eval\u51fd\u6570\u7684\u5177\u4f53\u4f7f\u7528:var json_obj = eval(\u201c(\u201d+xmlhttp.responseText+\u201d)\u201d);<\/div>\n
12\u3001json\u7684\u51e0\u79cd\u683c\u5f0f\uff1a<\/div>\n
\n\n\n\n\n\n\n\n\n
\n
\u57fa\u672c\u683c\u5f0f<\/div>\n<\/td>\n
\n
\n
\u4f8b\u5b50<\/div>\n<\/div>\n<\/td>\n<\/tr>\n
\n
\n
\u201c{\u5c5e\u6027\u540d\uff1a\u5c5e\u6027\u503c\uff0c\u5c5e\u6027\u540d\uff1a\u5c5e\u6027\u503c\u2026\u2026}\u201d<\/div>\n<\/div>\n<\/td>\n
\n
\n
<script type=\u201dtext\/javascript\u201d><\/div>\n
var dog = {\u201cname\u201d:\u201d\u5c0f\u660e\u201d,\u201dage\u201d:\u201d18\u201d,\u201d\u952e\u201d:\u201d\u503c\u201d\u2026\u2026}<\/div>\n
alert(dog.name);<\/div>\n
alert(dog.age);<\/div>\n
<\/script><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
\n
\n
[<\/div>\n
{\u540d\u79f01\uff1a\u503c1\uff0c\u540d\u79f02\uff1a\u503c2\uff0c\u2026\u2026}<\/div>\n
{\u540d\u79f01\uff1a\u503c1\uff0c\u540d\u79f02\uff1a\u503c2\uff0c\u2026\u2026}<\/div>\n<\/div>\n<\/td>\n
\n
\n
<script\u00a0\u00a0type=”text\/javascript”><\/div>\n
var dog = [<\/div>\n
{“name”:”\u5c0f\u540d”,”age”:”3″},<\/div>\n
{“name”:”\u5c0f\u82b1”,”age”:”4″}<\/div>\n
<\/div>\n
for(var i = 0; i < dog.length; i++) {<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0alert(dog.name);<\/em><\/div>\n

\u00a0\u00a0<\/em><\/p>\n

\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0alert(dog.age);<\/em><\/div>\n

\u00a0\u00a0<\/em><\/p>\n

}<\/div>\n

\u00a0\u00a0<\/em><\/p>\n

<\/script><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
\n
\n
\u6269\u5c55\u683c\u5f0f<\/div>\n<\/div>\n<\/td>\n
\n
\n
<script language=”JavaScript”><\/div>\n
var people ={<\/div>\n
“programmers”:<\/div>\n
[<\/div>\n
\u00a0 \u00a0{“firstName”: “Brett”, “email”:\u00a0\u00a0“brett@newInstance.com” },<\/div>\n
\u00a0 \u00a0{“firstName”: “Jason”, “email”:\u00a0\u00a0“jason@servlets.com” }<\/div>\n
};<\/div>\n
window.alert(people.programmers[0].firstName);<\/div>\n
window.alert(people.programmers[1].email);<\/div>\n
<\/script><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
\n
\n
\u6269\u5c55\u683c\u5f0f<\/div>\n<\/div>\n<\/td>\n
\n
\n
<script\u00a0\u00a0language=”JavaScript”><\/div>\n
\u00a0 \u00a0\u00a0\u00a0var<\/strong>\u00a0<\/span>people ={<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0“programmers”: [<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Brett”, “email”: “brett@newInstance.com” },<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Jason”,\u00a0\u00a0“email”:\u00a0\u00a0“jason@servlets.com” },<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Elliotte”, “lastName”:”Harold”,\u00a0\u00a0“email”: “elharo@macfaq.com” }<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0],<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0“authors”: [<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Isaac”,\u00a0\u00a0“genre”:\u00a0\u00a0“science fiction” },<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Tad”, “genre”: “fantasy” },<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Frank”,\u00a0\u00a0“genre”:\u00a0\u00a0“christian fiction” }<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0],<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0“musicians”: [<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Eric”,\u00a0 \u00a0“instrument”: “guitar” },<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0{ “firstName”:\u00a0\u00a0“Sergei”, “instrument”: “piano” }<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0]};<\/div>\n
\u00a0 \u00a0\u00a0\u00a0window.alert(people.programmers[1].firstName);<\/div>\n
\u00a0 \u00a0\u00a0\u00a0window.alert(people.musicians[1].instrument);<\/div>\n
<\/script><\/div>\n
<\/div>\n<\/div>\n<\/td>\n<\/tr>\n
\n
\n
\u6269\u5c55\u683c\u5f0f<\/div>\n<\/div>\n<\/td>\n
\n
\n
<script\u00a0\u00a0language=”JavaScript”><\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0<\/span>var<\/strong>\u00a0<\/span>people ={<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0“username”:”mary”,<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0 “age”:”20″,<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0“info”:{“tel”:”1234566″,”celltelphone”:788666},<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0 “address”:[<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0 {“city”:”beijing”,”code”:”1000022″},<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0 {“city”:”shanghai”,”code”:”2210444″}<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0};<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0 window.alert(people.username);<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0 window.alert(people.info.tel);<\/div>\n
\u00a0 \u00a0\u00a0 \u00a0 window.alert(people.address[0].city);<\/div>\n
<\/script><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

13\u3001\u4e09\u79cd\u683c\u5f0f\u7684\u5bf9\u6bd4<\/p>\n\n\n\n\n\n
\n
\u6587\u672c\u683c\u5f0f<\/div>\n<\/td>\n
\n
\n
1\u3001\u6570\u636e\u91cf\u5c0f\uff0c\u4f46\u4e0d\u9700\u8981\u548c\u5176\u4ed6\u7a0b\u5e8f\u901a\u4fe1\u65f6\u8f83\u4e3a\u9002\u7528<\/div>\n<\/div>\n<\/td>\n<\/tr>\n
\n
\n
XML\u683c\u5f0f<\/div>\n<\/div>\n<\/td>\n
\n
\n
1\u3001\u683c\u5f0f\u901a\u7528\u80fd\u591f\u548c\u5176\u4ed6\u5e94\u7528\u7a0b\u5e8f\u901a\u4fe1<\/div>\n
2\u3001\u5f53\u8fdc\u7a0b\u5e94\u7528\u7a0b\u5e8f\u672a\u77e5\u7684\u65f6\u5019\u662f\u9996\u9009<\/div>\n<\/div>\n<\/td>\n<\/tr>\n
\n
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JSON\u683c\u5f0f<\/div>\n<\/div>\n<\/td>\n
\n
\n
1\u3001\u539f\u751f\u6001\u6570\u636e\uff0c\u63cf\u8ff0\u80fd\u529b\u5f3a\uff0c\u6570\u636e\u7ed3\u6784\u7b80\u5355<\/div>\n
2\u3001\u683c\u5f0f\u8981\u6c42\u4e25\u683c<\/div>\n
3\u3001\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u662fint\uff0cstring\uff0cfloat\uff0cboolean\uff0carray\uff0cobject\u7b49\u57fa\u672c\u6570\u636e\u683c\u5f0f<\/div>\n
4\u3001eval\u51fd\u6570\u6709\u4e00\u5b9a\u7684\u98ce\u9669<\/div>\n
5\u3001\u5982\u679c\u65e0\u7279\u6b8a\u9700\u6c42\u63a8\u8350\u4f7f\u7528<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

14\u3001\u5982\u679c\u6211\u4eec\u7684\u4ee3\u7801\u6bd4\u8f83\u590d\u6742\uff0c\u53ef\u4ee5\u4f7f\u7528file_put_contents\u51fd\u6570\uff0c\u5c06\u6570\u636e\u8f93\u51fa\u5230\u65e5\u5fd7\u6587\u4ef6\u8fdb\u884c\u67e5\u770b\uff0c\u8c03\u8bd5<\/p>\n

\u4e8c\u3001\u793a\u4f8b\u7a0b\u5e8f<\/div>\n
1<\/strong>\u3001\u4f7f\u7528ajax<\/strong>\u5b8c\u6210\u65e0\u5237\u65b0\u7684\u6ce8\u518c\u754c\u9762<\/strong><\/div>\n
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1.2\u5f53\u7528get\u65b9\u5f0f\u63d0\u4ea4\u6570\u636e\uff08URL\uff09\u7684\u65f6\u5019\uff0c\u5982\u679c\u4e24\u6b21\u63d0\u4ea4\u7684\u6570\u636e\u5b8c\u5168\u76f8\u540c\uff0c\u5219\u5e76\u4e0d\u662f\u771f\u7684\u53d1\u9001\u8bf7\u6c42\uff0c\u800c\u662f\u4ece\u7f13\u5b58\u4e2d\u53d6\u51fa\u4e0a\u6b21\u7684\u6570\u636e\uff0c\u78b0\u5230\u8fd9\u6837\u7684\u60c5\u51b5\uff0c\u6709\u4e24\u79cd\u65b9\u5f0f\u89e3\u51b3\uff1a<\/div>\n
\u7b2c\u4e00\u79cd\uff0c\u5728\u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0\u65f6\u95f4\u6233\u7b49\u65b9\u5f0f\uff0c\u8feb\u4f7f\u6bcf\u6b21\u63d0\u4ea4\u7684\u6570\u636e\u90fd\u6709\u4e0d\u540c\uff0c\u907f\u514d\u6d4f\u89c8\u5668\u7684\u8fc7\u5ea6\u667a\u80fd\u6240\u9020\u6210\u7684\u9875\u9762\u6570\u636e\u4e0d\u66f4\u65b0\u7684\u60c5\u51b5\uff1b<\/div>\n
\u7b2c\u4e8c\u79cd\uff0c\u5728\u670d\u52a1\u5668\u7aef\u7981\u7528\u7f13\u5b58\u7684\u65b9\u5f0f\uff0c\u5728\u670d\u52a1\u5668\u7aef\u52a0\u4e0aheader(\u201cCache-Control:no-cache\u201d);<\/div>\n
1.3\u5982\u679c\u60f3\u5b9e\u73b0\u5728\u8f93\u5165\u6846\u4e2d\u8fb9\u8f93\u5165\uff0c\u8fb9\u9a8c\u8bc1\u7684\u6548\u679c\uff0c\u9700\u8981\u7ed9\u8f93\u5165\u6846\u52a0\u4e0aonkeyup\u4e8b\u4ef6\u7684\u5904\u7406<\/div>\n
1.4\u8fd4\u56de\u6587\u672c\u65b9\u5f0f\u7684\u6e90\u4ee3\u7801<\/div>\n
index.php\uff08\u6ce8\u518c\u9875\u9762\uff09\u5b8c\u6574\u4ee3\u7801<\/div>\n
\n
<html>
\n<head>
\n<title>\u7528\u6237\u6ce8\u518c<\/title>
\n<script type=”text\/javascript”>
\nvar xmlhttp = null;
\nfunction (id) {
\nreturn document.getElementById(id);
\n}<\/p>\n

\/\/\u521b\u5efaajax\u5f15\u64ce
\nfunction getXMLHttpRequest() {
\nvar xmlhttp;
\ntry {
\n\/\/Firefox,Opera 8.0+, Safari
\nxmlhttp = new XMLHttpRequest();
\n\/\/alert(“Firefox,Opera 8.0+, Safari”);
\n}catch (e) {
\n\/\/Internet Explorer
\ntry {
\n\/\/Internet Explorer 6.0+
\nxmlhttp = new ActiveXObject(“Msxml12.XMLHTTP”);
\n\/\/alert(“Internet Explorer 6.0+”);
\n}catch (e) {
\ntry {
\n\/\/Internet Explorer 5.5+
\nxmlhttp = new ActiveXObject(“Microsoft.XMLHTTP”);
\n\/\/alert(“Internet Explorer 5.5+”);
\n}catch (e) {
\nalert(“\u60a8\u7684\u6d4f\u89c8\u5668\u4e0d\u652f\u6301AJAX\uff01”);
\nreturn false;
\n}
\n}
\n}
\nreturn xmlhttp;
\n}<\/p>\n

\/\/\u9a8c\u8bc1\u7528\u6237\u540d\u662f\u5426\u5b58\u5728
\nfunction checkName() {
\nxmlhttp = getXMLHttpRequest();<\/p>\n

\/\/\u600e\u4e48\u5224\u65ad\u521b\u5efa\u662f\u5426\u6210\u529f
\nif (xmlhttp) {
\n\/\/\u901a\u8fc7xmlhttprequest\u5bf9\u8c61\uff0c\u53d1\u9001\u8bf7\u6c42\u5230\u670d\u52a1\u5668
\n\/\/\u7b2c\u4e00\u4e2a\u53c2\u6570\u8868\u793a\u8bf7\u6c42\u7684\u65b9\u5f0fget\u6216\u8005post
\n\/\/\u7b2c\u4e8c\u4e2a\u53c2\u6570\u6307\u5b9aURL\uff0c\u5176\u672c\u8d28\u4ecd\u7136\u662fHTTP\u8bf7\u6c42
\n\/\/\u7b2c\u4e09\u4e2a\u53c2\u6570\u6307\u5b9a\u662f\u5426\u91c7\u7528\u5f02\u6b65\u673a\u5236
\n\/*
\n\/\/\u4ee5get\u65b9\u5f0f\u53d1\u9001
\nvar url = “\/ajax\/register\/register.php?datetime=”+new Date()+”&username=”+<\/span>(“username”).value;
\nxmlhttp.open(“get”, url, true);\/\/\u6253\u5f00\u8bf7\u6c42
\n\/\/\u6307\u5b9a\u56de\u8c03\u51fd\u6570\uff0c\u6307\u5b9a\u7684\u51fd\u6570\u540d\u4e00\u5b9a\u4e0d\u8981\u5e26\u62ec\u53f7
\nxmlhttp.onreadystatechange = chuli;
\n\/\/\u53d1\u9001\u8bf7\u6c42
\nxmlhttp.send();
\n*\/
\n\/\/\u4ee5post\u65b9\u5f0f\u53d1\u9001
\nvar url = “\/ajax\/register\/register.php”;
\nvar data = “username=”+(“username”).value;
\nxmlhttp.open(“post”, url, true);\/\/\u6253\u5f00\u8bf7\u6c42
\n\/\/\u4e0b\u9762\u8fd9\u53e5\u8bdd\u662fpost\u65b9\u5f0f\u53d1\u9001\u65f6\u5fc5\u987b\u8981
\nxmlhttp.setRequestHeader(“Content-Type”, “application\/x-www-form-urlencoded”);
\n\/\/\u6307\u5b9a\u56de\u8c03\u51fd\u6570\uff0c\u6307\u5b9a\u7684\u51fd\u6570\u540d\u4e00\u5b9a\u4e0d\u8981\u5e26\u62ec\u53f7
\nxmlhttp.onreadystatechange = chuli;
\n\/\/\u53d1\u9001\u8bf7\u6c42
\nxmlhttp.send(data);
\n}
\n}<\/p>\n

\/\/\u5904\u7406\u51fd\u6570
\nfunction chuli() {
\n\/\/alert(“\u5904\u7406\u51fd\u6570\u88ab\u8c03\u7528”+xmlhttp.readyState);
\n\/\/\u53d6\u51fa\u4ece\u670d\u52a1\u5668\u8fd4\u56de\u7684\u6570\u636e
\nif (xmlhttp.readyState == 4) {
\n\/\/\u53d6\u51fa\u503c\uff0c\u6839\u636e\u8fd4\u56de\u4fe1\u606f\u7684\u683c\u5f0f\u800c\u5b9a
\n\/\/window.alert(“\u670d\u52a1\u5668\u8fd4\u56de\u503c\u4e3a\uff1a”+xmlhttp.responseText);<\/span>(“myres”).value = xmlhttp.responseText;
\n}
\n}
\n<\/script>
\n<\/head>
\n<body>
\n<form action=”#” method=”post”>
\n\u7528\u6237\u59d3\u540d\uff1a<input type=”text” name=”username1″ id=”username” onkeyup=”checkName();” \/>
\n<input type=”button” onclick=”checkName();” value=”\u9a8c\u8bc1\u7528\u6237\u540d” \/>
\n<input style=”border-width: 0;color: red” type=”text” id=”myres” \/><br>
\n\u7528\u6237\u5bc6\u7801\uff1a<input type=”password” name=”password”\/><br>
\n\u7535\u5b50\u90ae\u7bb1\uff1a<input type=”text” name=”email”\/><br>
\n<input type=”submit” value=”\u7528\u6237\u6ce8\u518c” \/>
\n<\/form>
\n<br>
\n<form action=”#” method=”post”>
\n\u7528\u6237\u59d3\u540d\uff1a<input type=”text” name=”username” \/>
\n<input style=”border-width: 0;color: red” type=”text” id=”myres” \/><br>
\n\u7528\u6237\u5bc6\u7801\uff1a<input type=”password” name=”password”\/><br>
\n\u7535\u5b50\u90ae\u7bb1\uff1a<input type=”text” name=”email”\/><br>
\n<input type=”submit” value=”\u7528\u6237\u6ce8\u518c” \/>
\n<\/form>
\n<\/body>
\n<\/html><\/div>\n<\/blockquote>\n

register.php\uff08\u6ce8\u518c\u5904\u7406\u9875\u9762\uff09<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader(“Content-Type:text\/html;charset=utf-8”);
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader(“Cache-Control:no-cache”);
\n\/\/\u63a5\u53d7\u6570\u636e
\n\/\/username =<\/span>_GET[‘username’];
\nusername =<\/span>_POST[‘username’];
\nif ($username == “wuhaohua”) {
\necho “\u7528\u6237\u540d\u4e0d\u53ef\u7528”;
\n}else {
\necho “\u7528\u6237\u540d\u53ef\u7528”;
\n}
\n?><\/div>\n<\/blockquote>\n
\n
1.5\u8fd4\u56dexml\u683c\u5f0f\u7684\u6e90\u4ee3\u7801<\/div>\n
index.php\uff08\u6ce8\u518c\u9875\u9762\uff09\u6838\u5fc3\u4fee\u6539\u4ee3\u7801<\/div>\n
\n
<script type=”text\/javascript”>
\n\/\/\u5904\u7406\u51fd\u6570
\nfunction chuli() {
\n\/\/alert(“\u5904\u7406\u51fd\u6570\u88ab\u8c03\u7528”+xmlhttp.readyState);
\n\/\/\u53d6\u51fa\u4ece\u670d\u52a1\u5668\u8fd4\u56de\u7684\u6570\u636e
\nif (xmlhttp.readyState == 4) {
\n\/\/\u53d6\u51fa\u503c\uff0c\u6839\u636e\u8fd4\u56de\u4fe1\u606f\u7684\u683c\u5f0f\u800c\u5b9a
\n\/\/\u53d6\u51faXML\u6587\u672c\u683c\u5f0f
\n\/\/\u83b7\u53d6msg\u8282\u70b9
\nvar msg = xmlhttp.responseXML.getElementsByTagName(“msg”);
\n\/\/\u53d6\u51famsg\u8282\u70b9\u7684\u503c
\n\/\/msg[0]\u8868\u793a\u53d6\u51fa\u7b2c\u4e00\u4e2amsg\u8282\u70b9
\n\/\/msg[0]msg[0].childNodes[0]\u8868\u793a\u53d6\u51famsg\u8282\u70b9\u7684\u7b2c\u4e00\u4e2a\u5b50\u8282\u70b9
\nvar msg_val = msg[0].childNodes[0].nodeValue;
\n$(“myres”).value = msg_val;
\n}
\n}
\n<\/script><\/div>\n<\/blockquote>\n
register.php\uff08\u6ce8\u518c\u5904\u7406\u9875\u9762\uff09<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader(“Content-Type:text\/xml;charset=utf-8”);
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader(“Cache-Control:no-cache”);
\n\/\/\u63a5\u53d7\u6570\u636e
\nusername =<\/span>_POST[‘username’];<\/p>\n

\/\/\u8fd4\u56dexml\u683c\u5f0f\u6570\u636e
\ninfo = “”;
\nif (<\/span>username == “wuhaohua”) {
\ninfo = “<res><msg>\u7528\u6237\u540d\u4e0d\u53ef\u7528\uff0c\u5bf9\u4e0d\u8d77<\/msg><\/res>”;
\n}else {<\/span>info = “<res><msg>\u7528\u6237\u540d\u53ef\u7528\uff0c\u606d\u559c<\/msg><\/res>”;
\n}
\necho $info;
\n?><\/div>\n<\/blockquote>\n

\n
1.5\u8fd4\u56dejson\u683c\u5f0f\u7684\u6e90\u4ee3\u7801<\/div>\n
index.php\uff08\u6ce8\u518c\u9875\u9762\uff09\u6838\u5fc3\u4fee\u6539\u4ee3\u7801<\/div>\n
\n
\/\/\u5904\u7406\u51fd\u6570
\nfunction chuli() {
\n\/\/alert(“\u5904\u7406\u51fd\u6570\u88ab\u8c03\u7528”+xmlhttp.readyState);
\n\/\/\u53d6\u51fa\u4ece\u670d\u52a1\u5668\u8fd4\u56de\u7684\u6570\u636e
\nif (xmlhttp.readyState == 4) {
\n\/\/\u53d6\u51fa\u503c\uff0c\u6839\u636e\u8fd4\u56de\u4fe1\u606f\u7684\u683c\u5f0f\u800c\u5b9a
\n\/\/\u53d6\u51fajson\u6587\u672c\u683c\u5f0f
\nvar msg = xmlhttp.responseText;
\n\/\/\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u6210json\u5bf9\u8c61
\nvar json_obj = eval(“(“+msg+”)”);
\n\/\/\u53d6\u51fajson\u5bf9\u8c61\u7684\u5c5e\u6027
\n$(“myres”).value = json_obj.res;
\n}
\n}<\/div>\n<\/blockquote>\n
register.php\uff08\u6ce8\u518c\u5904\u7406\u9875\u9762\uff09<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader(“Content-Type:text\/html;charset=utf-8”);
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader(“Cache-Control:no-cache”);
\n\/\/\u63a5\u53d7\u6570\u636e
\nusername =<\/span>_POST[‘username’];<\/p>\n

\/\/\u8fd4\u56dexml\u683c\u5f0f\u6570\u636e
\ninfo = “”;
\nif (<\/span>username == “wuhaohua”) {
\ninfo = ‘{“res”:”\u8be5\u7528\u6237\u540d\u4e0d\u53ef\u7528”}’;\/\/json\u683c\u5f0f\u7684\u5b57\u7b26\u4e32
\n}else {<\/span>info = ‘{“res”:”\u8be5\u7528\u6237\u540d\u53ef\u7528”}’;\/\/json\u683c\u5f0f\u7684\u5b57\u7b26\u4e32
\n}
\necho $info;
\n?><\/div>\n<\/blockquote>\n

\n
2<\/strong>\u3001\u7701\u5e02\u8054\u52a8<\/strong><\/div>\n
2.1\u6839\u636e\u9009\u62e9\u7684\u4e0a\u7ea7\u884c\u653f\u533a\u57df\uff0c\u52a8\u6001\u52a0\u8f7d\u4e0b\u4e00\u7ea7\u884c\u653f\u533a\u57df\u5e76\u663e\u793a\uff0c\u6bd4\u5982\u9009\u62e9\u7701\u4e4b\u540e\uff0c\u52a8\u6001\u52a0\u8f7d\u8be5\u7701\u7684\u6240\u6709\u5e02\uff0c\u4f9d\u6b21\u7c7b\u63a8<\/div>\n
2.2\u4e24\u4e2a\u9875\u9762\uff0c\u4e00\u4e2a\u4e0b\u62c9\u5217\u8868\u754c\u9762\uff0c\u4e00\u4e2a\u4fe1\u606f\u5904\u7406\u754c\u9762<\/div>\n

 <\/p>\n

2.3\u8fd4\u56deXML\u5f62\u5f0f\u6570\u636e\u7684\u6e90\u4ee3\u7801<\/div>\n
index.php\uff08\u4e0b\u62c9\u5217\u8868\u754c\u9762\uff09<\/div>\n
\n
<html>
\n<head>
\n<title>\u7701\u5e02\u8054\u52a8<\/title>
\n<meta content=”text\/html; charset=UTF-8″ http-equiv=”content-type” \/>
\n<script type=”text\/javascript”>
\nvar xmlhttp;<\/p>\n

function (id) {
\nreturn document.getElementById(id);
\n}<\/p>\n

\/\/\u521b\u5efaajax\u5f15\u64ce
\nfunction getXMLHttpRequest() {
\nvar xmlhttp;
\ntry {
\n\/\/Firefox,Opera 8.0+, Safari
\nxmlhttp = new XMLHttpRequest();
\n\/\/alert(“Firefox,Opera 8.0+, Safari”);
\n}catch (e) {
\n\/\/Internet Explorer
\ntry {
\n\/\/Internet Explorer 6.0+
\nxmlhttp = new ActiveXObject(“Msxml12.XMLHTTP”);
\n\/\/alert(“Internet Explorer 6.0+”);
\n}catch (e) {
\ntry {
\n\/\/Internet Explorer 5.5+
\nxmlhttp = new ActiveXObject(“Microsoft.XMLHTTP”);
\n\/\/alert(“Internet Explorer 5.5+”);
\n}catch (e) {
\nalert(“\u60a8\u7684\u6d4f\u89c8\u5668\u4e0d\u652f\u6301AJAX\uff01”);
\nreturn false;
\n}
\n}
\n}
\nreturn xmlhttp;
\n}<\/p>\n

function getCity() {
\nvar url = “\/ajax\/provinces\/provinces.php”;
\nvar data = “province=”+<\/span>(“province”).value;
\nxmlhttp = getXMLHttpRequest(); \/\/ \u83b7\u53d6\u5bf9\u8c61
\nxmlhttp.open(“POST”, url, true);\/\/ \u6253\u5f00\u8bf7\u6c42
\nxmlhttp.setRequestHeader(“Content-Type”, “application\/x-www-form-urlencoded”);\/\/\u8bbe\u7f6e\u62a5\u6587\u5934\u90e8
\nxmlhttp.onreadystatechange = chuliCity;\/\/ \u8bbe\u7f6e\u56de\u8c03\u51fd\u6570
\nxmlhttp.send(data); \/\/\u53d1\u9001\u6570\u636e
\n}<\/p>\n

function chuliCity() {
\nif (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
\n\/\/\u670d\u52a1\u5668\u5904\u7406\u5b8c\u6210\u5e76\u4e14\u6210\u529f
\n\/\/\u5220\u9664select\u4e2d\u6240\u6709\u7684\u9879
\n(‘city’).options.length = 0;
\n\/\/\u6dfb\u52a0\u9ed8\u8ba4\u9879
\n\/\/var defaultoption = document.createElement(“option”);
\n\/\/defaultoption.value = “”;
\n\/\/defaultoption.innerText = “—\u5e02—“;
\n\/\/<\/span>(‘city’).appendChild(defaultoption);
\nvar cities = xmlhttp.responseXML.getElementsByTagName(“city”);
\nfor (var i = 0; i < cities.length; i++) {
\nvar city = cities[i].childNodes[0].nodeValue;
\n\/\/\u521b\u5efaoption\u7ed3\u70b9
\nvar myoption = document.createElement(“option”);
\nmyoption.value = city;
\nmyoption.innerText = city;
\n\/\/\u6dfb\u52a0option\u7ed3\u70b9
\n$(‘city’).appendChild(myoption);
\n}
\n}
\n}<\/p>\n

<\/script>
\n<\/head>
\n<body>
\n<select id=”province” onchange=”getCity();”>
\n<option value=””>—\u7701—<\/option>
\n<option value=”sichuan”>\u56db\u5ddd<\/option>
\n<option value=”gansu”>\u7518\u8083<\/option>
\n<\/select>
\n<select id=”city” onchange=”getCountry();”>
\n<option value=””>—\u5e02—<\/option>
\n<\/select>
\n<select id=”country”>
\n<option value=””>—\u53bf—<\/option>
\n<\/select>
\n<\/body>
\n<\/html><\/p><\/div>\n<\/blockquote>\n

provinces.php\uff08\u4fe1\u606f\u5904\u7406\u9875\u9762\uff09<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader(“Content-Type:text\/xml;charset=utf-8”);
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader(“Cache-Control:no-cache”);<\/p>\n

\/\/\u63a5\u6536\u5ba2\u6237\u7aef\u6570\u636e
\nprovince =<\/span>_POST[‘province’];
\ninfo=””;
\nif (<\/span>province == “sichuan”) {
\ninfo=”<province><city>\u6210\u90fd<\/city><city>\u5e7f\u5143<\/city><city>\u7ef5\u9633<\/city><\/province>”;
\n}elseif (<\/span>province == “gansu”) {
\ninfo=”<province><city>\u5170\u5dde<\/city><city>\u6b66\u5a01<\/city><city>\u9152\u6cc9<\/city><\/province>”;
\n}else {<\/span>info=”<province><city>—\u5e02—<\/city><\/province>”;
\n}<\/p>\n

echo $info;
\n?><\/p><\/div>\n<\/blockquote>\n

\n
2.4\u8fd4\u56deJSON\u6570\u636e\u683c\u5f0f\uff08\u524d\u53f0\u7528JQuery\u7684load\u65b9\u5f0f\u63d0\u4ea4\uff09<\/div>\n
index.php\uff08\u4e0b\u62c9\u5217\u8868\u9875\uff09<\/div>\n
\n
<html>
\n<head>
\n<title>\u7701\u5e02\u8054\u52a8<\/title>
\n<meta content=”text\/html; charset=UTF-8″ http-equiv=”content-type” \/>
\n<script type=”text\/javascript” src=”..\/js\/jquery-1.8.3.min.js”><\/script>
\n<script type=”text\/javascript”>
\n(function (){<\/span>(‘#province’).change(function (){
\n\/\/id\u4e3aprovince\u7684\u6807\u7b7e\u7684onchange\u4e8b\u4ef6\u88ab\u89e6\u53d1
\n(‘#city’).load(“\/ajax\/provinces\/provinces.php”, {province:<\/span>(‘#province option:selected’).val()}, function(responseText, textStatus, XMLHttpRequest) {
\n\/\/\u53d1\u9001ajax\u8bf7\u6c42\u5e76\u63a5\u6536\u56de\u4f20\u503c
\nif (textStatus == “success”) {
\n\/\/\u8bf7\u6c42\u6210\u529f
\nvar msg_obj = eval(“(“+responseText+”)”);
\nfor (var i = 0; i < msg_obj.length; i++) {
\n\/\/alert(“<option value='”+msg_obj[i].city_value+”‘>”+msg_obj[i].city_name+”<\/option>”);
\nvar myoption =<\/span>(“<option value=\\””+msg_obj[i].city_value+”\\”>”+msg_obj[i].city_name+”<\/option>”);
\n(“#city”).append(<\/span>myoption);
\n}
\n}
\n});
\n});
\n});
\n<\/script>
\n<\/head>
\n<body>
\n<select id=”province”>
\n<option value=””>—\u7701—<\/option>
\n<option value=”sichuan”>\u56db\u5ddd<\/option>
\n<option value=”gansu”>\u7518\u8083<\/option>
\n<\/select>
\n<select id=”city” onchange=”getCountry();”>
\n<option value=””>—\u5e02—<\/option>
\n<\/select>
\n<select id=”country”>
\n<option value=””>—\u53bf—<\/option>
\n<\/select>
\n<\/body>
\n<\/html><\/div>\n<\/blockquote>\n
provinces.php\uff08\u4fe1\u606f\u5904\u7406\u9875\uff09<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader(“Content-Type:text\/html;charset=utf-8”);
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader(“Cache-Control:no-cache”);<\/p>\n

\/\/\u63a5\u6536\u5ba2\u6237\u7aef\u6570\u636e
\nprovince =<\/span>_POST[‘province’];
\n\/\/ echo province;<\/span>info=””;
\nif (province == “sichuan”) {<\/span>info='[{“city_value”:”chengdu”,”city_name”:”\u6210\u90fd”},{“city_value”:”guangyuan”,”city_name”:”\u5e7f\u5143”},{“city_value”:”mianyang”,”city_name”:”\u7ef5\u9633”}]’;
\n}elseif (province == “gansu”) {<\/span>info='[{“city_value”:”lanzhou”,”city_name”:”\u5170\u5dde”},{“city_value”:”wuwei”,”city_name”:”\u6b66\u5a01”},{“city_value”:”jiuquan”,”city_name”:”\u9152\u6cc9”}]’;
\n}else {
\ninfo='[{“city_value”:””,”city_name”:”—\u5e02—“}]’;
\n}<\/p>\n

echo<\/span>info;
\n?><\/div>\n<\/blockquote>\n

\n
2.5\u8fd4\u56deXML\u6570\u636e\u683c\u5f0f\uff08\u524d\u53f0\u7528JQuery\u7684$.get()\u65b9\u5f0f\u63d0\u4ea4\uff09<\/div>\n
index.php<\/div>\n
\n
<html>
\n<head>
\n<title>\u7701\u5e02\u8054\u52a8<\/title>
\n<meta content=”text\/html; charset=UTF-8″ http-equiv=”content-type” \/>
\n<script type=”text\/javascript” src=”..\/js\/jquery-1.8.3.min.js”><\/script>
\n<script type=”text\/javascript”>
\n(function (){<\/span>(‘#province’).change(function (){
\n\/\/id\u4e3aprovince\u7684\u6807\u7b7e\u7684onchange\u4e8b\u4ef6\u88ab\u89e6\u53d1
\n.get(“\/ajax\/provinces\/provinces.php”, {province:<\/span>(“#province option:selected”).val()}, function (data, textStatus) {
\n(“#city”).empty();<\/span>(data).find(“city”).each(function() {
\nvar myoption =<\/span>(“<option value\\””+(this).attr(“name”)+”\\”>”+<\/span>(this).text()+”<\/option>”);
\n(“#city”).append(<\/span>myoption);
\n});
\n});
\n});
\n});
\n<\/script>
\n<\/head>
\n<body>
\n<select id=”province”>
\n<option value=””>—\u7701—<\/option>
\n<option value=”sichuan”>\u56db\u5ddd<\/option>
\n<option value=”gansu”>\u7518\u8083<\/option>
\n<\/select>
\n<select id=”city” onchange=”getCountry();”>
\n<option value=””>—\u5e02—<\/option>
\n<\/select>
\n<select id=”country”>
\n<option value=””>—\u53bf—<\/option>
\n<\/select>
\n<\/body>
\n<\/html><\/div>\n<\/blockquote>\n
provinces.php<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader(“Content-Type:text\/xml;charset=utf-8”);
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader(“Cache-Control:no-cache”);<\/p>\n

\/\/\u63a5\u6536\u5ba2\u6237\u7aef\u6570\u636e
\nprovince =<\/span>_GET[‘province’];
\n\/\/ echo province;<\/span>info=””;
\nif (province == “sichuan”) {
\n\/\/<\/span>info='[{“city_value”:”chengdu”,”city_name”:”\u6210\u90fd”},{“city_value”:”guangyuan”,”city_name”:”\u5e7f\u5143”},{“city_value”:”mianyang”,”city_name”:”\u7ef5\u9633”}]’;
\ninfo = “<province><city name=’chengdu’>\u6210\u90fd<\/city><city name=’guangyuan’>\u5e7f\u5143<\/city><city name=’mianyang’>\u7ef5\u9633<\/city><\/province>”;
\n}elseif (<\/span>province == “gansu”) {
\n\/\/info='[{“city_value”:”lanzhou”,”city_name”:”\u5170\u5dde”},{“city_value”:”wuwei”,”city_name”:”\u6b66\u5a01”},{“city_value”:”jiuquan”,”city_name”:”\u9152\u6cc9”}]’;<\/span>info = “<province><city name=’lanzhou’>\u5170\u5dde<\/city><city name=’wuwei’>\u6b66\u5a01<\/city><city name=’jiuquan’>\u9152\u6cc9<\/city><\/province>”;
\n}else {
\n\/\/info='[{“city_value”:””,”city_name”:”—\u5e02—“}]’;<\/span>info = “<province><city name=”>—\u5e02—<\/city><\/province>”;
\n}<\/p>\n

echo $info;
\n?><\/p><\/div>\n<\/blockquote>\n

\n
2.6\u8fd4JSON\u6570\u636e\u683c\u5f0f\uff08\u524d\u53f0\u7528JQuery\u7684$.post()\u65b9\u5f0f\u63d0\u4ea4\uff09<\/div>\n
index.php<\/div>\n
\n
<html>
\n<head>
\n<title>\u7701\u5e02\u8054\u52a8<\/title>
\n<meta content=”text\/html; charset=UTF-8″ http-equiv=”content-type” \/>
\n<script type=”text\/javascript” src=”..\/js\/jquery-1.8.3.min.js”><\/script>
\n<script type=”text\/javascript”>
\n(function (){<\/span>(‘#province’).change(function (){
\n\/\/id\u4e3aprovince\u7684\u6807\u7b7e\u7684onchange\u4e8b\u4ef6\u88ab\u89e6\u53d1
\n.post(“\/ajax\/provinces\/provinces.php”, {province:<\/span>(“#province option:selected”).val()}, function (data, textStatus) {
\n(“#city”).empty();
\nfor (var i = 0; imyoption = (“<option value='”+data[i].city_value+”‘>”+data[i].city_name+”<\/option>”);<\/span>(“#city”).append($myoption);
\n}
\n}, “json”);
\n});
\n});
\n<\/script>
\n<\/head>
\n<body>
\n<select id=”province”>
\n<option value=””>—\u7701—<\/option>
\n<option value=”sichuan”>\u56db\u5ddd<\/option>
\n<option value=”gansu”>\u7518\u8083<\/option>
\n<\/select>
\n<select id=”city” onchange=”getCountry();”>
\n<option value=””>—\u5e02—<\/option>
\n<\/select>
\n<select id=”country”>
\n<option value=””>—\u53bf—<\/option>
\n<\/select>
\n<\/body>
\n<\/html><\/div>\n<\/blockquote>\n
provinces.php<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader ( “Content-Type:text\/html;charset=utf-8” );
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader ( “Cache-Control:no-cache” );<\/p>\n

\/\/\u63a5\u6536\u5ba2\u6237\u7aef\u6570\u636e
\nprovince =<\/span>_REQUEST [‘province’];
\n\/\/ echo province;<\/span>info = “”;
\nif (province == “sichuan”) {<\/span>info='[{“city_value”:”chengdu”,”city_name”:”\u6210\u90fd”},{“city_value”:”guangyuan”,”city_name”:”\u5e7f\u5143”},{“city_value”:”mianyang”,”city_name”:”\u7ef5\u9633”}]’;
\n\/\/ info = “<province><city name=’chengdu’>\u6210\u90fd<\/city><city name=’guangyuan’>\u5e7f\u5143<\/city><city name=’mianyang’>\u7ef5\u9633<\/city><\/province>”;
\n} elseif (<\/span>province == “gansu”) {
\ninfo='[{“city_value”:”lanzhou”,”city_name”:”\u5170\u5dde”},{“city_value”:”wuwei”,”city_name”:”\u6b66\u5a01”},{“city_value”:”jiuquan”,”city_name”:”\u9152\u6cc9”}]’;
\n\/\/<\/span>info = “<province><city name=’lanzhou’>\u5170\u5dde<\/city><city name=’wuwei’>\u6b66\u5a01<\/city><city name=’jiuquan’>\u9152\u6cc9<\/city><\/province>”;
\n} else {
\ninfo='[{“city_value”:””,”city_name”:”—\u5e02—“}]’;
\n\/\/<\/span>info = “<province><city name=”>—\u5e02—<\/city><\/province>”;
\n}<\/p>\n

echo $info;
\n?><\/p><\/div>\n<\/blockquote>\n<\/div>\n

\n
3\u3001\u5929\u6c14\u9884\u62a5\u67e5\u8be2<\/div>\n
3.1\u4f7f\u7528\u4e2d\u56fd\u56fd\u5bb6\u6c14\u8c61\u5c40\u5929\u6c14\u9884\u62a5\u4fe1\u606f\u63a5\u53e3\u67e5\u8be2\u5168\u56fd\u5404\u5730\u7684\u5929\u6c14\u60c5\u51b5<\/div>\n
3.2\u4f7f\u7528ajax\u65b9\u5f0f\u52a8\u6001\u52a0\u8f7d\u7701\u5e02\u4fe1\u606f\uff0c\u5f02\u6b65\u65e0\u5237\u65b0\u67e5\u8be2\u5929\u6c14\u9884\u62a5<\/div>\n
3.3\u4f7f\u7528php\u53d1\u9001\u8de8\u57df\u8bf7\u6c42\uff0c\u83b7\u53d6\u56fd\u5bb6\u6c14\u8c61\u5c40\u4fe1\u606f\u63a5\u53e3\u8fd4\u56de\u7684json\u4fe1\u606f\uff0c\u5e76\u5c06\u5176\u505a\u4e3aajax\u8bf7\u6c42\u54cd\u5e94\u62a5\u6587\u8fd4\u56de\u7ed9\u524d\u53f0\u9875\u9762<\/div>\n
3.4\u6e90\u4ee3\u7801<\/div>\n
index.php\uff08\u4fe1\u606f\u5c55\u793a\u9875\uff09<\/div>\n
\n
<!DOCTYPE unspecified PUBLIC “-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN” “http:\/\/www.w3.org\/TR\/html4\/loose.dtd”>
\n<html>
\n<head>
\n<title>\u5929\u6c14\u9884\u62a5\u67e5\u8be2<\/title>
\n<meta content=”text\/html; charset=utf-8″>
\n<script type=”text\/javascript” src=”..\/js\/jquery-1.8.3.min.js”><\/script>
\n<script type=”text\/javascript” src=”weather_forecast.js”><\/script>
\n<style type=”text\/css”>
\ntable.weather {
\ntable-layout: fixed;
\ntext-align: center;
\n}<\/p>\n

table.index {
\nwidth: 580px;
\n}<\/p>\n

body {
\nfont-family: \u4eff\u5b8b;
\n}<\/p>\n

select {
\nwidth: 80px;
\n}
\n<\/style>
\n<\/head>
\n<body>
\n<center>
\n<select id=”province”>
\n<option value=””>—\u7701—<\/option>
\n<?php
\n\/\/\u6253\u5f00\u6570\u636e\u5e93
\nconnect = mysql_connect ( “localhost”, “root”, “” );
\nmysql_select_db ( “weather_forecast” );
\nmysql_query ( “set names utf8” );
\n\/\/\u67e5\u8be2\u7701\u4efd\u6570\u636e<\/span>sql = “select * from `province`”;
\nresult = mysql_query (<\/span>sql );
\nif (result && mysql_num_rows (<\/span>result ) > 0) {
\n\/\/\u5982\u679c\u6570\u636e\u4e0d\u4e3a\u7a7a\uff0c\u5219\u9010\u6761\u89e3\u6790\u5e76\u52a0\u5165\u4e0b\u62c9\u5217\u8868
\nwhile ( arr = mysql_fetch_array (<\/span>result ) ) {
\necho “<option value='” . arr [“id”] . “‘>” .<\/span>arr [“name”] . “<\/option>”;
\n}
\n}
\nmysql_close ( $connect );
\n?>
\n<\/select> <select id=”city”>
\n<option value=””>—\u5e02—<\/option>
\n<\/select>
\n<button id=”commit”>\u67e5\u8be2<\/button>
\n<hr \/>
\n<div id=”weather”><\/div>
\n<\/center>
\n<\/body>
\n<\/html><\/div>\n<\/blockquote>\n

city.php\uff08\u83b7\u53d6\u57ce\u5e02\u4fe1\u606f\u9875\uff09<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader ( “Content-Type:text\/html;charset=utf-8” );
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader ( “Cache-Control:no-cache” );<\/p>\n

\/\/\u63a5\u6536\u7701\u4efd\u6570\u636e
\nprovince_id =<\/span>_POST [‘province’];<\/p>\n

\/\/\u6253\u5f00\u6570\u636e\u5e93
\nconnect = mysql_connect ( “localhost”, “root”, “” );
\nmysql_select_db ( “weather_forecast” );
\nmysql_query ( “set names utf8” );
\n\/\/\u67e5\u8be2\u6570\u636e<\/span>sql = “select `name`, `city_number` from `city` where `province_id` = ‘” . province_id . “‘”;<\/span>result = mysql_query ( sql );<\/span>info = “”;
\nif (mysql_num_rows ( result )>0) {<\/span>info = “[“;
\nwhile ( array = mysql_fetch_array (<\/span>result ) ) {
\ninfo =<\/span>info.'{“name”:”‘.array[“name”].'”,”city_number”:”‘.<\/span>array[“city_number”].'”},’;
\n}
\ninfo = substr(<\/span>info, 0, strlen(info)-1);<\/span>info .= “]”;
\n}
\necho $info;
\n?><\/div>\n<\/blockquote>\n

forecast.php\uff08\u8bf7\u6c42\u8de8\u57df\u5730\u5740\u8bbf\u95ee\u9875\uff09<\/div>\n
\n
<?php
\n\/\/\u63a5\u53d7\u57ce\u5e02\u4ee3\u7801
\ncity_number =<\/span>_POST[‘city_number’];<\/p>\n

\/\/\u521d\u59cb\u5316
\nch = curl_init();<\/p>\n

curl_setopt(<\/span>ch, CURLOPT_URL, “http:\/\/m.weather.com.cn\/data\/”.city_number.”.html”);
\ncurl_setopt(<\/span>ch, CURLOPT_RETURNTRANSFER, 1);
\ncurl_setopt(ch, CURLOPT_HEADER, 0);
\n\/\/ 3. \u6267\u884c\u5e76\u83b7\u53d6HTML\u6587\u6863\u5185\u5bb9<\/span>output = curl_exec(ch);
\n\/\/ 4. \u91ca\u653ecurl\u53e5\u67c4
\ncurl_close(<\/span>ch);<\/p>\n

echo $output;
\n?><\/p><\/div>\n<\/blockquote>\n

weather_forecast.js\uff08ajax\u8bf7\u6c42\u811a\u672c\uff09<\/div>\n
\n
$(function() {
\n$(“#province”).change(
\nfunction() {
\n$.ajax({
\nurl : “\/ajax\/weather_forecast\/city.php”,
\ntype : “POST”,
\ndata : {
\nprovince : $(“#province option:selected”).val()
\n},
\ndataType : “json”,
\nsuccess : function(data) {
\nif (data == null || data == “”) {
\n$(“#city”).empty();
\n$myoption = $(“<option value=”>—\u5e02—<\/option>”);
\n$(“#city”).append($myoption);
\nreturn;
\n}
\n$(“#city”).empty();
\nfor ( var i = 0; i < data.length; i++) {
\n$myoption = $(“<option value='”
\n+ data[i].city_number + “‘>” + data[i].name
\n+ “<\/option>”);
\n$(“#city”).append($myoption);
\n}
\n}
\n});
\n});<\/p>\n

$(“button”).click(
\nfunction() {
\nif ($(“#city”).val() == null || $(“#city”).val() == “”) {
\nwindow.alert(“\u8bf7\u9009\u62e9\u6b63\u786e\u7701\u4efd\u548c\u57ce\u5e02”);
\nreturn;
\n}
\n$.ajax({
\nurl: “\/ajax\/weather_forecast\/forecast.php”,
\ntype: “POST”,
\ndata: {city_number:$(“#city”).val()},
\ndataType: “json”,
\nsuccess: function (data){
\nvar info = data.weatherinfo;
\nvar $table = “<table class=’weather’ border=’1′><tr><th><\/th><th>\u4eca\u5929<\/th><th>\u660e\u5929<\/th><th>\u540e\u5929<\/th><\/tr>”;
\n$table += “<tr><th>\u6e29\u5ea6<\/th><td>”+info.temp1+”<\/td><td>”+info.temp2+”<\/td><td>”+info.temp3+”<\/td><\/tr>”;
\n$table += “<tr><th>\u5929\u6c14<\/th><td>”+info.weather1+”<\/td><td>”+info.weather2+”<\/td><td>”+info.weather3+”<\/td><\/tr>”;
\n$table += “<tr><th>\u98ce\u901f<\/th><td>”+info.wind1+”<\/td><td>”+info.wind2+”<\/td><td>”+info.wind3+”<\/td><\/tr>”;
\n$table += “<tr><th>\u98ce\u901f\u7ea7\u522b<\/th><td>”+info.fl1+”<\/td><td>”+info.fl2+”<\/td><td>”+info.fl3+”<\/td><\/tr>”;
\n$table += “<\/table><br \/>”;
\n$table += “<table class=’index’ border=’1′><tr><th colspan=’3′>\u8be6\u7ec6\u60c5\u51b5<\/th><\/tr>”;
\n$table += “<tr><th width=’20%’>\u4eca\u5929\u7a7f\u8863\u6307\u6570<\/th><td width=’10%’>”+info.index+”<\/td><td width=’70%’>”+info.index_d+”<\/td><\/tr>”;
\n$table += “<tr><th>48\u5c0f\u65f6\u7a7f\u8863\u6307\u6570<\/th><td>”+info.index48+”<\/td><td>”+info.index48_d+”<\/td><\/tr>”;
\n$table += “<tr><th>\u7d2b\u5916\u7ebf\u53ca48\u5c0f\u65f6\u7d2b\u5916\u7ebf<\/th><td>”+info.index_uv+”<\/td><td>”+info.index48_uv+”<\/td><\/tr>”;
\n$table += “<tr><th>\u6d17\u8f66<\/th><td colspan=’2′>”+info.index_xc+”<\/td><\/tr>”;
\n$table += “<tr><th>\u5916\u51fa\u65c5\u6e38<\/th><td colspan=’2′>”+info.index_tr+”<\/td><\/tr>”;
\n$table += “<tr><th>\u8212\u9002\u6307\u6570<\/th><td colspan=’2′>”+info.index_co+”<\/td><\/tr>”;
\n$table += “<tr><th>\u6668\u7ec3<\/th><td colspan=’2′>”+info.index_cl+”<\/td><\/tr>”;
\n$table += “<tr><th>\u667e\u6652<\/th><td colspan=’2′>”+info.index_ls+”<\/td><\/tr>”;
\n$table += “<tr><th>\u8fc7\u654f<\/th><td colspan=’2′>”+info.index_ag+”<\/td><\/tr>”;
\n$table += “<\/table>”;
\n$(“#weather”).html($table);
\n}
\n});
\n});
\n});<\/p><\/div>\n<\/blockquote>\n<\/div>\n<\/div>\n

\n
4\u3001\u9ec4\u91d1\u4ef7\u683c\u5b9e\u65f6\u76d1\u63a7<\/div>\n
4.1\u9700\u8981\u4e24\u4e2a\u9875\u9762\uff0c\u4e00\u4e2a\u662f\u5c55\u793a\u9875\u9762\uff0c\u53e6\u4e00\u4e2a\u662f\u6570\u636e\u66f4\u65b0\u9875\u9762<\/div>\n
4.2\u9700\u8981\u6839\u636e\u4e0a\u6b21\u7684\u6570\u636e\u548c\u672c\u6b21\u7684\u6570\u636e\u7b97\u51fa\u6da8\u8dcc\u5e76\u52a8\u6001\u52a0\u8f7d\u76f8\u5e94\u7684\u56fe\u7247\u8d44\u6e90<\/div>\n
4.3\u8bbe\u7f6e\u4e24\u4e2a\u8ba1\u65f6\u5668\uff0c\u4e00\u4e2a\u8d1f\u8d23\u53d1\u9001ajax\u8bf7\u6c42\uff0c\u53e6\u4e00\u4e2a\u8d1f\u8d23\u5012\u8ba1\u65f6<\/div>\n
4.4\u6e90\u4ee3\u7801<\/div>\n
index.html<\/div>\n
\n
<!DOCTYPE html PUBLIC “-\/\/W3C\/\/DTD HTML 4.01 Strict\/\/EN” “http:\/\/www.w3.org\/TR\/html4\/strict.dtd”>
\n<html>
\n<head>
\n<meta http-equiv=”Content-Type” content=”text\/html; charset=UTF-8″>
\n<title>\u9ec4\u91d1\u4ef7\u683c\u8d70\u52bf<\/title>
\n<script type=”text\/javascript” src=”..\/js\/jquery-1.8.3.min.js”><\/script>
\n<script type=”text\/javascript” src=”gold_price.js”><\/script>
\n<\/head>
\n<body>
\n<div align=”center”>
\n<h1>\u9ec4\u91d1\u4ef7\u683c\u8d70\u52bf<\/h1>
\n<h3>\u6bcf\u96945\u79d2\u5237\u65b0\u9875\u9762\uff0c\u8ddd\u4e0b\u6b21\u5237\u65b0\u8fd8\u6709<font id=”sec”>5<\/font>\u79d2<\/h3>
\n<table align=”center” width=”300px”>
\n<tr><td width=”30%”>\u5e02\u573a<\/td><td width=”30%”>\u6700\u65b0\u4ef7\u683c<\/td><td width=”40%”>\u6da8\u8dcc<\/td><\/tr>
\n<tr id=”ld”><td width=”30%”>\u4f26\u6566<\/td><td width=”30%”>0<\/td><td width=”40%”>0<\/td><\/tr>
\n<tr id=”tw”><td width=”30%”>\u53f0\u6e7e<\/td><td width=”30%”>0<\/td><td width=”40%”>0<\/td><\/tr>
\n<tr id=”dj”><td width=”30%”>\u4e1c\u4eac<\/td><td width=”30%”>0<\/td><td width=”40%”>0<\/td><\/tr>
\n<\/table>
\n<\/div>
\n<\/body>
\n<\/html><\/div>\n<\/blockquote>\n
gold_price.js<\/div>\n
\n
$(function (){
\nrun();
\n\/\/\u5f00\u542f\u5b9a\u65f6\u5668
\nvar interval = null;
\nvar interval2 = null;
\nfunction run() {
\nif (interval == null) {
\n\/\/\u8bbe\u7f6e\u5b9a\u65f6\u5668\uff0c\u6bcf5\u79d2\u949f\u6267\u884cgetPrice\u51fd\u6570\u4e00\u6b21
\ninterval = setInterval(getPrice, “5000”);
\n}
\nif (interval2 == null) {
\ninterval2 = setInterval(jishi, “1000”);
\n}
\n}
\n\/\/\u505c\u6b62\u5b9a\u65f6\u5668
\nfunction stop() {
\nif (interval != null)
\nclearTimeout(interval);
\n}
\n\/\/\u53d1\u9001ajax\u8bf7\u6c42
\nfunction getPrice() {
\n$.ajax({
\nurl: “\/ajax\/gold_price\/price.php”,
\ntype: “POST”,
\ndata: {ld: $(“#ld td:eq(1)”).text(), tw: $(“#tw td:eq(1)”).text(), dj: $(“#dj td:eq(1)”).text()},
\ndataType: “json”,
\nsuccess: function(data) {
\n\/\/\u4f26\u6566
\n$(“#ld > td:eq(1)”).text(data.ld.price);
\nvar $value = “0”;
\nif (parseInt(data.ld.price_change) == 0) {
\n$value = “0”;
\n}else if (parseInt(data.ld.price_change) > 0) {
\n$value = “<img src=’up.png’ alt=’rise’>”+data.ld.price_change;
\n}else {
\n$value = “<img src=’down.png’ alt=’fall’>”+data.ld.price_change.substring(1);
\n}
\n$(“#ld > td:eq(2)”).html($value);
\n\/\/\u53f0\u6e7e
\n$(“#tw > td:eq(1)”).text(data.tw.price);
\nvar $value = “0”;
\nif (parseInt(data.tw.price_change) == 0) {
\n$value = “0”;
\n}else if (parseInt(data.tw.price_change) > 0) {
\n$value = “<img src=’up.png’ alt=’rise’>”+data.tw.price_change;
\n}else {
\n$value = “<img src=’down.png’ alt=’fall’>”+data.tw.price_change.substring(1);
\n}
\n$(“#tw > td:eq(2)”).html($value);
\n\/\/\u4e1c\u4eac
\n$(“#dj > td:eq(1)”).text(data.dj.price);
\nvar $value = “0”;
\nif (parseInt(data.dj.price_change) == 0) {
\n$value = “0”;
\n}else if (parseInt(data.dj.price_change) > 0) {
\n$value = “<img src=’up.png’ alt=’rise’>”+data.dj.price_change;
\n}else {
\n$value = “<img src=’down.png’ alt=’fall’>”+data.dj.price_change.substring(1);
\n}
\n$(“#dj > td:eq(2)”).html($value);
\n}
\n});
\n}<\/p>\n

function jishi() {
\nvar t = parseInt($(“#sec”).text());
\nif (t > 1) {
\n$(“#sec”).text(–t);
\n}else {
\n$(“#sec”).text(“0”);
\n$(“#sec”).text(“5”);
\n}
\n}
\n});<\/p><\/div>\n<\/blockquote>\n

price.php<\/div>\n<\/div>\n
\n
<?php
\n\/\/\u8bbe\u7f6e\u8fd4\u56de\u7684\u683c\u5f0f
\nheader ( “Content-Type:text\/html;charset=utf-8” );
\n\/\/\u8bbe\u7f6e\u7981\u7528\u7f13\u5b58
\nheader ( “Cache-Control:no-cache” );
\n\/\/\u63a5\u6536\u6570\u636e
\nld_old =<\/span>_POST[‘ld’];
\ntw_old =<\/span>_POST[‘tw’];
\ndj_old =<\/span>_POST[‘dj’];
\n\/\/\u751f\u6210\u4e09\u4e2a\u52a8\u6001\u6570\u636e
\nld = rand(500, 1500);<\/span>tw = rand(500, 1500);
\ndj = rand(500, 1500);
\n\/\/\u8ba1\u7b97\u6da8\u8dcc\uff0c\u53d1\u9001\u7ed3\u679c<\/span>info = ‘{“ld”:{“price”:”‘.ld.'”,”price_change”:”‘.(<\/span>ld-ld_old).'”},’;<\/span>info .= ‘”tw”:{“price”:”‘.tw.'”,”price_change”:”‘.(<\/span>tw-tw_old).'”},’;<\/span>info .= ‘”dj”:{“price”:”‘.dj.'”,”price_change”:”‘.(<\/span>dj-dj_old).'”}}’;
\n\/\/\u5199\u4f1a\u6570\u636e
\necho<\/span>info;<\/div>\n<\/blockquote>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n \n \n ","protected":false},"excerpt":{"rendered":"

\u8fd9\u662f\u672c\u4eba\u5728\u5b66\u4e60ajax\u8fc7\u7a0b\u6240\u505a\u7684\u7b14\u8bb0\uff0c\u901a\u8fc7\u672c\u7b14\u8bb0\u7684\u5b66\u4e60\uff0c\u53ef\u4ee5\u5b8c\u6210ajax\u7684\u5feb\u901f\u5165\u95e8\u3002\u672c\u7b14\u8bb0\u524d\u7aef\u5206\u522b\u4f7f\u7528\u539f\u751f\u6001\u7684…Continue reading \u57fa\u4e8ePHP\u7684AJAX\u5b66\u4e60\u7b14\u8bb0\uff08\u6559\u7a0b\uff09<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[14,15,16,6],"class_list":["post-107","post","type-post","status-publish","format-standard","hentry","category-3","tag-ajax","tag-javascript","tag-jquery","tag-php"],"_links":{"self":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts\/107"}],"collection":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=107"}],"version-history":[{"count":1,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts\/107\/revisions"}],"predecessor-version":[{"id":108,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=\/wp\/v2\/posts\/107\/revisions\/108"}],"wp:attachment":[{"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.softeng.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}