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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>JS</title> <style> #box{ width:600px; height:200px; padding:20px; border:1px solid #999; } </style> </head> <body> <h1>ajax post方式传递参数</h1> <hr> Number1: <input type="text" id="num1"><br> Number2: <input type="text" id="num2"><br> <button onclick="loadHtml()">加载</button> <div id="box"></div> <script> function loadHtml(){ //获取表单中的数据 var num1 = document.getElementById(‘num1‘).value; var num2 = document.getElementById(‘num2‘).value; //实例化XMLHttpRequest对象 if(window.XMLHttpRequest){ //非IE var xhr = new XMLHttpRequest(); }else{ //IE 6 //var xhr = new ActiveXObject(‘Microsoft.XMLHTTP‘); var xhr = new ActiveXObject(‘Microsoft.XMLHTTP‘); } //给xhr绑定事件.检测请求的过程 xhr.onreadystatechange = function(){ console.log(xhr.readyState); //如果成功接收到并响应 if(xhr.status == 200 && xhr.readyState == 4){ document.getElementById(‘box‘).innerHTML = xhr.responseText; } } //进行请求的初始化 xhr.open(‘post‘,‘js.php‘,true); //设置请求头 xhr.setRequestHeader(‘content-type‘,‘application/x-www-form-urlencoded‘); //正式发送请求 xhr.send(‘n1=‘+num1+‘&n2=‘+num2); } </script> </body> </html>
js.php
<?php echo $_POST[‘n1‘] + $_POST[‘n2‘]; ?>
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原文地址：http://www.cnblogs.com/shanyansheng/p/5125897.html
