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JS

#box{

width:600px;

height:200px;

padding:20px;

border:1px solid #999;

}

ajax post方式传递参数

---

Number1:

Number2:

加载

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 = newXMLHttpRequest();

}else{

//IE 6

//var xhr = newActiveXObject('Microsoft.XMLHTTP');

var xhr = newActiveXObject('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);

}