红炉一点雪cck
2018-10-02 19:50:35浏览 4089
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
姓名：<input type="text" name="user" id="user" value="" />
年龄：<input type="text" name="age" id="age" value="" />
<button id="btn">点击</button>
</body>
<script>
var btn=document.getElementById("btn");
btn.=function(){
var userval=document.getElementById("user").value;
var ageval=document.getElementById("age").value;
//1.创建ajax对象(此处兼容性的创建)
var xhr=null;
try{
xhr=new XMLHttpRequest();
}catch(e){
xhr=new ActiveXObject("Microsoft.XMLHTTP");
}
//2.调用open方法（true----异步）
xhr.open("post","links/2.post.php",true);
//3.发送数据
xhr.setRequestHeader('content-type','application/x-www-form-urlencoded');
xhr.send("username="+userval+"&age="+ageval+"&timp"+new Date().getTime());
//4.请求状态改变事件
xhr.onreadystatechange=function(){
if(xhr.readyState==4){
if(xhr.status==200){
document.write(xhr.responseText)
}else{
alert("错误"+xhr.status)
}
}
}
}
</script>
</html>