原标题：成都汇智动力-java ajax实现异步同步请求全面详解

对象 var request=new ()

//兼容IE5 IE6

if (window.)

{// code for IE7+, Firefox, Chrome, Opera, Safari

xmlhttp=new ();

}

else

{// 老版本的 IE6, IE5 使用 ActiveX 对象

xmlhttp=new ActiveXObject(“Microsoft.XMLHTTP”);

}

var request=new () //创建对象

if (xmlhttp.readyState==4 && xmlhttp.status==200)

{

//做一些事情

request.responseText

}

success(data, textStatus, jqXHR)

data:处理后的数据, textStatus:描述状态的字符串,jqXHR(在jQuery 1.4.x的中，) 对象

data:$(“#表单名”).serializeArray() serializeArray() 方法通过序列化表单值来创建对象数组(名称和值)。

onreadystatechange 是一个事件句柄。它的值 (state_Change) 是一个函数的名称，

当 对象的状态发生改变时，会触发此函数。状态从 0 (uninitialized)

到 4 (complete) 进行变化。仅在状态为 4 时，我们才执行代码。

为什么使用 Async=true ？

我们的实例在 open() 的第三个参数中使用了 “true”。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"brush:java;"> <> document.getElementById("search").onclick = function() { var request = new (); request.open("GET", "ygc.php?number=" + document.getElementById("keyword").value); request.send(); request.onreadystatechange = function() { if (request.readyState===4) { if (request.status===200) { document.getElementById("searchResult").innerHTML = request.responseText; } else { alert("发生错误：" + request.status); } } } } document.getElementById("save").onclick = function() { var request = new (); request.open("POST", "ygc.php"); var data = "name=" + document.getElementById("staffName").value + "&number=" + document.getElementById("staffNumber").value + "&sex=" + document.getElementById("staffSex").value + "&job=" + document.getElementById("staffJob").value; request.setRequestHeader("Content-type","application/x-www-form-urlencoded"); request.send(data); request.onreadystatechange = function() { if (request.readyState===4) { if (request.status===200) { document.getElementById("createResult").innerHTML = request.responseText; } else { alert("发生错误：" + request.status); } } } } >返回搜狐，查看更多

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