<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>jq-1</title>
<style>
#info{ border: 1px solid red; width: 100px;}
</style>
<script src="http://www.w3school.com.cn/jquery/jquery.js"></script>
<script>
$(function (){
//alert($("#info").html());
$("#info").click(function (){
$.ajax({
url:"./ajax1.txt", //url请求的地址
beforeSend:beforeSend2, //发送之前执行的操作
error:error2, //发生错误时候执行
success:success2, //成功时执行
datatype: 'text' //接受从服务器返回的数据类型 xml、html、script、json、jsonp、text.
});
});
function beforeSend2(){
alert("这里是beforeSend");
}
function error2(){
alert("出错的error在这里");
}
function success2(data){
alert(data);
$("#info2").html(data);
}
});
</script>
</head>
<body>
<div id="info">info</div>
<div id="info2"></div>
</body>
</html>
- dataType的类型
- ajax是向服务器请求数据
- No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 跨域
