load的方法的使用（现在已不常用）
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
<!-- 引进jQuery -->
<script src="jquery.js"></script>
<style type="text/css">
input{
margin-top: 30px;
}
div{
margin-top: 20px;
150px;
height: 60px;
border:2px solid red;
}
</style>
</head>
<body>
<input type="button" value="button-1" id="button1" />
<div id="content1"></div>
<input type="button" value="button-2" id="button2" />
<div id="content2"></div>
<input type="button" value="button-3" id="button3" />
<h2 style="display:none" id="img">加载中...</h2>
<div id="content3"></div>
<script type="text/javascript">
$('#button1').click(function () {
//Math.random()能够解决严重的缓存问题，特别对于ie
$('#content1').load('demo1.php?'+Math.random(),function(msg){
$('#content1').html(msg);
})
});
$('#button2').click(function () {
//在html中获取地址栏中传递的参数
$('#content2').load('demo2.html#one?'+Math.random(),function(msg){
$('#content2').html(msg);
})
});
$('#button3').click(function () {
//在html中获取地址栏中传递的参数
$('#content3').load('demo3.php?'+Math.random(),function(msg){
$('#content3').html(msg);
})
});
</script>
</body>
</html>
demo1.php的内容是：
<?php
echo '这是php文件返回的内容，将会返回到div里';
?>
demo2.html的内容是：
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo2</title>
</head>
<body>
<span id="one" style="color:red">我是id为one里span里的内容</span>
<span id="two" style="color:blue">我是id为two里span里的内容</span>
</body>
</html>
demo3.php的内容是：
<?php
sleep(3);//3秒后响应
echo '111';
?>
ajax----表单序列化
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
<!-- 引进jQuery -->
<script src="jquery.js"></script>
</head>
<body>
<form method="post">
a项:<input type="text" name="a" /><br/>
b项:<input type="text" name="b" /><br/>
c项:<input type="text" name="c" /><br/>
d项:<input type="text" name="d" /><br/>
e项:<input type="text" name="e" /><br/>
f项:<input type="text" name="f" /><br/>
<input type="button" id="submit" value="提交" />
</form>
<script type="text/javascript">
//表单序列化,一定要包含在form里，每个元素要有name属性
$('#submit').click(function () {
//表单序列化得到所有数据
var data = $('form').serialize();
$.ajax({
type: "POST",
url:'demo4.php',
data:data,// 要提交的表单
success: function(ms) {
alert($('form').serialize());
alert(ms);
},
error:function(jqXHR,textStatus,errorThrown){
if(errorThrown == 'Not Found'){
console.log('请求地址不存在');
}
if(textStatus == 'timeout'){
console.log('请求超时');
}
}
});
})
</script>
</body>
</html>
demo4.php的内容是：
<?php
echo $_POST['a'];
?>
ajax操作xml，json
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>demo</title>
<!-- 引进jQuery -->
<script src="jquery.js"></script>
</head>
<body>
<input type="button" value="button-5" id="button5" />
<input type="button" value="button-6" id="button6" />
<script type="text/javascript">
//ajax操作xml
$('#button5').click(function(){
$.ajax({
url:'stu.xml?'+Math.random(),
type:'get',
dataType:'xml',
success:function(xml){
$(xml).find('title').each(function(){
//操作xml文件是，html()方法不可用
alert($(this).children("li").text())
});
}
})
})
//ajax操作json,eval的妙用
$('#button6').click(function(){
$.ajax({
url:'demo6.php?'+Math.random(),
type:'get',
dataType:'json',
success:function(rs){
alert(eval(rs));//object
alert(eval(rs[0].AreaId));//123
}
})
})
</script>
</body>
</html>
stu.xml的内容是：
<?xml version="1.0" encoding="UTF-8"?>
<stu>
<title>
<li>aa</li>
</title>
<title>
<li>bb</li>
</title>
<title>
<li>cc</li>
</title>
</stu>
demo6.php的内容是：
<?php
$strJSON = '[{"AreaId":"123"},{"AreaId":"345"}]';
echo $strJSON;
?>