index.php
<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<title>加载超时</title>
<script type="text/javascript" src="http://lib.sinaapp.com/js/jquery/1.7/jquery.min.js"></script>
</head>
<body>
<script type="text/javascript">
function load(){
$("#tips").html("加载中...");
$.ajax({
async:true,
cache:false,
timeout:8000,
type:"POST",
url:"result.php",
data:{a:'123'},
error:function(jqXHR, textStatus, errorThrown){
if(textStatus=="timeout"){
$("#tips").html("加载超时，请重试");
}else{
alert(textStatus);
}
},
success:function(msg){
$("#tips").html(msg);
}
});
}
</script>
<input type="button" id="load" onclick="load();" value="点击加载"/>
<div id="tips"></div>
</body>
<html>
result.php
<?php
//sleep(20);
sleep(2);
echo $_POST['a'].'test服务器返回结果';