这是之前js的ajax的例子用jquery实现了一遍，比较一下，对两者有更深入的了解
js的实现链接
http://blog.chinaunix.net/uid-28561809-id-5673877.html
前端代码
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<!DOCTYPE html >
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<html>
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<head>
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<title>task</title>
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<script src=""></script>
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</head>
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<body>
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<p><label>用户名</label><input type="text" id="username"/></p>
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<p><label>密码</label><input type="password" id="password"/></p>
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<p><input type="submit" value="submit" class="btn"/></p>
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</body>
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</html>
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<script language="javascript" type="text/javascript">
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$(".btn").click(function(){
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console.log($("#username").val());
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$.ajax({
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type:"POST",
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url:"dologin.php",
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data:{
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username:$("#username").val(),
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password:$("#password").val()
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},
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success:function(data){
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console.log(data)
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if(data =="ok"){
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alert("true");
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}else{
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alert ("false");
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}
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}
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});
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})
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</script>
后台代码
dologin.php
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<?php
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session_start();
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if($_POST['username']&&$_POST['password']){
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$name = $_POST['username'];
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$pass = $_POST['password'];
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if($name=='ella' && $pass = 'pass'){
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echo "ok";
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}else{
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echo "error";
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}
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}else{
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echo 'error';
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exit;
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}
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?>
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