iframe式ajax调用示例

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1.新建 a.html
复制代码 代码如下:

<!doctype html>
<html>
<head>
<meta charset='utf-8'>
<title>iframe式ajax调用</title>
</head>
<body>
<form action='b.php' method='post' name='' id='' target='formTarget'>
<input type='text' name='username' id='' placeholder='' value='' />
<input type='submit' name='' value='提交' />
<span id='msg'></span>
</form>
<iframe src='' name='formTarget' id='formTarget' style='display:none'></iframe>
</body>
</html>

2.新建 b.php
复制代码 代码如下:

<?php
echo "
<script>
parent.document.getElementById('msg').innerHTML = 'iframe式ajax调用成功!';
alert('您输入的是:{$_POST['username']}');
window.setTimeout(function(){
parent.window.location.reload();
},3000);
</script>
";

3.访问: http://localhost/a.html

效果如图