以下是自学it网--中级班上课笔记
网址：www.zixue.it
html页面
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
<head>
<title>利用jquery+iframe做一个ajax上传效果</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="description" content="" />
<meta name="keywords" content="" />
<script src="http://libs.baidu.com/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// 利用 jquery+iframe 做一个ajax上传效果 /*
思路:
1: 点击"提交"时的瞬间,生成一个iframe对象,插入body中
2: 修改form的target ,为iframe的name值
3: 给iframe加1个事件 ,onload
*/ $(
function() {
$('input:button').click(function(){
//alert('s');
var ifmname = 'ifm' + Math.random();
var ifm = $('<iframe width="0" height="0" frameborder="0" name="'+ ifmname +'">');
ifm.appendTo($('body')); $('form').attr('target',ifmname);
$('form').submit(); $('#progress').html('<img src="http://linux.zixue.it/images/loading.gif" border="0">');
ifm.load(function(){
$('#progress').html('上传完毕');
this.remove();
}); });
}
); </script>
<style type="text/css">
</style>
</head>
<body>
<div id="progress"></div>
<form action="upfile.php" method="post" enctype="multipart/form-data" target="upfile">
<input type="file" name="pic" /><br />
<input type="button" value="提交" />
</form>
</body>
</html>
upfile.php
echo move_uploaded_file($_FILES['pic']['tmp_name'],'./upload/' . $_FILES['pic']['name']) ? 'OK':'fail';