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Ajax_iframe文件上传
2015-02-01 12:00
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js 无法实现
文件的上传几种伪装
前两种只是一种模拟无刷新的效果
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第一种:Iframe实现文件上传
IframeFileUp.php:
<?php if(empty($_FILES)){ ????exit(‘no?file‘); } $error?=?$_FILES[‘pic‘][‘error‘]==0??‘文件上传成功‘?:?‘文件上传失败‘; //上传成功 echo?"<script>parent.document.getElementsByTagName(‘h2‘)[0].innerHTML?=?‘$error‘</script>"; ?> |
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IframeFileUp.html:
<html> ????<head> ????????<title>iframe文件上传</title> ????????<script?type="text/javascript"?src="./jquery.min.js"></script> ????????<script?type="text/javascript"> /*分析: ??1.捕捉表单提交的动作 ??2.创建一个iframe ??3。把表单的target指向该iframe ??4.去掉这个iframe ?*/ function?ajaxup(){ ????????//创建一个iframe并追加到body下面 ????var?ifname=‘up‘+Math.random(); ????$(‘<iframe?name="‘?+ifname?+?‘"?width="0"?height="0"?frameBorder="0"?></iframe>‘).appendTo($(‘body‘)); ????????//把表单target修改指向iframe ????$(‘form:first‘).attr(‘target‘,ifname);?? ????//return?false; } ????????</script> ????????<style?type="text/css"> ????????????p{border:1px?solid?gray;}; ????????</style> ????</head> ????<body> ????????<h1>iframe模拟Ajax文件上传效果</h1> ????????<h2></h2> ????????<form?action="IframeFileUp.php"?method="post"?enctype="multipart/form-data"?onsubmit="return?ajaxup();"> ????????????<p><input?type="file"?name="pic"??/></p> ????????????<p><input?type="submit"?value="提交"/></p> ????????</form> ????</body> </html> |
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2015-02-02
//增加加载图片效果,告诉用户正在上传
修改上面的script代码,html如下
<html> ????<head> ????????<title>iframe文件上传</title> ????????<script?type="text/javascript"?src="./jquery.min.js"></script> ????????<script?type="text/javascript"> /*分析: ??1.捕捉表单提交的动作 ??2.创建一个iframe ??3。把表单的target指向该iframe ??4.去掉这个iframe ?*/ function?ajaxup(){ ????????//创建一个iframe并追加到body下面 ????var?ifname=‘up‘+Math.random(); ????$(‘<iframe?name="‘?+ifname?+?‘"?width="0"?height="0"?frameBorder="0"?></iframe>‘).appendTo($(‘body‘)); ????????//把表单target修改指向iframe ????$(‘form:first‘).attr(‘target‘,ifname);?? ????//加入进度条图片 ????$(‘#progress‘).html(‘<img?src="./load.gif"?/>‘); ????//return?false; } ????????</script> ????????<style?type="text/css"> ????????????p{border:1px?solid?gray;}; ????????</style> ????</head> ????<body> ????????<h1>iframe模拟Ajax文件上传效果</h1> ????????<h2></h2> ????????<div?id="progress"></div> ????????<form?action="IframeFileUp.php"?method="post"?enctype="multipart/form-data"?onsubmit="return?ajaxup();"> ????????????<p><input?type="file"?name="pic"??/></p> ????????????<p><input?type="submit"?value="提交"/></p> ????????</form> ????</body> </html> |
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php代码如下:
<?php if(empty($_FILES)){ ????exit(‘no?file‘); } $error?=?$_FILES[‘pic‘][‘error‘]==0??‘文件上传成功‘?:?‘文件上传失败‘; //上传成功 //sleep(3); //cho?"<script>parent.document.getElementsByTagName(‘h2‘)[0].innerHTML?=?‘$error‘</script>"; echo?"<script>parent.document.getElementById(‘progress‘).innerHTML?=?‘<h2>$error</h2>‘</script>"; ? ?> |
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原文地址:http://www.cnblogs.com/lihaiyan/p/4274311.html