Home Web Front-end HTML Tutorial iframe无刷新上传文件_html/css_WEB-ITnose

iframe无刷新上传文件_html/css_WEB-ITnose

Jun 21, 2016 am 08:51 AM

许多系统都会有上传图片这个功能,但是如果是用form表单提交的话,每次都会刷新页面,这样体验很不好;今天分享一个利用iframe实现无刷新上传文件的方法,直接上代码:

html

<form class="form-horizontal text-sm" id="upload" name="upload[]" target="frm" action="/ERP/files/upFiles" method="post" enctype="multipart/form-data"> <input type='file' id="file" name="files[]" accept=".csv" multiple="multiple" /> <input type="hidden" name="MAX_FILE_SIZE" value="10485760" />  //限制文件大小</form><iframe id='frm' name='frm' style="display: none;"></iframe>
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javascript

<script type="text/javascript"> function callback(res){    console.log(res);  //返回的对象 }  var frm = $("#frm");  frm.load(function(){   var wnd = this.contentWindow;   var str = $(wnd.document.body).find("pre").html();   str=JSON.parse(str);  //将json字符串数据转换成对象Object   callback(str); });</script>
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原理:认真看的同学会发现,此处的iframe是隐藏的,此方法就是通过隐藏的iframe来提交数据,所以原来的页面就不会被刷新了;

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