JQuery的.父窗口操作IFRAME里的元素的方法

iframe内容

<iframe id="upload" name="upload" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="?manage_uplode&iframe=1" frameborder="0" height="40" width="400" scrolling="no"></iframe>

JQuery内容:

$('#upload').load(function(){  
   alert($('#upload').contents().find('#uplode_filename').html());
});