Ajaxupload.js在最新版chrome 83版浏览器oncomplete失效问题解决方法

最新突然有一批用户反馈说数据上传报了空弹窗错误，由于最近发了版本，排查下来，发现就谷歌浏览器报错，然后发现就升级到了最新的83版本，才会有此错误

很多老的项目用ajaxupload 上传文件，但chrome浏览器升级到83版本后，oncomplete 方法就失效了。
查看了ajaxupload源码后，Github:Ajaxupload.js

_createIframe: function(){

    // We can't use getTime, because it sometimes return

    // same value in safari :(

    var id = getUID();           

      

    // We can't use following code as the name attribute

    // won't be properly registered in IE6, and new window

    // on form submit will open

    // var iframe = document.createElement('iframe');

    // iframe.setAttribute('name', id);                       

 

    var iframe = toElement('<iframe src="javascript:false;" name="' + id + '" />');

    // src="javascript:false; was added

    // because it possibly removes ie6 prompt

    // "This page contains both secure and nonsecure items"

    // Anyway, it doesn't do any harm.           

    iframe.setAttribute('id', id);

     

    iframe.style.display = 'none';

    document.body.appendChild(iframe);

     

    return iframe;

},

把var iframe = toElement('<iframe src="javascript:false;" name="' + id + '" />');
改成var iframe = toElement('<iframe src="about:blank" name="' + id + '" />');后，
oncomplete恢复正常。