Uncaught DOMException: Failed to execute 'setAttribute' on 'Element': ''' is not a valid attribute name.
    at h.syncContent (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:230681)
    at h.syncContent (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:231257)
    at h.syncContent (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:231257)
    at A.updateColumns (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:1195261)
    at A.onUpdate (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:1194575)
    at A.fire (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:108313)
    at A.continueFireEvent (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:124033)
    at A.fireEventArgs (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:123813)
    at A.a.fireEventArgs (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:451738)
    at A.fireEvent (http://cxpsi.cn/web/Public/ExtJS/ext-all.js:21:123661)

原因是在一个renderer函数里面，返回的html代码写错了： 

 var html = "<div class='div_affix_mgr'  ' >  " +
            "图片管理" +
            "</div>";

        return html;

多了个单引号