Thunderbolt Chrome extension caused the data returned by the server JS parsing page data exception

Recently, I was debugging a project in the company , It uses js, When logging into the system , The page cannot jump normally . But I use other browsers （ Google browser is used for debugging ） Can jump normally . That's strange , Use page debugging tools , The return result obtained from the backend is shown in the figure below ：

 

Inadvertently, I debugged js Inside ajax Submit returned formResult Data results , Discover returned json The data format cannot be parsed , There is an extra piece in the back html Code ：

$('#fm-info').form('submit',{
 url: '/admin/shop/edit/1',
				onSubmit: function(){
					return $(this).form('validate');
				},
				success:function(data){
					console.log(data, 9999)
					obj = $.parseJSON(data);
					if(obj.state){
						$.messager.alert(' Prompt information ', obj.message,'info', function(){
                            var urlRecordList='/admin/shop/list';
                            parentRefreshTab(' Shop list ',urlRecordList);
                            parentCloseCurrentTab();
						});
				    }else{
				    	$.messager.alert(' Prompt information ', obj.message);
					}
				}
			});			    

{"state":true,"message":" Store update succeeded ！","data":{"id":63186}}<div class="xl-chrome-ext-bar" id="xl_chrome_ext_{4DB361DE-01F7-4376-B494-639E489D19ED}" style="display: none;">
      <div class="xl-chrome-ext-bar__logo"></div>

      <a id="xl_chrome_ext_download" href="javascript:;" class="xl-chrome-ext-bar__option"> Download Video </a>
      <a id="xl_chrome_ext_close" href="javascript:;" class="xl-chrome-ext-bar__close"></a>
    </div>

 

A strange result appears in the figure above , After querying, the back-end code did not add the returned result . I wonder why the above code is spliced behind the back-end return result . But I saw “ Download Video ” A few words Suddenly it occurred to me that the browser has installed Xunlei plug-in these days , Close the plug-in first , Log in to the website again , Sure enough, the jump returned to normal .