zone.js：25未捕获的错误：区域已加载

Question

单击按钮即可加载我的角度应用程序。 单击按钮时，由于第一次加载angular2时会加载zone.js内容，因此出现Zone already loaded错误。

我将如何检查区域是否已加载，然后如何阻止尝试加载该区域（如果可用）？

当我通过delete window['zone']删除（在下面回答）区域并尝试再次重新加载它时，显示的zone.js:984 Uncaught ReferenceError: Zone is not defined

Answer 1

您可以尝试这样的事情...

 $(function (){ function removejscssfile(filename, filetype){ var targetelement=(filetype=="js")? "script" : (filetype=="css")? "link" : "none" //determine element type to create nodelist from var targetattr=(filetype=="js")? "src" : (filetype=="css")? "href" : "none" //determine corresponding attribute to test for var allsuspects=document.getElementsByTagName(targetelement) for (var i=allsuspects.length; i>=0; i--){ //search backwards within nodelist for matching elements to remove if (allsuspects[i] && allsuspects[i].getAttribute(targetattr)!=null && allsuspects[i].getAttribute(targetattr).indexOf(filename)!=-1) allsuspects[i].parentNode.removeChild(allsuspects[i]) //remove element by calling parentNode.removeChild() } } var jsCustomerTag = $("head").children("#jsShimTag"); if (jsCustomerTag.length == 0) { jsCustomerTag = document.createElement('script'); jsCustomerTag.setAttribute("type", "text/javascript"); jsCustomerTag.setAttribute("src", " <your js file> "); jsCustomerTag.id = "jsShimTag"; document.getElementsByTagName("head")[0].appendChild(jsCustomerTag); } jsCustomerTag = null; });