vue3+ts import引入第三方js文件报错的2种解决方法

  <script type="text/javascript" src="xxx.js"></script>

//移除js或者css
function removejscssfile(filename,filetype){
   let targetelement = (filetype === "js")? "script" :(filetype === "css")? "link" : "none";
     let targetattr = (filetype === "js")?"src" : (filetype === "css")? "href" :"none";
     let allsuspects = document.getElementsByTagName(targetelement);
     for (let i = allsuspects.length; i >= 0; i--){
         if (allsuspects[i] && allsuspects[i].getAttribute(targetattr) != null && allsuspects[i].getAttribute(targetattr).indexOf(filename)!= -1)
             allsuspects[i].parentNode.removeChild(allsuspects[i])
     }
 }
//加载js或者css
function loadjscssfile(filename, filetype){
     if (filetype === "js"){
         var fileref = document.createElement('script');
         fileref.setAttribute("type","text/javascript");
         fileref.setAttribute("src",filename);
     } else if (filetype === "css"){
         var fileref = document.createElement("link");
         fileref.setAttribute("rel","stylesheet");
         fileref.setAttribute("type","text/css");
         fileref.setAttribute("href",filename);
     }
     if (typeof fileref != "undefined") {
         document.getElementsByTagName("head")[0].appendChild(fileref);
     }
 }
//在vue钩子里执行
onBeforeMount(()=> {
     loadjscssfile("mystyle.css", "css")
     loadjscssfile("xxx.js?" + Math.random(), "js");
 })
 //销毁
 onUnmounted(()=>{
     removejscssfile("mystyle.css", "css");
     removejscssfile("xxx.js", "js");
 })