解决js中引入js，以及跨域的问题
推荐使用：
addJs("https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.min.js");
addJs("https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js");
function addJs(src){
//document.write("<script language='javascript' src='" + src +"'></script>");
var newJs = document.createElement("script");
//newJs.setAttribute("type", "text/javascript");
newJs.type = "text/javascript";
newJs.async = false;
newJs.charset = 'utf-8';
newJs.src = src;
var firstScript = document.getElementsByTagName('script')[0];
firstScript.parentNode.insertBefore(newJs, firstScript);
}
document.write方式谷歌高版本浏览器报错：
A parser-blocking, cross site (i.e. different eTLD+1) script, xxx, is invoked via document.write.