动态创建JavaScript加载外面js文件

 

function loadScript(url, callback) { var script = document.createElement('script'); script.type = 'text/javascript'; // IE if (script.readyState) { script.onreadystatechang = function () { if (script.readyState == 'complete' || script.readyState == 'loaded') { callback(); } } } else { script.onload = function () { callback(); } } script.src = url; document.body.appendChild(script); }