依赖加载简单实现方式
function loadScript(url, callback) { var script = document.createElement("script"); script.type = "text/javascript"; script.src = url; document.getElementById("srciptCode").appendChild(script); script.onload = function() { callback(); } } loadScript("../js/jquery-1.8.3.min.js",function(){ console.log("jquery-1.8.3.min.js ok") loadScript("../js/jquery.qrcode.min.js",function(){ console.log("jquery.qrcode.min.js ok") loadScript("../js/ui.min.js?0107",function(){ console.log("ui.min.js ok") loadScript("../js/activity/code.min.js?0107",function(){ console.log("code.min.js ok") }) }) }) })