解决方法，用以下方法加载js:

复制代码 代码如下:

var loadScript = function(url, callback, charset){

var head = document.getElementsByTagName('head')[0];

var script = document.createElement('script');

if(charset){

script.charset = charset;

}

script.src = url;

if(!callback){

return;

}

script.onload = script.onreadystatechange = function(){

if(!this.readyState || this.readyState==='loaded' || this.readyState==='complete'){

callback();

}

};

head.appendChild(script);

};