js 動態創建標簽 並執行其標簽中的內容

//獲取head的標簽
var head= document.getElementsByTagName('head')[0];
//創建script標簽
var script= document.createElement('script');
//屬性賦值
script.type= 'text/javascript';
//下面為必要操作 否則將不能使用script標簽中的內容
script.onload = script.onreadystatechange = function() {
 if (!this.readyState || this.readyState === "loaded" || this.readyState === "complete" ) {
 script.onload = script.onreadystatechange = null;
 } };
//添加src屬性值
script.src= url;(url為你自己的添加js 文件的路徑)
head.appendChild(script);

------------此處討論跳入后台加載js文件的一種方式 (后台使用重定向)---------------

<script type="text/javascript" src="http://localhost:8080/aaa/cc/yyxx/hj/getJsInformation.action"></script>

@RequestMapping(value = "/getJsInformation.action")
public String getJsInformation(HttpServletResponse response, HttpServletRequest request,@RequestParam HashMap<String, Object> map) {
 List<HashMap<String, Object>> list = service.getJS(map);
 return "redirect:"+"http://localhost:8080/upload/abc.js";//沖定向到你js文件全路徑地址即可
}