function sourceController(){
  var root = "";
  var cssCount = 0; // css加載計數(shù)器
  var jsCount = 0; // js加載計數(shù)器

  this.callfunc = null; // 回調(diào)函數(shù)

  this.opt = {
    root : root
  };

  this.css = {
    css0 : "javaScript/bootstrap/css/bootstrap.css",
    css1 : "css/iconfont/iconfont.css",
    css2 : "css/common.css"
  };

  this.script = {
    script0 : "javaScript/jquery.js",
    script1 : "javaScript/bootstrap/js/bootstrap.js"
  };

  /* 設(shè)置文件根目錄
   * @param url 根目錄地址
   */
  this.setRoot = function(url){
    root = url;
  };

  /* 設(shè)置回調(diào)函數(shù)
   * @param func 回調(diào)函數(shù)
   */
  this.setCallBack = function(func){
    this.callfunc = func;
  };

  /* 添加Script文件 請在addSource錢調(diào)用
   * @param url script文件路徑
   */
  this.addScript = function(url){
    if (url === "" || url == null) return;
    this.script["script" + Object.getOwnPropertyNames(this.script).length] = url;
  };

  /* 添加CSS文件 請在addSource錢調(diào)用
   * @param url css文件路徑
   */
  this.addCss = function(url){
    if (url === "" || url == null) return;
    this.css["css" + Object.getOwnPropertyNames(this.css).length] = url;
  };

  /* 添加常用資源 */
  this.addSource = function(){
    console.log("Source");
    addMeta([["http-equiv", "X-UA-Compatible"],["content", "IE=edge"]]);
    addMeta([["name", "viewport"],["content", "width=device-width, initial-scale=1"]]);

    createCss(this);
  };

  /* 回調(diào)函數(shù)
   * @param func 回調(diào)方法
   * @param obj 當(dāng)前對象
   */
  function callback(obj){
    console.log("func run");
    obj.callfunc();
  }

  /* 添加<link> 默認先加載css
   * @param obj 當(dāng)前對象
   */
  function createCss(obj){
    // 如果沒有css文件，不加載
    if(Object.getOwnPropertyNames(obj.css).length <= 0) return;
    var url = obj.css["css" + cssCount];
    console.log(url);
    var css = document.createElement("link");
    css.setAttribute("rel", "stylesheet");
    if (root != "") {
      url = root + "/" + url;
    }
    css.href = url;
    document.getElementsByTagName("head")[0].appendChild(css);
    css.onload = function(){
      cssCount++;
      if (cssCount < Object.getOwnPropertyNames(obj.css).length){
        createCss(obj);
      }else{
        // 如果有js文件，開始加載js
        if(Object.getOwnPropertyNames(obj.script).length > 0){
          createJs(obj);
        }
      }
    };
  }

  /* 添加<script> js加載完后執(zhí)行回調(diào)函數(shù)
   * @param obj 當(dāng)前對象
   */
  function createJs(obj){
    // 如果沒有js文件，不加載
    if(Object.getOwnPropertyNames(obj.script).length <= 0) return;
    var url = obj.script["script" + jsCount];
    console.log("time:" + new Date().getTime() + " " + url);
    var script = document.createElement("script");
    script.setAttribute("type","text/javascript");
    if (root != "") {
      url = root + "/" + url;
    }
    script.src = url;
    document.getElementsByTagName("head")[0].appendChild(script);
    script.onload = function(){
      jsCount++;
      if (jsCount < Object.getOwnPropertyNames(obj.script).length){
        createJs(obj);
      }else{
        // 如果有回調(diào)函數(shù) 執(zhí)行回調(diào)函數(shù)
        if(obj.callfunc != null){
          callback(obj);
        }
      }
    }
  }

  /* 添加meta
   * @param attr meta屬性，為二維數(shù)組
   */
  function addMeta(attr){
    console.log("meta");
    var meta = document.createElement("meta");
    for (var i = 0; i < attr.length; i++){
      meta.setAttribute(attr[i][0], attr[i][1]);
    }
    document.getElementsByTagName("head")[0].appendChild(meta);
  }
}

window.onload = function(){
  var sc = new sourceController();
  sc.addCss("css/index.css"); // 額外添加的css文件，必須在加載資源之前加入
  sc.addScript("javaScript/index.js"); // 額外添加的js文件，必須在加載資源之前加入
  sc.setCallBack(function(){
    document.body.style.display = "block"; // 顯示body
  });
  sc.addSource(); // 加載常用的js和css文件
};