for (var i = 0, len = data.length; i < len; i++) {

   fragment += template

       .replace(/\{\{title\}\}/, data[i].title)

       .replace(/\{\{href\}\}/, data[i].href)

       .replace(/\{\{imgSrc\}\}/, data[i].imgSrc)

}

result.innerHTML = fragment;

方法二：

var doc = document,

   template = doc.querySelector('#template').innerHTML,

   result = doc.querySelector('.result'),

   attachTemplateToData;

attachTemplateToData = function (template, data) {

   var i = 0,

       len = data.length,

       fragment = '';

   function replace(obj) {

       var t, key, reg;

       for (key in obj) {

           reg = new RegExp('{{' + key + '}}', 'ig');

           t = (t || template).replace(reg, obj[key]);

       }

       return t;

   }

   for (; i < len; i++) {

       fragment += replace(data[i]);

   }

   return fragment;

};

result.innerHTML = attachTemplateToData(template, data);

实现JS函数重载

var people = {

   values: ["Dean Edwards", "Sam Stephenson", "Alex Russell", "Dean Tom"]

};

function addMethod(object, name, fn) {

   var old = object[name];