/**

      * 搜索url参数

      * @param  {String} name 参数键名

      * @return {String}      对应值

      */

     function getQueryVariable(name) {

         var result = location.search.match(new RegExp("[\?\&]" + name + "=([^\&]+)", "i"));

         if (result == null || result.length < 1) {

             return "";

         }

         return result[1];

     };

     /**

      * 删除字符串空格

      * @param  {String} text 输入字符串

      * @return {String}

      */

     function trim(text) {

         var rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;

         return text == null ?

             "" :

             (text + "").replace(rtrim, "");

     };

     function parseJSON(data) {

         // Attempt to parse using the native JSON parser first

         if (window.JSON && window.JSON.parse) {

             return window.JSON.parse(data);

         }

         if (data === null) {

             return data;

         }

         if (typeof data === "string") {

             var rvalidchars = /^[\],:{}\s]*$/,

                 rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,

                 rvalidescape = /\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,

                 rvalidtokens = /"[^"\\\r\n]*"|true|false|null|-?(?:\d+\.|)\d+(?:[eE][+-]?\d+|)/g,

                 // Make sure leading/trailing whitespace is removed (IE can't handle it)

                 data = trim(data);

             if (data) {

                 // Make sure the incoming data is actual JSON

                 // Logic borrowed from http://json.org/json2.js

                 if (rvalidchars.test(data.replace(rvalidescape, "@")

                         .replace(rvalidtokens, "]")

                         .replace(rvalidbraces, ""))) {

                     return (new Function("return " + data))();

                 }

             }

         }

         console.error("Invalid JSON: " + data);

     };