其实很简单，我这部分代码，前一部分是简单的实现如何使用js写模板，第二个就是具体的实现了json查询的一个扩展。
     以后查询json就有了利器了。
复制代码 代码如下:
/*
         * 定义模板函数
        */
        var template = function (queryarr) {            var count = 0;
            for (var i = 0; i
                var e = queryarr[i];
                if ($express) {
                    count++;
                }
            }
            return count;
        }
        /*
         * 模板创建函数
        */
        var createintance = function (exp) {
            var fun = template.tostring().replace($express, exp).tostring();
            return eval(0, + fun);
        }
        var testtodo = function () {
            var testarr = [
                { name: 张三, age: 20 },
                { name: 李四, age: 25 },
                { name: 王二麻子, age: 28 },
                { name: 小张, age: 30 }
            ];
            var func = createintance(e.age>=25);
            alert(func(testarr));
        }
        /****************** js 实现 json查询 **********************/
// 定义常用的函数
        var len = function (s) { return s.length; }
        var left = function (s, n) { return s.substr(0, n); }
        var right = function (s, n) { return s.substr(-n); }
        var index = function (s, find) { return s.indexof(find) + 1; }
        // 扩展原型方法
        var _proto = object.prototype;
        // 缓存,解决快速查找
        var _cache = {};
        // 扩展运算符
        var _alias = [
            /@/g, _e.,
            /and/gi, &&,
            /or/gi, ||,
            //g, !=,
            /not/gi, !,
            /([^=])=([^=]|$)/g, '$1==$2'
        ];
        var _rquote = //g;
        var _rquotetemp = /!~/g;
        // 编译
        var _complite = function (code) {
            return eval(0, + code);
        }
        // 将扩展符号转换成标准的js符号
        var _interpret = function (exp) {
            exp = exp.replace(_rquote,!~);
            var arr = exp.split('');
            var i, n = arr.length;
            var k = _alias.length;
            for (var i = 0; i                 var s = arr[i];
                for (var j = 0; j                     if (index(s, _alias[j]) > -1) {
                        s = s.replace(_alias[j], _alias[j + 1]);
                    }
                }
                arr[i] = s;
            }
            for (var i = 1; i                 arr[i] = arr[i].replace(_rquotetemp, '\\');
            }
            return arr.join('');
        }
        // 定义模函数
        var _templ = function (_list) {
            var _ret = [];
            var _i = -1;
            for (var _k in _list) {
                var _e = _list[_k];
                if (_e != _proto[_k]) {
                    if ($c) {
                        _ret[++_i] = _e;
                    }
                }
            }
            return _ret;
        } .tostring();
        // 扩展查询的方法
        _proto.query = function (exp) {
            if (!exp) {
                return [];
            }
            var fn = _cache[exp];
            try {
                if (!fn) {
                    var code = _interpret(exp);
                    code = _templ.replace($c, code);
                    fn = _cache[exp] = _complite(code);
                }
                return fn(this);
            } catch (e) {
                return [];
            }
        }
        var dotest = function () {
            var heros = [
            // 名============攻=====防=======力量====敏捷=====智力====
                {name: '冰室女巫', dp: 38, ap: 1.3, str: 16, dex: 16, int: 21 },
                { name: '沉默术士', dp: 39, ap: 1.1, str: 17, dex: 16, int: 21 },
                { name: '娜迦海妖', dp: 51, ap: 6.0, str: 21, dex: 21, int: 18 },
                { name: '赏金猎人', dp: 39, ap: 4.0, str: 17, dex: 21, int: 16 },
                { name: '剧毒术士', dp: 45, ap: 3.1, str: 18, dex: 22, int: 15 },
                { name: '光之守卫', dp: 38, ap: 1.1, str: 16, dex: 15, int: 22 },
                { name: '炼金术士', dp: 49, ap: 0.6, str: 25, dex: 11, int: 25 }
            //...
            ];
            var match = heros.query('@str>20 and @dex>20');
            showresult(match[0]);
// 查询：“士”结尾的
            // 结果：沉默术士,剧毒术士,炼金术士
            var match = heros.query('right(@name,1)=士');
            showresult(match[0]);
        }
        function showresult(result) {
            alert(result.name + + result.dp + + result.ap + + result.str + + result.dex + + result.int);
        }
代码就是这样了。欢迎大家拍砖，或者可以提出新的想法。我们一起来扩展