prototype.js

//提示:本方法包中都是向内置类的原型上增加方法,请谨慎使用

(function (pro) {
    //unique：Array distinct
    pro.unique = function unique() {
        var obj = {};
        for (var i = 0; i < this.length; i++) {
            var cur = this[i];
            obj[cur] == cur ? (this[i] = this[this.length - 1], this.length -= 1, i--) : obj[cur] = cur;
        }
        obj = null;
        return this;
    };

    //myForEach：forEach compatibility
    pro.myForEach = function myForEach(callBack, context) {
        if (Array.prototype.forEach) {
            return this.forEach(callBack, context);
        }
        for (var i = 0; i < this.length; i++) {
            callBack.call(context, this[i], i, this);
        }
    };

    //myMap：map compatibility
    pro.myMap = function myMap(callBack, context) {
        if (Array.prototype.map) {
            return this.map(callBack, context);
        }
        for (var i = 0; i < this.length; i++) {
            this[i] = callBack.call(context, this[i], i, this);
        }
        return this;
    };
})(Array.prototype);

(function (pro) {
    //myTrim：Remove the string and space
    pro.myTrim = function myTrim() {
        return this.replace(/(^ +| +$)/g, "");
    };

    //mySub：Intercept string, this method is distinguished in English
    pro.mySub = function mySub() {
        var len = arguments[0] || 10, isD = arguments[1] || false, str = "", n = 0;
        for (var i = 0; i < this.length; i++) {
            var s = this.charAt(i);
            /[\u4e00-\u9fa5]/.test(s) ? n += 2 : n++;
            if (n > len) {
                isD ? str += "..." : void 0;
                break;
            }
            str += s;
        }
        return str;
    };

    //myFormatTime：Format time
    pro.myFormatTime = function myFormatTime() {
        var reg = /^(\d{4})(?:-|\/|\.|:)(\d{1,2})(?:-|\/|\.|:)(\d{1,2})(?:\s+)(\d{1,2})(?:-|\/|\.|:)(\d{1,2})(?:-|\/|\.|:)(\d{1,2})$/g, ary = [];
        this.replace(reg, function () {
            ary = ([].slice.call(arguments)).slice(1, 7);
        });
        var format = arguments[0] || "{0}年{1}月{2}日 {3}:{4}:{5}";
        return format.replace(/{(\d+)}/g, function () {
            var val = ary[arguments[1]];
            return val.length === 1 ? "0" + val : val;
        });
    };

    //queryURLParameter：Gets the parameters in the URL address bar
    pro.queryURLParameter = function queryURLParameter() {
        var reg = /([^?&=]+)=([^?&=]+)/g, obj = {};
        this.replace(reg, function () {
            obj[arguments[1]] = arguments[2];
        });
        return obj;
    };
})(String.prototype);