JS扩展

String.prototype.replaceAll = function (oldStr, newStr) {
    var sourceStr = this.valueOf();
    while (sourceStr.indexOf(oldStr) !== -1) {
        sourceStr = sourceStr.replace(oldStr, newStr);
    }
    return sourceStr;
};

Date.prototype.monthDay = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
Date.prototype.weekName = ["星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"];

Date.prototype.addDay = function () {
    return this.addDays(1);
};

Date.prototype.addDays = function (days) {
    this.setTime(this.getTime() + 1000 * 60 * 60 * 24 * days);
};

/*判断某年某月某日是星期几，默认日为1号*/
Date.prototype.getWeek = function () {
    return this.weekName[this.getDay()];
};

/*判断某年是否是闰年*/
Date.prototype.getLeap = function (year) {
    if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
        return 29;
    } else {
        return 28;
    }
};

Date.prototype.equal = function (d) {
    return this.getFullYear() == d.getFullYear() && this.getMonth() == d.getMonth() && this.getDate() == d.getDate();
};

Date.prototype.toDateString = function () {
    return this.getFullYear() + "-" + (this.getMonth() + 1) + "-" + this.getDate();
};