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  • js日期重写

    Date.prototype.Format = function (fmt) {
        var o =
         {
             "M+": this.getMonth() + 1, //月份 
             "d+": this.getDate(), //日 
             "h+": this.getHours(), //小时 
             "m+": this.getMinutes(), //分 
             "s+": this.getSeconds(), //秒 
             "q+": Math.floor((this.getMonth() + 3) / 3), //季度 
             "S": this.getMilliseconds() //毫秒 
         };
        if (/(y+)/.test(fmt))
            fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
        for (var k in o)
            if (new RegExp("(" + k + ")").test(fmt))
                fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
        return fmt;
    }
    Date.prototype.addDays = function (d) {
        this.setDate(this.getDate() + d);
    };
    
    Date.prototype.addWeeks = function (w) {
        this.addDays(w * 7);
    };
    
    Date.prototype.addMonths = function (m) {
        var d = this.getDate();
        this.setMonth(this.getMonth() + m);
        if (this.getDate() < d)
            this.setDate(0);
    };
    
    Date.prototype.addYears = function (y) {
        var m = this.getMonth();
        this.setFullYear(this.getFullYear() + y);
        if (m < this.getMonth()) {
            this.setDate(0);
        }
    };
    var today = new Date();
    alert(today.Format("yyyy-MM-dd"));
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  • 原文地址:https://www.cnblogs.com/TivonStone/p/3600534.html
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