js时间字符串比较、加减一天

客官°小女子只卖身不卖艺 2022-05-14 05:23 291阅读 0赞

时间字符串比较

var startTime='2018-09-03'; 
    var endTime='2018-09-06'; 
    var startDate = new Date(Date.parse(startTime.replace(/-/g,"/")));
    var endDate = new Date(Date.parse(endTime.replace(/-/g,"/")));
    if (startDate > endDate) {
         alert(startDate > endDate);
    }

时间字符串加减一天

//加一天
    function addDate(time) {
        //加一天
        var timestamp = Date.parse(new Date(time));
        timestamp = timestamp /1000;
        timestamp += 86400;//加一天
        var newTime =new Date(timestamp * 1000).format('yyyy-MM-dd');
        return newTime;
    }
    
    //减一天
    function delDate(time) {
        var timestamp = Date.parse(new Date(time));
        timestamp = timestamp /1000;
        timestamp -= 86400;//加一天
        var newTime =new Date(timestamp * 1000).format('yyyy-MM-dd');
        return newTime;
    }
    
    //日期格式
    Date.prototype.format = function(format) {
        var date = {
            "M+": this.getMonth() + 1,
            "d+": this.getDate(),
            "h+": this.getHours(),
            "m+": this.getMinutes(),
            "s+": this.getSeconds(),
            "q+": Math.floor((this.getMonth() + 3) / 3),
            "S+": this.getMilliseconds()
        };
        if (/(y+)/i.test(format)) {
            format = format.replace(RegExp.$1, (this.getFullYear() + '').substr(4 - RegExp.$1.length));
        }
        for (var k in date) {
            if (new RegExp("(" + k + ")").test(format)) {
                format = format.replace(RegExp.$1, RegExp.$1.length == 1
                    ? date[k] : ("00" + date[k]).substr(("" + date[k]).length));
            }
        }
        return format;
    }