Js时间范围计算

js时间范围计算

背景

在设置layui时间范围选择器的默认值时想动态设置近五天的时间。故此写下此段代码

代码

 const getNowDate = (dayinterval =0) => {
          
            var date = new Date();
            var sign2 = ":";
            if (dayinterval != 0) {
                var interval = date.getDate() - dayinterval;
                if (interval < 0) {
                    date.setMonth(date.getMonth())
                }
                date.setDate(date.getDate() - dayinterval)
            }
            var year = date.getFullYear() // 年
            var month = date.getMonth() + 1; // 月
            var day = date.getDate(); // 日
            var hour = date.getHours(); // 时
            var minutes = date.getMinutes(); // 分
            var seconds = date.getSeconds() //秒
           
            // 给一位数的数据前面加 “0”
            if (month >= 1 && month <= 9) {
                month = "0" + month;
            }
            if (day >= 0 && day <= 9) {
                day = "0" + day;
            }
            if (hour >= 0 && hour <= 9) {
                hour = "0" + hour;
            }
            if (minutes >= 0 && minutes <= 9) {
                minutes = "0" + minutes;
            }
            if (seconds >= 0 && seconds <= 9) {
                seconds = "0" + seconds;
            }
            return year + "-" + month + "-" + day + " " + hour + sign2 + minutes + sign2 + seconds;
        }
           //日期
        laydate.render({
            elem: '#timeRange'
            , type: 'datetime'
            , range: true
            , max: '@DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")'
            , min: -180
            , value: getNowDate(5)+ " - " + getNowDate()
        });