过滤器：对比时间显示今天 昨天 明天

//vue实例
var  vm = new Vue({
        el: '#box',
        data: {
           
        },
        methods: {
           
        },
        filters: {
            Time: function (time) {
                var date2 = new Date();
                var year1 = parseInt(time.substr(0, 4));
                var month1 = parseInt(time.substr(5, 2));
                var day1 = parseInt(time.substr(8, 2));
                var year2 = date2.getFullYear();
                var month2 = date2.getMonth() + 1;
                var day2 = date2.getDate();
                var date1 = new Date(year1, month1 - 1, day1);
                var date2 = new Date(year2, month2 - 1, day2);
                var timeX = date1.getTime() - date2.getTime();
                if( Math.abs(timeX) < 24 * 60 * 60 * 1000 ) {
                    return "今天" + time.substr(11, 5);
                } else if ( timeX > 0 && timeX < 48 * 60 * 60 * 1000 ) {
                    return "明天" + time.substr(11, 5);
                } else if ( timeX < 0 && timeX > 0 - 48 * 60 *60 * 1000) {
                    return "昨天" + time.substr(11, 5);
                } else {
                    return time.substr(0, 16);
                }
            }

        }
    });