过滤器：对比时间显示今天 昨天 明天详解编程语言

//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); 
                } 
            } 
 
        } 
    });