js怎么得到北京时间

        var date = new Date();  //获取当前的时间
        var year = date.getFullYear()
        console.log(year)
        var month= date.getMonth()+1
        console.log(month)
        var day = date.getDate()
        console.log(date)
        var week = date.getDay()
        var hours = date.getHours()    
        console.log(hours)
        var min = date.getMinutes()
        console.log(min)
        var sec = date.getSeconds()
        // 因为var week = date.getDay()得到的是数字0~1 所以用switch语句来赋值
        switch(week){
            case 0:
                week='星期日'
                break;
            case 1:
                week='星期一'
                break;
            case 2:
                week='星期二'
                break;
            case 3:
                
                week='星期三'
                break;
            case 4:
                week='星期四'
                break;
            case 5:
                week='星期五'
                break;
            case 6:
                week='星期六'
                break;
        }