js返回当前时间年月日格式

function gettime() {
            var date = new Date();
            var year = date.getFullYear();
            var moth = date.getMonth()+1;
            var dates = date.getDate();
            var arr = ['星期日','星期一','星期二','星期三','星期四','星期五','星期六'];
            var day = date.getDay();
            return year + '年' + moth + '月' + dates + '日' + arr[day];
        }

输出结果：