jq时间戳转换成日期形式

   function timestampToTime(timestamp) {
        var date = new Date(timestamp * 1000);//时间戳为10位需*1000，时间戳为13位的话不需乘1000
        var Y = date.getFullYear() + '-';
        var M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-';
        var D = date.getDate();
        var h = date.getHours();
        var m = date.getMinutes();

        if (D < 10) {
        	D = '0' + D ;
        }
        if (h < 10)
        	h = "0" + h ;
        if (m < 10)
        	m = "0" + m ;

        return Y+M+D+ ' '+h+ ':'+m;
    }