前端js轉換時間戳為時間類型顯示

//時間戳轉換
function add0(m){return m<10?'0'+m:m }
function formatDate(timestamp)
{
//timestamp是整數，否則要parseInt轉換
    var time = new Date(timestamp);
    var y = time.getFullYear();
    var m = time.getMonth()+1;
    var d = time.getDate();
    var h = time.getHours();
    var mm = time.getMinutes();
    var s = time.getSeconds();
    return y+'-'+add0(m)+'-'+add0(d)+' '+add0(h)+':'+add0(mm)+':'+add0(s);
}