js将时间搓转换成字符串格式

var timestamp = '1425553097';
var d = new Date(timestamp * 1000);    //根据时间戳生成的时间对象
var date = (d.getFullYear()) + "-" + 
(d.getMonth() + 1) + "-" +
(d.getDate()) + " " + 
(d.getHours()) + ":" + 
(d.getMinutes()) + ":" + 
(d.getSeconds());
document.write(date);