如何在ajax中获得正确的日期格式？

I have an function to get forecast weather ajax to load this into div but the date in json have a datetime format type: "dt":1452254400

I need format: 'Y-m-d' but in ajax I can't use the gmdate() php function to get this.

I'm trying get this with

  $.ajax({
    url: urlforecast,
    dataType:"JSON",
    success:function(data){
       var str = (""+data['list'][0]['dt']);

       var num = parseInt(str.replace(/[^0-9]/g, ""));
       var date = new Date(num);
       alert(date);

But he format is: Sat Jan 17 1970 20:29:56 GMT+0100 and I dislike this.

How can I get the format like gmdate() into ajax function?

You have seconds since epoch, javascript uses milliseconds, so you have to multiply by a thousand

$.ajax({
    url      : urlforecast,
    dataType : "JSON",
    success  : function(data){
        var num  = (+data['list'][0]['dt']) * 1000;
        var date = new Date(num);
    }
});

To get Y-m-d you'd do

var date = new Date(num);
var ymd  = date.getFullYear() + '-' + (date.getMonth() + 1) + '-' + date.getDate();

Try multiplying num by 1000 , using .toJSON(), String.prototype.slice()

var num = 1452254400;
var ymd = new Date(num * 1000).toJSON().slice(0, 10);
console.log(ymd)

</div>