Converting a DateTime SQL with String to Jquery

Apparently that value is the millisecond representation of a date.

You can create a new instance of Date(); using javascript.

Thanks to this page , we can see the following example:

console.log(new Date(1503090145770));

// Resultado:
Fri Aug 18 2017 16:02:25 GMT-0500 (Hora est. Pacífico, Sudamérica)

Thank you very much everyone for your help! In the end I managed to solve it a little as they commented to me below but with a slight modification:

        var dateString = time.substr(6);
        var currentTime = new Date(parseInt(dateString));
        var month = currentTime.getMonth() + 1;
        var day = currentTime.getDate();
        var year = currentTime.getFullYear();
        var hour = currentTime.getHours();
        var min = currentTime.getMinutes();
        var date = day + "/" + month + "/" + year + " " + hour + ":" + min + " " + "a.m"/"p.m";

Where time is my date type: / Date (1503090145770) /. I got the digits, with parseint I passed them to the whole (since it was a string) and finally I used new Date as they suggested, thank you very much!