How to convert milliseconds to date

Question

I would like to know how I can make a millisecond to date conversion within a field in a json.

For example

$http.get("http://teste").success(function (dados) {

        ng.locations = $.map(dados, function(job) {

                return job.jobList;
        });
    });
},

example of json

[

{
    "description":"Job de Teste",
    "jobList":[
        {
            "jobID":01,
            "jobState":"OK",
            "jobName":"TESTE",
            "jobCompleteTime":1407783800000 //tempo em milisec.
        }
    ]
}

]

Return me this json, I need to convert a field within jobList before return. How can I specifically treat only one field before return?

Answer 1

Just pass the time in milliseconds to the builder of the type Date() :

tempo = //milisegundos
date = new Date(tempo);
alert(date.toString());

Answer 2

Within that .map() have to iterate all array objects and change/overwrite each date. To traverse the objects you can use a cycle for. Then you have to go to the right property and write it over

for(var i = 0; i < job.jobList.length; i++){
    var data = job.jobList[i].jobCompleteTime;
    job.jobList[i].jobCompleteTime = new Date(data).toString(); // fica "Mon Aug 11 2014 21:03:20 GMT+0200 (W. Europe Daylight Time)"
}
// aqui fazer o return job.jobList;

If you want to format to another format, for example: yyyy-mm-dd, you can do

for(var i = 0; i < job.jobList.length; i++){
    var data = job.jobList[i].jobCompleteTime;
    var d = new Date(data);
    job.jobList[i].jobCompleteTime = d.getFullYear()+ "-" + (d.getMonth() + 1) + "-" + d.getDate();
}
// aqui fazer o return job.jobList;