Generate random number with current date and time value with Javascript

Another way to generate this value is to multiply the current date and time ( in seconds ) by a random value of #

function datatimeRandom() {
    return((new Date().getTime() / 1000) * Math.random());
}

alert(datatimeRandom());

DEMO

See the following example:

function dataAleatoria(dataIni) {
    var dataAtual = new Date();
    return new Date(dataIni.getTime() + Math.random() * (dataAtual.getTime() - dataIni.getTime()));
}

var minhaDataAleatoria = dataAleatoria(new Date(2012, 0, 1));

The dataAleatoria(date) function generates a random date based on a date passed as a parameter.

If you do not want to pass any date as a parameter, you can do as shown in the code below:

function dataAleatoria() {
    var dataIni = new Date(2012, 0, 1);
    var dataAtual = new Date();
    return new Date(dataIni.getTime() + Math.random() * (dataAtual.getTime() - dataIni.getTime()));
}

var minhaDataAleatoria = dataAleatoria();

Note that in both examples, the current date is used to generate another random date.