Make a regex to remove characters

Question

In a return of a jquery function, the date returned comes in this format.

/Date(1401731794773)/

I would like to remove the invalid characters on that date, which are:

/Date( and )/

I only need the date component (remaining numeric) to compose a valid date. So how do I do that? I think a REGEX would be the best way, right?

Answer 1

Regex in this case is Overkill... Simply use substring:

var entrada = "/Date(1401731794773)/";
var conteudo = entrada.substring(6, entrada.length-2);

This is possible in this case because both prefix and suffix have fixed size: "/Date(".length == 6 and ")/".length == 2.

Note: my original response assumed that the code was on the server side, in C#. Anyway, the solution would be the same:

string entrada = "/Date(1401731794773)/";
string conteudo = entrada.Substring(6, entrada.length-2);

Answer 2

With regular expressions one can do so:

var resultado = "/Date(1401731794773)/"

data = resultado.match(/[\d]+/);
console.log(data); // 1401731794773

The expression /[\d]+/ will make it only captured numbers.

It is also possible to be doing so:

var resultado = "/Date(1401731794773)/"

data = resultado.replace(/[^\d]+/g, "");
console.log(data); // 1401731794773

The expression /[^\d]+/g causes all non-numeric characters to be matched, in which case, Date() so simply make the exchange by calling the replace().

Answer 3

I resolved so:

var dtCadastro = data.agendamento.DataCadastro.substring(6, data.agendamento.DataCadastro.length - 2);
var dtAgendanmento = data.agendamento.DataAgendamento(6, data.agendamento.DataAgendamento.length - 2);
var dtVisita = data.agendamento.DataVisita(6, data.agendamento.DataVisita.length - 2);

Answer 4

The most efficient way in javascript is:

var val = "/Date(1402369200000)/";
var re = "/-?\d+/";
console.log(re.exec(val));

// output: ["1402369200000"]