Regex to separate a string

You can use the following regular expression:

/([0-9]{2}\/[0-9]{2}\/[0-9]{4}) a ([0-9]{2}\/[0-9]{2}\/[0-9]{4})/g

This expression will look for 2 numbers, followed by slash, followed by 2 more numbers, followed by slash again and soon after, plus 4 numbers. After this you will search for String a and the same combination.

var texto = "02/10/2017 a 05/10/2017 em São Paulo - Papercut MF Técnico Presencial (28 hrs) - Vagas disponíveis";

console.log(separar(texto));

function separar(texto) {
  var regex = /([0-9]{2}\/[0-9]{2}\/[0-9]{4}) a ([0-9]{2}\/[0-9]{2}\/[0-9]{4})/g;
  var resultado = [];
  var combinacao = regex.exec(texto);
  
  resultado.push(combinacao[1]);
  resultado.push(combinacao[2]);
  
  return resultado;
}

I understand that you want to get a part of a string then ...

You can transform the string into an array by separating elements by spaces:

var teste = "02/10/2017 a 05/10/2017";
var arrayTeste = teste.split(' ');

This will return an array with 3 elements:

0- 02/10/2017

1- a

2-5 / 10/2017

You can get them separately:

arrayTeste[0];
arrayTeste[1];
arrayTeste[2];

If you want you can still use split ('/') to separate the day, month and year

Comments: The first element has the 0 position, the second the 1 position, and so on

Elements will no longer have the space () character because split clears it to separate elements from the array

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