Receipt of part of the line found through regular expressions

[Kadyn]

I can't write a regular text. I will not consider other methods of searching the text. Because I want to study this method. Text:

Пользователь: ФИО - Иванов Иван Иванович
организация - ОАО "Мороженка"
здание - 111
комната - 111
телефон - 1-11-11
Другое
ПК № - 4550
на улице: 111,111,111.
Дата и время - 11:22 12.12.2012.

We need to find the PC number.4550) I kind of found a line. ПК № - 1017 regular

/(ПК № - )[0-9]{1,11}/g

I can't get the PC number myself.

[Analeea]

The fascinating underwear should be reduced to:

/ПК № - ([0-9]{1,11})/g
        ^           ^

I think the number of numbers after ПК № - You don't have to limit 11. May and + Use. But it's up to you.

I suggest that code:

var re = /ПК\s+№\s+-\s+([0-9]+)/g; 
var str = 'Пользователь: ФИО - Иванов Иван Иванович\nорганизация - ОАО "Мороженка"\nздание - 111\nкомната - 111\nтелефон - 1-11-11\nДругое\nПК № - 4550\nна улице: 111,111,111.\nДата и время - 11:22 12.12.2012.';
var m;
while ((m = re.exec(str)) !== null) {

document.getElementById("r").innerHTML += m[1];  // текст, захваченный подмаской №1

}

<div id="r"/>

Regular expression https://regex101.com/r/jC3lL4/1

• ПК\s+№\s+-\s+ - Here. \s+ Any gaps, 1 and more
• ([0-9]+) - 1 and more numerals are placed in captive No1.

If gaps are not necessary, i.e. if they may not be substituted \s+ ♪ \s*♪ Quantifier * means 0 or more♪