Regex to retrieve numbers from string

Question

I have this string:

var string = "look1_slide2";

I would like to extract the the look number ie 1 and the slide ie 2 and save them in two different variables, I guess I could do it with a Regex but not sure how. Any help? The string will always have that format btw

Thanks!

• Tushar: What have you tried? it's very simple var numbers = string.match(/\d+/g); Check Demo
• Hacketo: possible duplicate of how to find a number in a string using javascript
• Wiktor Stribiżew: I guess the main problem here is not the regex but variable assignment, right?
• user1937021: well yes, but I think I still need to use a hash so the page is bookmarkable.
• Wiktor Stribiżew: Check this demo.

Answer 1

Since your string is always in that format you can simply read second and third entries of the returned regex matches array :

var string = 'look1_slide2';
var regex = /look(\d)_slide(\d)/g;
matches = regex.exec(string);
console.log(matches[1]);
console.log(matches[2]);

See RegExp.exec() doc

• Wiktor Stribiżew: If OP does not need to return multiple matches with captured groups, why use exec? I think match is enough here (without g modifier).

Answer 2

var txt = "#div-name-1234-characteristic:561613213213";
var numb = txt.match(/\d/g);
numb = numb.join("");
alert (numb);​

This will print 1234561613213213

• user1937021: Hi, thanks, but how can I save them both in two different variables?
• I-Kod: The thing is how your number is represented? if your string pattern is look1_look2 then you can easily know that after '1' there is special character means no other number. You can differentiate numbers with this logic. 1 followed by '_' means 1 is alone and 2 followed by null character means 2 is alone save it with different variables. i.e Check the end of each number if next character is not number save into variable.