Extracting numbers from a string using regular expressions

Question

I am clueless about regular expressions, but I know that they\'re the right tool for what I\'m trying to do here: I\'m trying to extract a numerical value from a string like thi

Answer 1

mystr.match(/assignment_group=([^\^]+)/)[1]; //=> "12345678901234567890123456789012"

This will find everything from the end of "assignment_group=" up to the next caret ^ symbol.

Answer 2

This will get all the numbers:

var myValue = /\d+/.exec(myString)

Answer 3

If there is no chance of there being numbers anywhere but when you need them, you could just do:

\d+

the \d matches digits, and the + says "match any number of whatever this follows"

Answer 4

Try something like this:

/\^assignment_group=(\d*)\^/

This will get the number for assignment_group.

var str = 'approval=not requested^assignment_group=12345678901234567890123456789012^category=Test^contact_type=phone^',
    regex = /\^assignment_group=(\d*)\^/,
    matches = str.match(regex),
    id = matches !== null ? matches[1] : '';
console.log(id);