How to match strings of the form "exclude=1" using regular expression?

Question

I want to use a regular expression to match strings of the form exclude=1 where the number should be in the range of 1 to 15.

I've tried: str.match("/exclude\=[1-9]|exclude\=1[0-5]/")

but it does not work.

Thank you!

`.match` should accept a regular expression, not a string. If you pass a string containing `/`s, literal `/`s will be matched, which is not what you want here. Use a regex literal instead — CertainPerformance, Jul 26 '19 at 07:49
do you want to extract the part or just to check the string? — Nina Scholz, Jul 26 '19 at 07:54

Nina Scholz · Accepted Answer · 2019-07-26T07:58:50.913

1

You took a string,

str.match("/exclude\=[1-9]|exclude\=1[0-5]/")
          ^                                ^

but you need to remove the quotes for a regular expression and take a start and end sign into the expression.

const test = s => s.match(/^exclude=([1-9]|1[0-5])$/);

console.log(['', 'exclude=1', 'exclude=15', 'exclude=153'].map(test));

edited Jul 26 '19 at 07:58

answered Jul 26 '19 at 07:49

Nina Scholz

1 Answers1