Regular Expressions - Reuse Patterns Using Capture Groups

Tell us what’s happening: i have most of the criteria ticked off exept one that says : Your regex should not match the string 42\t42\t42 .
how would i implement that change?

Your code so far

let repeatNum = "42 42 42";
let reRegex = /^(\d+)\s\1\s\1$/; // Change this line
let result = reRegex.test(repeatNum);

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Challenge: Regular Expressions - Reuse Patterns Using Capture Groups

Link to the challenge:

i have read through the hints but i just dont understand how to exclude the t42\t42

Try using a tool like and put your regex in there and tell me if you see anything that might also look for something you don’t want in the “explanation” in the upper right.

1 Like

Not OP but I was having that same problem, I solved it anyways, but I still wanted to know why it didn’t work how I first made it (which was very similar to OP), followed your instructions, the issue is that “\s” will capture any whitespace including \t so technically \t is considered a match for \s but the test wants you to restrict the results to an actual space and not just any whitespace.-

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