Positive and negative Lookahead challenge problem

Tell us what’s happening:

I was trying a lot of combinations, but whenever i change the lookaheads in the tests always keep exchanging the correct code for 8pass99 and 12abcde for bana12 and abc123, i don’t know what i’m doing wrong.
Can someone help me understand what’s wrong?

Your code so far

let sampleWord = "astronaut";
let pwRegex = /(?=\D*\w{6,})(?=\D*\d{2,})/; // Change this line
let result = pwRegex.test(sampleWord);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0.

Challenge: Positive and Negative Lookahead

Link to the challenge:

Hi @laboon2077!

One of the requirements for this challenge was to create a regex that does not begin with numbers . So you need to add that symbol to your regex.

Also, there is a great tool you can use where you can test out your regex and it will provide you with detailed explanations of what is happening. Like a debugger.

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That is indeed an awesome site. Thanks for the tip.

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\D* at the start of the first regex doesn’t cover that?

You need to add the starts with symbol

i added ^, but still doesn’t work

Can I see your updated code?


Try moving this part out of the lookahead. Try putting it in front of the lookahead instead.


Also have you tried rewriting this part


Like this


You are really close.

I tried, but still doesn’t work

I tinkered with the code and when I rewrote this last part

// change this 
\D *
// to this 

it passes for me.


matches any word character (equal to [a-zA-Z0-9_])

Sorry for being so annoying
the code right now it’s like this:


And now it only trows one test error: Your regex should not match "8pass99"
all the other tests are okay

Sorry I should have been clearer.

This post here

Was referring to the end not the beginning.

Sorry for my poor communication. So if you left it the way it was where ^D\* was at the beginning then you only have to change this part \D+ to this \w*

Hope that makes sense.

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Thank you so much, i was stuck for hours

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Awesome! Congrats!

Regex is weird and was confusing for me too. :smile:
I would definitely bookmark that regex 101 site because you will need it for the telephone validator project at the end. It helped me out alot.

Happy coding!

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