Regular Expressions: Match Letters of the Alphabet problem

I have this code:

let quoteSample = "The quick brown fox jumps over the lazy dog.";
let alphabetRegex = /[a-z]/i; // Change this line
let result = quoteSample.match(alphabetRegex); // Change this line

I get errors:

Your regex alphabetRegex should match 35 items.

Cannot read property ‘length’ of null

Any ideas?

Cannot read property ‘length’ of null is a strange error for this code. Check which line has the error.

But, to match the whole sentence I think your regex should be:

let alphabetRegex = /[a-z]/gi;

Otherwise you are going to match just the first charactere.

Thanks for the reply. It works now.

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