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JavaScript Regular Expressions in JavaScript Validating a Form Validating an Email

Posted by <noob />
<noob />
17,062 Points

What is + means on regex? can't understabd

what is [a-z]+ for exmaple means? is it like saying that it can be multiple times a letter?

1 Answer

Zimri Leijen
Zimri Leijen
11,835 Points

that means it looks for 1 or more occurrences of a letter in the range of a-z.

so any lowercase word will trigger it.

This is a good tool for helping understand regex https://regexr.com/

to be more specific, whatever search term is directly in front of the + symbol will need to be matched 1 or more times.

<noob />
<noob />
17,062 Points

Thank you very much sir.

Sean T. Unwin
Sean T. Unwin
28,690 Points
Sean T. Unwin
Sean T. Unwin
28,690 Points

RegEx Pal is another good place to experiment/test Regular Expressions.