CODEWITHSUNDEEP
javascriptregex
Puneet Chawla
Puneet Chawla

Reputation: 6009

Compare length of string in regex javascript

I don't have much knowledge about working of regex but I have been trying to solve this from last many hours but could not get solution of it`.

regex  /^[]{13,17}$/i

I have a text-box and text-box value should be greater than or equal to 13 and less than or equal to 17.

Ex. 

var value - "12345678901234".(textbox value and length is 14)
if (value.match(regex)) {
  alert("Correct value");
} else {
  alert("error");
}

Now, length is 14, it means condition should be true. But match function always return null. I have tried also test function, but it doesn't give desired result.

Upvotes: 1

Views: 3288

Answers (1)

MaxP
MaxP

Reputation: 3044

You should specify which kind of characters has to be in the sequence:

Any character-

/^.{13,17}$/i

Digits -

/^[0-9]{13,17}$/i

Letters -

/^[A-Z]{13,17}$/i

letters, digits, underscore and dash -

/^[A-Z0-9_-]{13,17}$/i

Upvotes: 3

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