Alpha Numeric Validation with a set character range | Experience Community
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Alpha Numeric Validation with a set character range

  • March 25, 2021
  • 4 replies
  • 338 views
S

Hello!
I'm trying to set up a regex validation between 6-7 characters that could be either numbers or letters, I was trying to work with this code:
[a-zA-Z0-9]{6,7}
But the code isn't validating, it's letting anything in. Can someone let me know what's wrong with the above?

Best answer by ahmedA

You are not enforcing a string length, therefore, even if the text is 100 chars long, as long as it had a sequence of 6 or 7 letters and numbers, it'll pass.
Add the start of and end of string tokens to get it to work: 

^[a-zA-Z0-9]{6,7}$

4 replies

A
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  • ahmedA
  • Level 7 ●●●●●●●
  • Answer
  • March 25, 2021

You are not enforcing a string length, therefore, even if the text is 100 chars long, as long as it had a sequence of 6 or 7 letters and numbers, it'll pass.
Add the start of and end of string tokens to get it to work: 

^[a-zA-Z0-9]{6,7}$

    S
    • Samantiks
    • Author
    • March 25, 2021

    https://www.qualtrics.com/community/discussion/comment/36022#Comment_36022Thank you so much, that seemed to do the trick! So putting ^ at the beginning and $ at the end is what's enforcing the {6,7}?

    A
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    • ahmedA
    • Level 7 ●●●●●●●
    • March 25, 2021

    Yes. You can read more and even tryout things here: regex101.com

      S
      • Samantiks
      • Author
      • March 25, 2021

      https://www.qualtrics.com/community/discussion/comment/36039#Comment_36039Perfect! Thank you so much for your help

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