regex only detects illegal characters at end of string

Asked Oct 31 '16 at 13:20

Active Oct 31 '16 at 13:20

Viewed 22 times

I'm using regex in Javascript to verify that an entry in a textbox only contains legal characters. My expression is:

/[a-zA-Z0-9._%+@-]$/.test(value)

This correctly identifies cases like "~~~" or "4389sdf~~~", but if there are any legal characters following, such as "~~~bvv" then it gets a pass.

How can I fix this?

asked Oct 31 '16 at 13:20

Nicholas Hassan

2

The `$` at the end of the regular expression explicitly means, "match at the end of the string". – Pointy Oct 31 '16 at 13:21
1

..Or `/^[a-zA-Z0-9._%+@-]+$/` if you want *at least one* symbol – Dmitry Bychenko Oct 31 '16 at 13:23
1

If these `a-zA-Z0-9._%+@-` chars are *allowed*, you need `/^[a-zA-Z0-9._%+@-]*$/` or `/^[a-z0-9._%+@-]*$/i`. – Wiktor Stribiżew Oct 31 '16 at 13:24

0 Answers0