RegEx for matching "A-Z, a-z, 0-9, _" and "."

user_140937 0
Viewed 248433

I need a regex which will allow only A-Z, a-z, 0-9, the _ character, and dot (.) in the input.

I tried:

[A-Za-z0-9_.]

But, it did not work. How can I fix it?

regex
6 Answers

You could simply use ^[\w.]+ to match A-Z, a-z, 0-9 and _

user_47508400

regex: /^[a-zA-Z0-9_.]$/i

This works

user_114253850

For me, i was looking for a regex like Gmail has, should allow a-z, A-z, 0-9, _, . only here is the Yup format for it i used:

Email: Yup.string()
      .email("Please Provide Valid Email")
      .matches(
        /^\w+([.-]?\w+)*@\w+([.-]?\w+)*(.\w{2,3})+$/,
        "Only a-z A-Z _ . 0-9 are allowed in this Field"
       )
user_117435880
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