Regex to remove letters, symbols except numbers

Question

How can you remove letters, symbols such as ∞§¶•ªºº«≥≤÷ but leaving plain numbers 0-9, I want to be able to not allow letters or certain symbols in an input fie

Answer 1

Try the following regex:

var removedText = self.val().replace(/[^0-9]/, '');

This will match every character that is not (^) in the interval 0-9.

Demo.

Answer 2

Use /[^0-9.,]+/ if you want floats.

Answer 3

Simple:

var removedText = self.val().replace(/[^0-9]+/, '');

^ - means NOT

Answer 4

You can use \D which means non digits.

var removedText = self.val().replace(/\D+/g, '');

jsFiddle.

You could also use the HTML5 number input.

<input type="number" name="digit" />

jsFiddle.

Answer 5

If you want to keep only numbers then use /[^0-9]+/ instead of /[^a-zA-Z]+/