Regex to remove letters, symbols except numbers

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 field but to leave numbers only.

Demo.

If you put any symbols like ¡ € # ¢ ∞ § ¶ • ª or else, it still does not remove it from the input field. How do you remove symbols too? The \w modifier does not work either.

Solution 1:

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.

Solution 2:

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