How can I make a Number and Letters only TextBox

Help and Feedback Scripting Support
#1

Hey so I’m trying to to create a textbox where you can only type Numbers and letters. How can I do this efficiently? Thanks, Sorry for a short post.

#2

Use TextBox:GetPropertyChangedSignal('Text').

TextBox:GetPropertyChangedSignal('Text'):Connect(function() --// every time the text will change, it will filter the punctuation characters
	TextBox.Text = TextBox.Text:gsub('%p+', '');
);

Patterns you can filter. I used %p which stands for punctuation characters.

2 Likes
#3

why is the plus needed? I am trying to make it only allow lowercase letters so i wanna know what the + means

#4

More info about String Patterns you can find here.

Here’s the explanation for the plus. If you don’t use that plus, it will only match one word/character.
image

Edit: in our case, it’s not needed, you’re right. However, if you want to match more complex strings, you have to use it (in most cases).

#5

If you want to make it only lowercase, add a :lower().

TextBox.Text = TextBox.Text:lower():gsub('%p+', '');