Limit TextBox input to numbers?
Is there a way I can only allow numbers 0-9 to be put into a GUI TextBox and to then put those numbers into a IntValue instance? I've tried my self, without limiting what can be put in the box (As I don't know how this would be done) and it still does not work.
while true do wait()
script.Parent.Value = script.Parent.Parent.Text
end
I'm probably going completely wrong here, But I have no idea of how this would be done x3
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1 answer
Although creative, that method will just cause an error. Even if you type in a number, it's still a string (yes, "5" is a string), and IntValues error if you try to give them strings.
A common method is to use the tonumber function. This function attempts to convert a string into a number, and then return that number. If the string isn't an actual number, then it just returns nil.
print(tonumber("5")) --> 5
print(tonumber("Hello world!")) --nil
It is usually sufficient to just check when you get the input if it's a number or not;
if tonumber(textBox.Text) then
Although you could just directly not allow any non-number input;
if not tonumber(textBox.Text) then
textBox.Text = ""
end
On a side note, don't use while loops like you're doing. It's much better to use events, such as Changed, for efficiency purposes.
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