Check if number is a decimal

[FractalVortex]

I’m creating a TextBox UI element which allowed the player to change the transparency of a part. However, it isn’t working as intended. I believe this is due to the “.” in decimals such as “0.5” The script checks to make sure the string is a number. I think it might be reading the “.” as a string period instead of a numeric dot. (I could be wrong about this)

• Must ensure the input is between 0 and 1
• Must ensure the input is a number

local LocalPlayer = game:GetService("Players").LocalPlayer
local inputBox = script.Parent.InputBox

local function changeTransparency()

	local userInput = inputBox.Text

	local isInteger = tonumber(userInput) ~= nil and math.floor(tonumber(userInput)) == tonumber(userInput)
	local isValidDecimal = tonumber(userInput) ~= nil and tonumber(userInput) >= 0 and tonumber(userInput) <= 1
	
	if isInteger and isValidDecimal then
		print("Success!")
	else
		print("Fail!")
	end
end

inputBox.FocusLost:Connect(changeTransparency)

0 and 1 both print “Success!”
Every other number such as 0.5 or 0.2 prints “Fail!” Any ideas?

[neweve2323 (block)]

@FractalVortex

math.floor(tonumber(userInput)) == tonumber(userInput)

You are rounding the number and checking if it’s an integer or not. Removing isInteger should work.

[bookgamery555gta]

Correct me if im wrong. But you can try using this
local wantednumberstocheck = 0.2
if math.floor(wantednumberstocheck) == wantednumberstocheck then

–if we were to make wantednumberstocheck equals to 2 and we math.floor them. It would still return 2
since its decimal are 0. Therefore, if math.floor of numbers to check is equal to itself. Then the number is a Interger

print(“Interger”)
else

  --since math.floor of this number is 0. It is cleary that these number do not match. There for you can know that this number is a decimal

print(“Decimal”)
end