How can I convert numbers in a String to Number Values?
I want users to be able to type numbers into a TextBox, and then use the Inputted numbers as number values rather than string values. How can I convert Strings into Numbers?
What I have now may work, but I realized that if the User inputs a non-numeric character the script will attempt to perform mathematics on a letter.
What I have so far:
if player.Coins.Value >= script.Parent.Parent.CoinConvert.Text then
if script.Parent.Parent.CoinConvert.Text/25 == 1 then
player.Coins.Value = player.Coins.Value - script.Parent.Parent.CoinConvert.Text
player.Points.Value = player.Points.Value + (script.Parent.Parent.CoinConverter.Text/25)
end
end
--This isn't the full script, just a portion of it.
--CoinConvert is the name of the TextBox.
Also, how can I check if the Text of a TextBox is changed? I would assume that the .Changed event doesn't work, as it only works on Values.
1 answer
Use the tonumber function.
tonumber() accepts one argument, the string you want to convert, and returns the number value. However, it will return nil if you don't give a string that is solely just numerals.
For example-
x = "Hello" y = tonumber(x) + 1 print(y)
Would return an error when you try to compare tonumber(x) to 1, because tonumber(x) is nil, and you can't compare nil with a value.
With the correct usage:
x = "123" y = tonumber(x) + 1 print(y)
... would print 124, as we wrote in the script.
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I hope you found this useful!
(also, you can do the exact opposite with the tostring function, which turns any value other than nil into a string)
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