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✓ ANSWER ACCEPTED

How can I convert numbers in a String to Number Values?

Asked 449 views1 answers

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.

AnonymousEdited

1 answer

✓ Accepted 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.

__________________________________________________

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)

AnonymousEdited Permalink

1 comment

0

Thanks!

Anonymous#

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