How would i make a large number have commas?

DalekAndrew99 · November 9, 2019, 2:31am

So what i’m trying to do is get a number like 10000 to look like 10,000.
It seems pretty simple but i have no idea how to do it.
Maybe just code it to do that?

All help is appreciated.

NuclearTheNoob · November 9, 2019, 2:40am

Take a look at this. The page has a list of functions that do stuff like this. Here is the function it lists for adding commas to functions.

function comma_value(amount)
  local formatted = amount
  while true do  
    formatted, k = string.gsub(formatted, "^(-?%d+)(%d%d%d)", '%1,%2')
    if (k==0) then
      break
    end
  end
  return formatted
end

PandaPb · November 9, 2019, 2:52am

I think this belongs more in the scripting support category.

gillern · November 9, 2019, 3:35am

Varsitelle · October 2, 2020, 11:45pm

I tried this function but there seems to be an error with k. The function didn’t work.

bellaouzo · November 6, 2020, 3:25am

Uh seems to work fine for me. Here is an example with the correct result.

function comma_value(amount)
	local formatted = amount
	while true do  
		formatted, k = string.gsub(formatted, "^(-?%d+)(%d%d%d)", '%1,%2')
		if (k==0) then
			break
		end
	end
	return formatted
end

local NumberWithCommas = 1000000

print(comma_value(NumberWithCommas))

superman990088 · March 2, 2021, 8:57pm

Hey, you able to explain how the function works? I’m not sure what the “^(-?%d+)(%d%d%d)” part means

bellaouzo · March 4, 2021, 2:53am

I don’t know too much about it, I just took the code from the guy who made the function and made it work. I am about where you are with it not knowing exactly what it does. I know it does have to do with String Pattern, so I would say maybe look at the wiki for deep info about it. I tried looking at it so I could explain it but it would take me a bit to fully understand and be able to explain it to someone else. Here is the Wiki for String Patterns Strings | Documentation - Roblox Creator Hub

Bitterman1021 · July 13, 2021, 3:38am

Thank’s to both of you for this! I’m going to make a wallet system for my friends game that I’m helping to develop and I needed a Gui that displays the players coins but with commas as a replacement of the leaderboard on the players list.

XayVoid · September 18, 2022, 8:55pm

Hi Dev,

We use an “IntValue” to detect values that we want, but when we want real numbers with numbers and much more, it is very difficult to find, so I made a basic script just to show how to use commas in these types of cases

When the value is more than 3 digits it will put a virulgas after the 1 or 2 number, so this script below:

Add a TextLabel, and then a LocalScript and add this script inside

local RunService = game:GetService("RunService")
local LocalPlayer = game:GetService("Players").LocalPlayer
local Cash = LocalPlayer.Cash --Detect "IntValue" (Real Money)
local Text = script.Parent 

local IsType = (function (T)
	T = tostring(T)
	return T:reverse():gsub("%d%d%d", "%1,"):reverse():gsub("^,", "")
end)

RunService.RenderStepped:Connect(function()
	Text.Text = "$: " .. IsType(Cash.value) -- Texto % Value
end)```

CoostIer · November 9, 2022, 2:43am

What does that do? specifically the return T:reverse():gsub("%d%d%d", "%1, "):reverse():gsub("^,", "")

ketrab2004 · November 9, 2022, 9:16pm

local IsType = (function (T)
    -- converts 1234567890 to "1234567890"
	T = tostring(T)

	return T
        -- converts "123456789" to "987654321"
        :reverse()

        -- replaces every 3 digits with the captured string (the 3 digits) + a comma
        -- so "321" becomes "321,", "654321" "654,321," and "987654321" "987,654,321,"
        :gsub("%d%d%d", "%1,")

        -- converts "987,654,321," to ",123,456,789"
        :reverse()

        -- replaces the comma at the start of the string with nothing
        -- ",123,456,789" to "123,456,789"
        :gsub("^,", "")
end)