regex replace last occurance of number in between 2 chars javascript

I am trying to replace the last number of each match in between parenthasees.

so if i had cos(3 * 3)

before this regex

result = result.replace(/\d+(?:\.\d+)?/g, x => `${x}deg`)

would turn cos(3 * 3) into cos(3deg * 3deg) I need only the last number to be changed to deg so if I had cos(3 * 3) + cos(3 * 2) it would be cos(3 * 3deg) + cos(3 * 2deg)

what regular expression magic could I use to do this.

>Solution :

You can simply use the closing braces to replace like this:

var result = "cos(3 * 3) + cos(3 * 245)"

result = result.replace(/(\d+)(\))/g,'$1deg)')

console.log(result)

Or just replace the last bracket.

var result = "cos(3 * 90) + sin(3 * 2)"

result = result.replace(/\)/g,'deg)')

console.log(result)

With Decimal add a character class using [] for . and digits

var result = "cos(3 * 3.4) + cos(3 * 245.5)"

result = result.replace(/([\d\.]+)(\))/g,'$1deg)')

console.log(result)