Ways to eliminate a character from the final element of an array

Looking to eliminate the final comma from a JavaScript array

var arr =  ["CCC,","DDD,"];

The desired outcome should be

var arr =  ["CCC,","DDD"];

Any assistance would be greatly valued...

Answer №1

let groceries =  ["Apples,","Bananas,"];

groceries[groceries.length - 1] = groceries[groceries.length - 1].replace(',', '');

console.log(groceries);

Answer №2

To easily remove a specific character from the end of an array element, you can utilize the replace() method in JavaScript like so:

var arr =  ["AAA,","BBB,"];

arr[arr.length-1] = arr[arr.length-1].replace(/\,/g,"");

console.log(arr)

Answer №3

Here's an alternative method:

let items =  ["apple", "banana",];
items.push(items.pop().replace(/,$/, ''));
console.log(items);

Answer №4

Here is a solution that demonstrates the use of regex to achieve the desired outcome:

>> var str = "BBB,"
>> str = str.replace(/,[^,]*$/ , "")
>> str
>> "BBB"

Answer №5

let newArray =  ["CCC,","DDD,"];
let finalElement = newArray[(newArray.length)-1].replace(',', '');
newArray.splice(((newArray.length)-1),1,finalElement);

Output :

["CCC,", "DDD"]

Answer №6

arr[arr.length-1] = arr[arr.length-1].substring(0, arr[arr.length-1].length - 1)

Answer №7

Utilizing the powerful capabilities of JavaScript's string split() method along with the Array splice() method.

EXAMPLE

var newArr = ["CCC,","DDD,"];

var lastEl = newArr[newArr.length-1];

var splitString =  lastEl.split(',');

var withoutComma = splitString[0];

newArr.splice(newArr.length-1);
newArr.push(withoutComma);

console.log(newArr);

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