JAVASCRIPT

javascript replace last character

var str1 = "Notion,Data,Identity,".replace(/.$/,".")

javascript replace last occurrence of a letter

String.prototype.replaceLast = function (search, replace) {
    return this.replace(new RegExp(search+"([^"+search+"]*)$"), replace+"$1");
}

str = "lala";
newStr = str.replaceLast("l", "m");
console.log(newStr);

js replace last occurrence of string

str = str.replace(new RegExp(list[i] + '$'), 'finish');