JSFiddle - React, Tailwind, and code Playground

by shapeshifta

JavaScript

//replacement === input -> DBaaabbbb
var input = 'DBaaa';
var replacement = 'Dbaaabbbb';
var result = '';

if(input.toLowerCase() === replacement.substring(0, input.length).toLowerCase()){
    result = input + replacement.substring(input.length);
}
console.log(result);