My Solution[Easy One]

1

Continuing the discussion from freeCodeCamp Algorithm Challenge Guide: Search and Replace:


function myReplace(str, before, after) {
  var aftStr = after.split("");
  var bfrStr = before.split("");
  for(i=0;i<bfrStr.length;i++){
    if(bfrStr[i] ===  bfrStr[i].toUpperCase())
      aftStr[i] = aftStr[i].toUpperCase();
  }
  var afterString = aftStr.join("");
   var newString = str.replace(before,afterString);
  return newString;
  
}

myReplace("His name is Tom", "Tom", "john");