javascript string replace all

                                    const p = 'The quick brown fox jumps over the lazy dog. If the dog reacted, was it really lazy?';

console.log(p.replaceAll('dog', 'monkey'));
// expected output: "The quick brown fox jumps over the lazy monkey. If the monkey reacted, was it really lazy?"

// global flag required when calling replaceAll with regex
const regex = /Dog/ig;
console.log(p.replaceAll(regex, 'ferret'));
// expected output: "The quick brown fox jumps over the lazy ferret. If the ferret reacted, was it really lazy?"

                                    const p = 'The quick brown fox jumps over the lazy dog. If the dog reacted, was it really lazy?';

console.log(p.replaceAll('dog', 'monkey'));
// expected output: "The quick brown fox jumps over the lazy monkey. If the monkey reacted, was it really lazy?"

                                    var str = "JavaScript replace method test";
var res = str.replace("test", "success");  
//res = Javscript replace method success

                                    
// change echo with some else
// unique
let gelen.icerik="abc echo abc echo";
let bulunanlar = [...gelen.icerik.matchAll(/echo.*;/g)];
let bulunanlarDizisi = [];
for (const bulunan of bulunanlar) {
  bulunanlarDizisi.push(bulunan[0]);
  console.log(bulunan[0]);
}
bulunanlarDizisi = [...new Set(bulunanlarDizisi)]; // tekillestirildi
bulunanlarDizisi = bulunanlarDizisi.sort((x, y) => y.length - x.length); // uzundan kisaya
bulunanlarDizisi.forEach((bulunan) => {
  let bununla = bulunan + ` echo "\\n";`;
  gelen.icerik = gelen.icerik.split(bulunan).join(bununla);
});

                                    function replaceAll(string, search, replace) {
  return string.split(search).join(replace);
}
const output = replaceAll(Url, type, changeType);