1const p = 'The quick brown fox jumps over the lazy dog. If the dog reacted, was it really lazy?';
2
3console.log(p.replaceAll('dog', 'monkey'));
4// expected output: "The quick brown fox jumps over the lazy monkey. If the monkey reacted, was it really lazy?"

1const p = 'The quick brown fox jumps over the lazy dog. If the dog reacted, was it really lazy?';
2
3console.log(p.replaceAll('dog', 'monkey'));
4// expected output: "The quick brown fox jumps over the lazy monkey. If the monkey reacted, was it really lazy?"
5
6// global flag required when calling replaceAll with regex
7const regex = /Dog/ig;
8console.log(p.replaceAll(regex, 'ferret'));
9// expected output: "The quick brown fox jumps over the lazy ferret. If the ferret reacted, was it really lazy?"
10

1var res = str.replace("find", "replace");

1const p = 'The quick brown fox jumps over the lazy dog. If the dog reacted, was it really lazy?';
2
3console.log(p.replaceAll('dog', 'monkey'));
4
5// expected output: "The quick brown fox jumps over the lazy monkey. If the monkey reacted, was it really lazy?"
6
7
8
9

1function replaceAll(str, find, replace) {
2    var escapedFind=find.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1");
3    return str.replace(new RegExp(escapedFind, 'g'), replace);
4}
5//usage example
6var sentence="How many shots did Bill take last night? That Bill is so crazy!";
7var blameSusan=replaceAll(sentence,"Bill","Susan"); 

1let a = 'a a a a aaaa aa a a';
2a.replace(/aa/g, 'bb');
3// => "a a a a bbbb bb a a"