javascript find replace regex code example

Example 1: replace all occurrences of a string in javascript

const p = 'dog dog cat rat';

const regex = /dog/gi;

console.log(p.replace(regex, 'cow'));
//if pattern is regular expression all matches will be replaced
//output: "cow cow cat rat"

Example 2: replace javascript

let randomtext = "Random text yo!"
let textRegex = /yo!/;
randomtext.replace(textRegex, "is here.");
console.log(randomtext.replace(textRegex, "is here."));
// Returns Random text is here.