how to match and extract a regex from text in javascript

index.tsx
const text = "The quick brown fox jumps over the lazy dog";
const regex = /brown/;
const found = text.match(regex);
console.log(found); // ["brown"]
149 chars
5 lines

index.tsx
const text = "The quick brown fox jumps over the lazy dog";
const regex = /brown/;
let found;
while (found = regex.exec(text)) {
  console.log(`Found ${found[0]} at index ${found.index}`);
}
191 chars
7 lines

index.tsx
Found brown at index 10
24 chars
2 lines

index.tsx
const text = "My phone number is (123) 456-7890";
const regex = /\((\d{3})\)\s(\d{3})-(\d{4})/;
const found = text.match(regex);
console.log(found); // ["(123) 456-7890", "123", "456", "7890"]
193 chars
5 lines