Reference for regular expression methods

regExMethodReference.js

let re;
re = /hello/;
re = /hello/i; // i = case insensitive
// re = /hello/g; // Global search

// console.log(re);
// console.log(re.source);

// exec() - Return result in an array or null
// const result = re.exec(`hello world`);

// console.log(result);
// console.log(result[0]);
// console.log(result.index);
// console.log(result.input);

// test() - Returns true or false
// const result = re.test(`Hello`);

// console.log(result);

// match() = Return result array or null
// const str = `Hello There`;
// const result = str.match(re);
// console.log(result);

// search() - Return index of the first match. If not found, it returns -1
// const str = `Butler, Hello There`;
// const result = str.search(re);
// console.log(result);

// replace() - Return new string with some or all matches of a pattern
// const str = `Hello There`;
// const newStr = str.replace(re, `Hi`);
// console.log(newStr);