ranges_regex.js

let string = "Anish is a student with alma better. So is Subrojyoti";
let pattern = /[a-z]/g
// [a-z] means any character from a to z
// [A-Z] means any character from A to Z
// [0-9] means any character from 0 to 9
console.log(string.match(pattern));

let stringNew = "My age is 23. I was born in 1997";
let patternNew = /[0-9]/g
// [0-9] is a range that matches any character from 0 to 9

console.log(stringNew.match(patternNew));