Answers for "how to extract a string from a string javascript"

js get first 3 characters of string

const string = "0123456789";
console.log(string.slice(0, 2)); // "01"
console.log(string.slice(0, 8)); // "01234567"
console.log(string.slice(3, 7)); // "3456"

substring javascript

var str = "Hello world!";
var res = str.substring(1, 4); //ell