Answers for "javascript substing"

substring javascript

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

substr() javascript

const str = 'substr';

console.log(str.substr(1, 2)); // (1, 2): ub
console.log(str.substr(1)); // (1): ubstr

/* Percorrendo de trás para frente */
console.log(str.substr(-3, 2)); // (-3, 2): st
console.log(str.substr(-3)); // (-3): str

javascript substring

string.substring( start, end )

javascript substring

// zero-based index, 'end' is excluded from result
myString.substring( start, end )