substring javascript
var str = "Hello world!";
var res = str.substring(1, 4); //ellsubstring javascript
var str = "Hello world!";
var res = str.substring(1, 4); //ellsubstr() 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): strjavascript substring
string.substring( start, end )javascript substring
// zero-based index, 'end' is excluded from result
myString.substring( start, end )Copyright © 2021 Codeinu
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