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): strremover ultimo character string javascript
var texto = $("#input_id").val();
$("#input_id").val(texto.substring(0, texto.length - 1));Copyright © 2021 Codeinu
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