How to put variables inside a Json Array function in JS

Question

I'm a beginner in Js and have a problem making a little program, I want to put the variables nome, document e Codigo, inside of the JSON array 'registros'

var registros = [];
var codigo = 1;
function salvar() {
    var nome = document.getElementById("pNome").innerText;
    var documento = document.getElementById("pDocumento").innerText;
    var registro = [{
        codigo: 0,
        nome: "",
        sexo: ""
    }];
    registro.push(codigo, nome, document);
}

You named your array registros but then tried to push into registro which is not an array but an object — Omkar76
– Omkar76, Commented Feb 10, 2021 at 18:12

mantovanigo · Accepted Answer · 2021-02-10 18:23:40Z

1

You need to do a little adjustment in the salvar() function. First, you can set each specific value of your "registro" var like this:

var registro = [{
    codigo: codigo, //value = 1
    nome: nome, //value = the innerText of document.getElementById("pNome")
    sexo: ""
}];

Then, you use the push() function to insert "registro" into your "registros" array. Here is the full updated code:

var registros = [];
var codigo = 1;
function salvar() {
    var nome = document.getElementById("pNome").innerText;
    var documento = document.getElementById("pDocumento").innerText;
    var registro = [{
        codigo: codigo,
        nome: nome,
        sexo: ""
    }];
    registros.push(registro);
}

answered Feb 10, 2021 at 18:23

mantovanigo

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Comments

Ritchid Amoah · Accepted Answer · 2021-02-10 18:56:45Z

Array in JS comes in property/ value structure, and from your code you are assigning the values to a different variable registro instead of registros.

Moreover, the registros variable is never user. To do this;

Create your array variable (registros)
Create a function (salvar)
Create an object that will hold your values, here nome in object will create a property name "nome" with the value being the value in nome which is document.get ...;
var obj = { "nome": document.getElementById("pNome").innerText.
Then push obj to array, registros

var registros = [];
var codigo = 1;
function salvar() {
    var nome = document.getElementById("pNome").innerText;
    var documento = document.getElementById("pDocumento").innerText;
    var obj = { nome, documento, caodigo}

    registros.push(obj);
}

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