I have the following code which I try to add some objects to the array with two existing objects through a function but it always returns undefined and I don't know how to solve it.
let compte = {
iban: "ES79 2100 0813 6101 2345 6789",
saldo_inicial: 15000,
operacions: [{
quantitat: 1200,
concepte: 'X',
data_operacio: new Date(Date.now()),
}, {
quantitat: -100,
concepte: 'X',
data_operacio: new Date(Date.now()),
}],
afegir_operacio: function(quantitat, concepte, data_operacio) {
compte.operacions.push({
quantitat: quantitat,
concepte: concepte,
data_operacio: data_operacio
});
console.log(compte.operacions);
}
}
compte.afegir_operacio({
quantitat: -100,
concepte: "Factura",
data_operacio: "3-10-2021"
});
compte.afegir_operacio({
quantitat: -50,
concepte: "Compra"
});You get undefined because the data you're trying to add is not what you're passing to the function. Take a look at the corrections. When you do not pass a value for a given property, you'll get undefined for that property unless you define a default value:
let compte = {
iban: "ES79 2100 0813 6101 2345 6789",
saldo_inicial : 15000,
operacions: [{
quantitat: 1200,
concepte: 'X',
data_operacio: new Date(Date.now()),
}, {
quantitat: -100,
concepte: 'X',
data_operacio: new Date(Date.now()),
}],
afegir_operacio: function ({quantitat, concepte, data_operacio = "default_value"}) {
this.operacions.push({quantitat: quantitat, concepte: concepte, data_operacio: data_operacio});
console.log(this.operacions);
}
}
compte.afegir_operacio({ quantitat: -100 , concepte: "Factura", data_operacio: "3-10-2021" });
compte.afegir_operacio({ quantitat: -50, concepte: "Compra" });