I am making a script that allows me to perform operations to generate the total cost of the products:
var subtotal = 0;
var ivaValor = 0;
var total = 0;
selected.forEach(function(dato) {
var pretotal = dato.price * dato.quantity;
parseFloat(pretotal)
var total = total + pretotal;
});
console.log(total);
But total returns it to me as Not a number (NaN), at the moment I do not understand what happens since total is declaring int.
Note: I'm starting in JS:)
I could not make it show me NaN but I could notice that you are stating 2 variables total , one outside the foreach and another inside:
//...
var total = 0; // declaracion de variable total
selected.forEach(function(dato) {
var pretotal = dato.price * dato.quantity;
parseFloat(pretotal)
var total = total + pretotal; // otra vez declarando la variable total
});
console.log(total); // imprimes la variable total con el ambito global
Due to the last line I infer that you want to add the value of operations dato.price * dato.quantity; to variable total within foreach .
Eliminate the declaration of the total internal variable of forEach for the operation to work:
var selected = [
{
price : 44,
quantity: 2
},
{
price : 20,
quantity: 1
}
];
var subtotal = 0;
var ivaValor = 0;
var total = 0;
selected.forEach(function(dato) {
var pretotal = dato.price * dato.quantity;
parseFloat(pretotal)
total = total + pretotal;
});
console.log(total);