Question

Ok, when write like below:

var element = { "name": "" };

var array = [];

for (var i = 0; i < 2; ++i) {
    var newelement = element;
    newelement.name = i.toString();
    array[i] = newelement;
}    

Result in:array[0].name == array[1].name == “1”.
But write in another way:

var element = { "name": "" };

var array = [];

for (var i = 0; i < 2; ++i) {
    var newelement = { "name": i.toString() };
    array[i] = newelement;
}

Result in:array[0].name == “0” and array[1].name == “1”.

Tell me why.

Answer 1

Because in the second example you are creating a new object on each iteration, but in the first example you are referencing always the same element.