What is wrong with this Javascript? shopping cart

Question

There is something in this javascript or html which is is allowing the checkboxes to be ticked but for not even half a second. (I need the checks to stay there!) I also need the

Answer 1

Your JS syntax is way off, this is what it should look like

function addItems(field) {
    for (i = 0; i <= field.length-1; i++) 
    {
        if (field[i].checked == true)
        {
            if (computer[i]!=null) { 
                selected[i] = computer[i];
            }
        }
    }
}