window variable undefined in JavaScript

Question

I'm having a problem with a window level variable.

When I save data in that variable and try to read that data from it, it gives me undefined.

The following is the code:

window.cart;

function save(name, sku)
{
    window.cart = "sku: "+sku+", nombre: "+name;
};

function read()
{
    console.log(window.cart);
}

Window.cart is declared and value is not assigned to that and I don't see function save call in your script ,default value of variable in javascript is undefined — Naga Sai A
– Naga Sai A, Commented Oct 6, 2017 at 22:21

user8556290 · Accepted Answer · 2017-10-06 22:25:06Z

1

You need to call your function if you want to access to them and add a onload event to call this when windows body are loaded.

    function save(name, sku)
    {
        window.cart = "sku: "+sku+", nombre: "+name;
    };

    function read()
    {
        console.log(window.cart);
    }

    document.body.onload = function(){
     
      save(20, 'sku_new');
      read();
  
    }

answered Oct 6, 2017 at 22:25

user8556290

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1 Comment

Felix Kling Over a year ago

document.body.onload is completely unnecessary since the code doesn't access the DOM in any way.

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