Why can't I open a link without http or https using window.open() in Javascript? [duplicate]

Question

I can click "Open 1" button to open a full link in a new tab in Chrome.

When I click "Open 2" button, I can't open a the link without http or https, the browser URL address displays http://localhost:53484/www.google.com.

How can I fix it?

Code A

<html>
<head>
    <script src="Js/jquery-3.6.3.min.js"></script>

    <script type="text/javascript">

        function open1() {
            window.open('http://www.google.com')
        }

        function open2() {
            window.open('www.google.com')
        }
    </script>
</head>

<body>

    <input type=button value="Open 1" onclick="open1()">

    <input type=button value="Open 2" onclick="open2()">

</body>

</html>

I think it has answers here stackoverflow.com/questions/29684740/… — Damzaky
– Damzaky, Commented Dec 30, 2022 at 1:23

Johannes · Accepted Answer · 2022-12-30 01:22:34Z

1

http or https are needed to open an external link (i.e. to access any website in the world wide web) – it won't ever work without this, this is the official protocol. So if you have a link without it, every browser will automatically add it.

answered Dec 30, 2022 at 1:22

Johannes

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2 Comments

HelloCW Over a year ago

Thanks! But the browser add http://localhost:53484 before www.google.com

Spectric Over a year ago

@HelloCW the browser is assuming you're trying to open a relative path. Using http* will tell it that you are opening an absolute one.

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