Opening Link to a New Tab Options

[Animation Sigmabear]

Hi guys, I am new to the forum

I am stuck with a certain part of our website and found this place looking for answers.

So my plan is quite simple, I need to click a link and it should open a new browser tab instead of loading it on the main tab.

I have watched multiple tutorials on Youtube. The code is very simple and it works. I applied it to my code:

CODE

<a onclick="window.open(location.href='vrdemo/vrdemohouse.html',target='_blank')">VR 360 tab test</a>
<a onclick="location.href='vrdemo/vrdemohouse.html'">VR 360</a>

1st link is the new test link. 2nd is the old one, where clicking it will load the page on the current tab.

The problem I have with the first one is, when I click, it opens a new tab BUT ALSO loads the page on the current. What am I getting wrong here?
The code and tutorials are so simple and straight forward I am lost at what I got wrong.