Opening a Url in a New Tab

How to open link in a new tab in HTML?

Set the target attribute of the link to _blank:

<a href="#" target="_blank" rel="noopener noreferrer">Link</a>

For other examples, see here: http://www.w3schools.com/tags/att_a_target.asp

Note

I previously suggested blank instead of _blank because, if used, it'll open a new tab and then use the same tab if the link is clicked again. However, this is only because, as GolezTrol pointed out, it refers to the name a of a frame/window, which would be set and used when the link is pressed again to open it in the same tab.

Security Consideration!

The rel="noopener noreferrer" is to prevent the newly opened tab from being able to modify the original tab maliciously. For more information about this vulnerability read the following articles:

The target="_blank" vulnerability by example
External Links using target='_blank'

Open link in new tab or window

You should add the target="_blank" and rel="noopener noreferrer" in the anchor tag.

For example:

<a target="_blank" rel="noopener noreferrer" href="http://your_url_here.html">Link</a>

Adding rel="noopener noreferrer" is not mandatory, but it's a recommended security measure. More information can be found in the links below.

Source:

MDN | HTML element <a> | attribute target
About rel=noopener
Opens External Anchors Using rel="noopener"

How to open link in new tab in same group in chrome from code?

It should work if you set the target attribute to _blank, which tells the browser to open the link in a new tab/window, depending on the browser's settings.
I tried to open a link from a website that was in a chrome tab group and the new open tab was then in the same tab group by default.

If you do that don't forget to add the rel attribute set to noreferrer noopener to prevent possible malicious attacks from the pages you link to.

Here is an example from freecodecamp.org:

<p>Check out <a href="https://www.freecodecamp.org/" target="_blank" rel="noopener noreferrer">freeCodeCamp</a>.</p>

Here is the link to that tutorial from freecodecamp.

Open a URL in a new tab (and not a new window)

Nothing an author can do can choose to open in a new tab instead of a new window; it is a user preference. (Note that the default user preference in most browsers is for new tabs, so a trivial test on a browser where that preference hasn't been changed will not demonstrate this.)

CSS3 proposed target-new, but the specification was abandoned.

The reverse is not true; by specifying certain window features for the window in the third argument of window.open(), you can trigger a new window when the preference is for tabs.

Javascript - Open a given URL in a new tab by clicking a button

Use this:

<input type="button" value="button name" onclick="window.open('http://www.website.com/page')" />

Worked for me and it will open an actual new 'popup' window rather than a new full browser or tab. You can also add variables to it to stop it from showing specific browser traits as follows:

onclick="window.open(this.href,'popUpWindow','height=400,width=600,left=10,top=10,,scrollbars=yes,menubar=no'); return false;"

How to open a page in new tab in flutter web?

import 'package:universal_html/html.dart' as html;

 static openNewTab({String setUrl, String setTitle}) {
    return html.window.open(
      setUrl,
      setTitle,
    );
  }