Firefox: Open Links to Children Tabs (work for all versions)

With Tree Style Tab extension installed, I was able to open links to new children tabs. The version of Firefox I was using then was 38.

Unfortunately, this function won't work anymore after the Firefox upgrading to version 42. When I clicked on a link while doing search, it opened in the tab itself instead of switching to a child tab.

Tabs are very useful especially when we do a lot of search work on the browser, and the Tree Style Tab will help greatly. Tabs browsing enables us to easily organize pages. Tabs can be moved in Firefox, so we can rearrange the pages based on their importance.

After some research on the Internet, I found the solution:

Solution 1:

Hold down "Ctrl" and click a link to open it in a new tab.

Solution 2:

Make Firefox automatically switch to newly opened tabs by opening the "Options" window, clicking "General" and then enabling the "When I open a link in a new tab, switch to it immediately" option.

If the solution 2 not working and you want  open link in new tab automatically, go to

solution 3:

Step 1: Type "about:config" in the URL bar and enter, accept the warning message.

Step 2: Search "browser.search.openintab" and double click on the result to change the value from "false" to "true"

Step 3: Search "browser.link.open_newwindow", change the value from 3 (as usually) to 1.

Step 4: Restart the browser and you should be able to open links to new tabs now.

If solution 4 still not working, then you have to install addon:
Open Link in New Tab
https://addons.mozilla.org/en-US/firefox/addon/open-link-in-new-tab/?src=search

Above are all the solution I have that work for me. Hope you can solve your problem too.