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Javascript to reload a new tab page

window.open("http://google.com", '_blank');
var childWindow = "http://google.com";
childWindow.location.href = "http://google.com";
I have an eventAddListener that loads http://google.com on a new tab with a button press, but right after it opens the new tab of google.com, I want it to REFRESH again. NOT my base page but the NEW tab page, by itself. The code I showed is just one of the examples out of 5 pages worth of google search which don't work.
UPDATE:
var win = window.open('google.com', 'New Window'); setTimeout(function () { var win = window.open('google.com', 'New Window'); },3000);
This is the best i could come up with. It opens new tab and "Reloads" the new tab rather than refresh it.
What I want is for example, you click on new tab, you paste a link then press enter, which EXECUTES the link. I basically want a javascript function which EXECUTES the link.

You can't do this.
In order to trigger a reload in the new tab/window you need to run JS in that tab/window.
The same origin policy prevents this.
If you had control over the new page then you could have an event listener running in it and post a message asking that listener to trigger a refresh.
Obviously you can't do that with Google's page.
This question, however, reads like an XY problem. If the goal is to display fresh (and not old, cached, out of date) information and the target page is not a third party one then you shouldn't be using JS to hack your way around caching. Instead set better caching rules on the target page in the first place.

I worked on something similar in the past few weeks and the code below worked for me.
index.html
<button onclick="openTab()">New Tab</button>
<script>
function openTab(){
//this opens a new tab while creating a variable name for that tab
var newTab = window.open("https://google.com","_blank");
//this refreshes that new tab
newTab.location.reload();
}
</script>
Just to prove that this works on the new tab I used the code
<script>
function openTab(){
//this opens a new tab while creating a variable name for that tab
var newTab = window.open("https://google.com","_blank");
//this will alert in the new tab
newTab.alert("New Tab");
//before the following reload code takes effect
//this refreshes that new tab
newTab.location.reload();
}
</script>
Hopefully that's what you are looking for.

From my understanding you want the new tab to refresh once opened with JavaScript instead of the current tab where you run the JavaScript code from.
That's not directly possible. The JavaScript code will only run for the tab it was executed in. The newly opened tab does not know that JavaScript code should be running. The current tab cannot pass over instructions for the new tab to execute.
However, you can select the newly opened tab manually first and then execute Javascript code to refresh the page. But that probably defeats the purpose of what you're trying to do.

Enable "open in new tab/window" in right click

My links are javascript functions which show a loader, then navigate to the target link:
<script>
function go(url) {
document.body.innerHTML = "some loader html";
window.location = url;
}
</script>
Click here
However this link wouldn't work when the user right clicks it and wants to navigate to test.php in a new tab.
I want the link also to function when the user wants to open it in a new tab/window. Is there a javascript/jquery way I can achieve this?
Thanks

Your links should be links, not JavaScript functions. Their primary purpose is navigation. You can add the extra behavior later, in a click handler:
document.body.addEventListener('click', evt => {
const link = evt.target.closest('a.use-loader');
if (!link) return;
evt.preventDefault();
document.body.innerHTML = '<h1 style="color:red">LOADING</h1>';
window.location.href = link.href;
});
<a href="https://example.com" class="use-loader">
This loads <em>really slow</em>, and it's my responsibility to fix that.
</a>
<br>
This one, too.
Or with jQuery:
$('body').on('click', 'a.use-loader', function () {
document.body.innerHTML = '<h1 style="color:red">LOADING</h1>';
window.location.href = $(this).attr('href');
return false;
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<a href="https://example.com" class="use-loader">
This loads <em>really slow</em>, and it's my responsibility to fix that.
</a>
<br>
This one, too.
This way, the links still work for any agent that isn't running JavaScript, including browsers opening new tabs and users running NoScript.

Firstly, "My links are javascript functions which show a loader, then navigate to the target link" sounds like bad design decision.
To answer your question...
window.open('test.php', '_blank');
the second parameter will be the name of the target window
see How to simulate target="_blank" in JavaScript
The only way to get a right click 'open in a new window' is to have your tag like this
Click here
I highly recommend that you do not open the link using javascript, this is usally bad practice and you will most likely run into popup blocker issues.
I would do this personally
Click here
Maybe this "loader" you want to show is supposed to imitate an AJAX loading approach where you load new HTML and insert it into your page without causing an actual page reload
you might be interested in this
How do I load the ajax data into a div with jquery?

Javascript Window.Open Opens the Target URL in Both a New Window and the Same

Basically, I have a page with social media share buttons. Some of them work as they should (they open up in a new window), however, others open up both in a new window and in the same window. I have been going crazy for a day now over this and I cannot seem to find a way to fix it.
For reference, this is the page: http://www.inetsolutions.org/gsa-search-engine-ranker-ultimate-tutorial-and-genuine-review-seo-software-of-the-gods/
Link that works as expected (Facebook, Twitter, Pinterest):
<a href="javascript:void(0)" class="ism_link" onclick="indeedPinterestPopUp(2513);ism_fake_increment('.pinterest_share_count', 'pinterest', 'http://www.inetsolutions.org/gsa-search-engine-ranker-ultimate-tutorial-and-genuine-review-seo-software-of-the-gods/');">
Link that opens the URL to share in both a new window and in the same:
<a href="http://www.stumbleupon.com/badge/?url=http://www.inetsolutions.org/gsa-search-engine-ranker-ultimate-tutorial-and-genuine-review-seo-software-of-the-gods/&title=GSA%20Search%20Engine%20Ranker%20Ultimate%20Tutorial%20and%20Genuine%20Review%20%E2%80%93%20SEO%20Software%20of%20the%20Gods" class="ism_link" onclick="ism_fake_increment('.stumbleupon_share_count', 'stumbleupon', 'http://www.inetsolutions.org/gsa-search-engine-ranker-ultimate-tutorial-and-genuine-review-seo-software-of-the-gods/');return !window.open(this.href, '', 'width=700,height=575');">
What I have tried:
I have tried to remove the "href" attribute of the tag and insert the URL string into the window.open function instead of using "this.href". When I do that, the link opens only a new window, but doesn't open the share page of the respective social media, but rather, the target URL.
I have tried to add "return false" after the non-working window.open function.
I have also tried to remove the "ism_fake_increment" function just to test, but again, to no avail.
I have contacted the plugin author, but they requested to access my website internally, which is not going to happen.
Any ideas will be strongly appreciated. Thank you for your time!

I advise that you don't use the onclick attribute because it leads to extremely messy code. Instead, use the .addEventListener() in the DOM.
To disable the link from opening the link in the same window, just disable the default even. This can be done with .addEventListener() in the callback by calling the .preventDefault() method of the object passed into the callback:
//Get our link:
var link = document.getElementById("stumbleupon");
//Bind the click event:
link.addEventListener("click", function(event) {
//Prevent the link from opening regularly with .preventDefault():
event.preventDefault();
//The following code with the plugin does not work because we haven't included the plugin in the code snippet, but as you can clearly see if you click the link, the link has clearly been disabled because of the above call to .preventDefault().
//Do different stuff with the plugin:
ism_fake_increment('.stumbleupon_share_count', 'stumbleupon', 'http://www.inetsolutions.org/gsa-search-engine-ranker-ultimate-tutorial-and-genuine-review-seo-software-of-the-gods/');
return !window.open(this.href, '', 'width=700,height=575');
});
<!-- Set the ID attribute so we can find this link in the DOM: -->
<a id="stumbleupon" href="http://www.stumbleupon.com/badge/?url=http://www.inetsolutions.org/gsa-search-engine-ranker-ultimate-tutorial-and-genuine-review-seo-software-of-the-gods/&title=GSA%20Search%20Engine%20Ranker%20Ultimate%20Tutorial%20and%20Genuine%20Review%20%E2%80%93%20SEO%20Software%20of%20the%20Gods" class="ism_link">Hello! This is a link to stumbleupon.com!</a>

How to set the title for the new browser tab?

I have a question about the new tab for the link.
Is there anyway I can set the browser tab title before user clicks a link? It seems like there is no way to debate the title for the new tab if the html contained in the new tab doesn't have title attribute. Am I right? How do I set the title?
//the href is dynamic so I can't set them one by one because I have 100+ html file here
<a href="test.html" target="_blank">open me<a>

As you have it, this is not possible because your links are just normal HTML links. When the new page opens in a new tab, the current page will not have any reference to it and so cannot change it in any way. You will need to open the page using javascript and set the title that way.
You can dynamically set this up in window onload to find all a tags and add a click event whihc opens the window and sets the title.
If you want different titles for each page, you can store this in a data- attribute in the a tag.
Note tho that this will only work with pages in the same domain (for security), and that it does not handle people right clicking and pressing "Open in New Window". Middle click in Windows does seem to work however.
HTML
open me
JavaScript
window.addEventListener("load", function() {
// does the actual opening
function openWindow(event) {
event = event || window.event;
// find the url and title to set
var href = this.getAttribute("href");
var newTitle = this.getAttribute("data-title");
// or if you work the title out some other way...
// var newTitle = "Some constant string";
// open the window
var newWin = window.open(href, "_blank");
// add a load listener to the window so that the title gets changed on page load
newWin.addEventListener("load", function() {
newWin.document.title = newTitle;
});
// stop the default `a` link or you will get 2 new windows!
event.returnValue = false;
}
// find all a tags opening in a new window
var links = document.querySelectorAll("a[target=_blank][data-title]");
// or this if you don't want to store custom titles with each link
//var links = document.querySelectorAll("a[target=_blank]");
// add a click event for each so we can do our own thing
for(var i = 0; i < links.length; i++) {
links[i].addEventListener("click", openWindow.bind(links[i]));
}
});
Sample JsFiddle

You can pass the title with hash and get it on another page, if this another page is yours and you can modify its code.
1st page:
...
<a href="test.html#the_title_you_want" target="_blank">open me<a>
...
2nd page - modify the body opening tag like this:
<body onload="document.title=window.location.hash.replace('#','');">
If the page you are linking to isn't yours, you can use window.open method:
open me

I have not seen addEventListener work reliably, especially when opening a new page using javascript. The best way to change the tab title and have it work reliably is to set a timeout until the page loads. You may have to play with the timeout value, but it works.
var newWindow = window.open(url, '_blank');
setTimeout(function () {
newWindow.document.title = "My Tab Name";
}, 100);

You have two options. Using pure HTML, you can let the user open up links, then later on change the title. Or you can change the title with inline JavaScript. Here's how you do both:
Method 1
Change your links by assigning a target attribute, and then later on use that window name to control the document. For instance in your links it would be: <a href="whatever" target="theNewWindow">. Whenever you want to change the title for this page, you'd use JavaScript as such: window.open("", "theNewWindow").document.title = "New Page Title!"; The problem with this method however is that all links with that target/window name will open in that same window. In addition, after the first time the link is clicked, your browser won't automatically switch to the new tab/window.
Method 2
Change your links by assigning an onclick attribute, which would open the link manually and change the title of the page immediately. Basically it would come down to look like: <a href="whatever" onclick="var w=window.open(this.href, '_blank'); (w.onload=function(){w.document.title='New Page Title!';})(); return false;">. This opens the window based on the href attribute, immediately changes the title, and sets the window to change the title to that when it finishes loading (just in case there really was a title tag).
The problem with both of these methods (as mentioned by others) is your html files have to be on the same domain.

The simplest way is a follows:
var winTab = window.open("", "_blank")
//Open URL by writing iframe with given URL
winTab.document.write("write iframe with your url in src here")
//Set Title for the new tab
winTab.document.title = "Form Title"

You could make your own Page 2 that opens up the other pages (the ones you can't edit), in a frameset. You can then either change the title dynamically when loading your page 2, or as others have suggested if you use window.open you can control the title from the parent page.

If you are in page 1, and opening page 2 in a new tab, you can't set title for page 2 from page 1.
If you have access to page 2 then it's possible, otherwise not.

Disable Parent Window after open.window

I want to link to an amazon music preview player as an popup from my site. I have this code:
Link
My Problem is, when I click on the Album Cover in the Amazon Popup, my parent site with the link refreshs with the target Amazon url. When I open the Popup URL by typing the url in the adressbar and then click on the cover, a new window is opend with the target url (this is what I want to force).
Is it possible to don't pass the parent relation with the link popup window?

Make sure you are not using "popper" as the identifier for both instances of winow.open. The main one that opens the initial popup should be different from the one that is inside the popup itself, unless you want it to change the popup that is already open (in which case, the window.open in the onclick attribute is essentially unnecessary).
What I mean is by this:
Say you are launching the original popup with the code in question like this:
Popup
And the popup with the code in question is this (popup.html):
Link
You need to make sure the original popup identifier is different from the one in the popup. So, the original popup should be something like:
Popup

I solved my Problem using something like this:
Open a local popup.php from my site with JS while passing amazonurl as var.
<a onkeypress="window.open(this.href,'popup','scrollbars=1,width=900,height=600'); return false;" onclick="window.open(this.href,'popper','scrollbars=1,width=900,height=600'); return false;" rel="nofollow" target="_blank" href="http://domain.com/popup.php?amazonurl=http://[...]">Link</a>
In popup.php I use
<script language="javascript" type="text/javascript">
window.opener = null; window.location.href = "<?php echo $_GET['amazonurl']; ?>;</script>
To make windpw.opener = null and then refresh the popup with the amazon URL.