At some point in time, while using your browser to access a web page,  you might have encountered the error “JavScript Void 0”. You should note that Java and JavaScript aren’t the same. So, installing Java on your system will not help fix the problem.

The reason why you encounter this error is that something is blocking the JavaScript on the webpage on your end. And, if you can’t fix it from your end – there might be a JavaScript programming error on the webpage. You need to notify the website’s admin to solve the issue – there is nothing much you can do.

If you have encountered the error and looking for a fix, fret not, we have a couple of easy solutions. In addition to that, we will also let you know what JavaScript Void(0) refers to.

What is JavaScript Void(0)?

As Mozilla’s dev blog explains, void is a JavaScript operator. And, here’s what Void(0) does:

” This operator allows evaluating expressions that produce a value into places where an expression that evaluates to  undefined  is desired.

The  void operator is often used merely to obtain the  undefined  primitive value, usually using “void(0)” (which is equivalent to “void 0”). In these cases, the global variable  undefined  can be used instead (assuming it has not been assigned to a non-default value).”

In other words, when you click on a click – it does nothing. It’s just a URL placeholder for an action on a web page.

To know how JavaScript is different from Java, you should refer to Java.com’s official FAQ webpage.

Fix 1: Ensure that you have JavaScript enabled (Google Chrome)

If you are a Google Chrome user, you need to check whether the JavaScript is being allowed to run on the webpage or not. To check that, click on the lock/globe icon to the extreme left of the address bar and then click on site settings:

After that, scroll down to see if you have allowed JavaScript to run:

Fix 2: Bypass cache and refresh the webpage

You need to simply refresh the webpage by bypassing the cached content. To do that, here are the keyboard shortcuts:

  • For Windows-powered systems: Ctrl + F5
  • For Mac-powered systems: Command + Shift + R

Fix 3: Clear cookies associated with the website

When you log in to a site (or simply visit a webpage), the cookies (or the text files) usually retain your session’s information. The status that you’re logged in, your likes, your preferences, and similar stuff that personalizes your experience on their website. And, it resides on your computer (browser’s folder).

So, you need to clear the cookies associated with that particular website (on which you are getting the error). We will show you how to do that (on Chrome):

  1. Go to the Chrome’s settings.chrome settings
  2. Scroll down to the bottom to find the “Advanced” section and click on it to reveal more options.
    chrome black screen issue
  3. Now, you will find numerous options under “Privacy and security“. Go to “Content settings“.
  4. Here, click on “Cookies“.
  5. Finally, click on “Select all cookies and site data“.
  6. Now, you need to search for the cookie by entering the site URL in the search bar and delete whatever gets listed for it.

If you’re using Firefox, you can refer the screenshot below to find the option to manage cookies:

clear cookies

Fix 4: Disable all the extensions

No matter what browser you are utilizing, there can be extensions that could be causing the error.

So, to ensure that no browser extensions conflict with the website’s JavaScript, you need to disable every extension you have installed and then re-activate them one by one.

For Google Chrome, you just need to navigate your way through Customize & control Chrome (menu) -> More Tools -> Extensions. (as shown in the image below)

google chrome extensions

After following the options in the image above, you will need to disable the extensions:

chrome extensions

On Firefox, you just need to head to the browser’s menu and then click on “Add-ons“.

Wrapping Up

Now that you have known what JavaScript is and why do you encounter the error. I am sure that you will be able to resolve the issue.

In either case, let us know in the comments below if the above solutions did not work for you.

Filed in Computers >Web. Read more about Javascript and Windows.

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