Deactivating JavaScript instructions for Firefox, Chrome, and IE

All common web browsers offer the possibility to deactivate JavaScript if required. Where you find the function depends on which browser you are using. We will explain below how to deactivate JavaScript with just a few clicks in the web browsers Mozilla Firefox, Google Chrome, and Microsoft Internet Explorer (IE).

Deactivating JavaScript in Firefox

Mozilla Firefox version 23 or higher no longer provides the JavaScript deactivation function through the browser settings. Users who want to deactivate JavaScript in the browser must therefore take the detour through the configuration editor. Proceed as follows:

Step 1: Enter “about:config” (without quotation marks) in the address line and confirm with Enter.

Step 2: If you open the configuration editor for the first time, Firefox plays the following warning by default before you are redirected to the hidden browser settings.

Confirm that you are aware of the dangers and wish to continue. If you no longer want to receive the warning when you call the configuration editor in the future, clear the check mark for “Show this message next time”.

Step 3: Enter javascript.enabled (without quotation marks) into the search bar in the configuration editor and confirm with Enter. Firefox filters the desired line out of the settings.

Step 4: Right-click on the “javascript.enabled” setting line and select the “toggle” option in the context menu to change the value of the setting from “true” to “false.”

JavaScript is now deactivated in your browser.

Click “Toggle” again to reactivate the function if necessary.

Deactivate JavaScript in Chrome

Google Chrome users can manage JavaScript handling options directly from their browser settings.

Step 1: Click on the menu icon in the upper right corner of your browser window and select “Preferences” to open the browser settings.

Step 2: Scroll to the bottom of the menu and click the “Advanced” button to open the advanced browser settings.

Step 3: Under “Privacy and Security” select the “Site Settings” menu item.

Step 4: Click on the “JavaScript” menu item in the content settings.

Step 5: JavaScript is automatically enabled in Chrome. If you want to disable JavaScript for all websites, switch the slider from “Allowed (Recommended)” to “Blocked”.

Alternatively, you can deactivate or allow JavaScript only for selected online offers. If necessary, add these web pages to the black or white list by clicking the “Add” button.

Deactivate JavaScript with Internet Explorer

Microsoft also offers Internet Explorer users the option of preventing the client-side execution of scripts. Unlike Firefox and Chrome, scripting options are not configured through the browser settings, but in the internet options of the operating system. Proceed as follows:

Step 1: Click on “Tools” in your browser window’s menu bar and select “Internet options”.

Windows opens a dialog window with the same name.

Step 2: In the “Internet options” dialog box, navigate to the “Security” tab.

 

Step 3: Select the internet zone and click the “Custom level” button.

Windows opens the “Security Settings – Internet Zone” dialog box.

Step 4: Scroll down to the scripting section and disable the active scripting and Java Applet scripting features by switching the “Enable radio” button to “Disable”.

Alternatively, you can select the “Confirm” option. In this case, JavaScript will only be executed by your web browser if you have actively agreed to it. When you access the corresponding web content, a message will appear in your browser informing you that the website wants to execute JavaScript code. In this way, you decide on a case-by-case basis whether you want to allow this or not.

Be prepared for the consequences

Before you deactivate JavaScript in your web browser, you should be aware of the consequences. According to w3techs.com, the scripting language is used on about 95% of all web pages on the internet. These can often only be displayed correctly if the web browser is capable of processing JavaScript.

Also, not all web page operators offer adequate alternative versions, which get along without scripts. If you deactivate JavaScript, you run the risk of missing essential contents of the corresponding pages. The manufacturers of all common web browsers therefore advise against completely blocking the execution of JavaScript.

Tip

An alternative to deactivate JavaScript in the browser are browser extensions that restrict the client-side execution of scripts according to user-defined rules. The market leader in this area is the open source Firefox plugin NoScript. For Chrome, ScriptSafe is an open source extension with the same concept available.


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