A Java script is the ability to view interactive objects embedded in a website, such as menus, pictures, animations, sometimes videos, and more. By default, the script is integrated into the browser and is always on, but very rarely there are overlays and it stops functioning. Also, for some users, the engine causes inconvenience and a logical question arises - how to disable or enable Javascript in .
Instructions for enabling and disabling Javascript in Mozilla Firefox
You can enable or disable the Java script in a separate menu in the settings. The operation will take 2 minutes and will not require a browser restart.
In a similar way, Javascript is enabled in the browser - the value of the variable must be true.
Or another good way to enable the script at the same time and determine the relevance of its version - http://www.java.com/en/download/uninstallapplet.jsp . You need to follow the link, click one button with the agreement and wait 10 seconds. A message about the state of the script in the system will appear on the screen.
If Java is missing
However, the script may not exist at all. To do this, you need to download Javascript for free in Firefox and install it manually. You can download the utility absolutely free of charge from the official website of the developer by going to
How to enable javascript in the browser - instructions for all versions
For the full and optimal operation of web pages in a browser, it is necessary that javascript be activated in it.
What it is and how to enable it, we will explain in this article.
pivot table
What is javascript?
JavaScript can be called a multi-paradigm language. It has support for many ways of programming. For example, object-oriented, functional and imperative.
This type of programming is not directly related to java in any way. The main syntax of this programming language is the C language, as well as C++.
The basis of browser web pages is HTML code, with the help of which programmers add various interactive elements to pages.
If javascript is disabled in the browser, interactive elements will not work.
This type of programming language appeared thanks to the joint work of Sun Microsystems and Netscape.
Initially, JavaScript was called LiveScript, but after the Java language became popular among programmers, the development companies decided to rename it.
Netscape's marketing department thought that such a name would increase the popularity of the new programming language, which, in fact, happened.
Recall that JavaScript is not directly related to Java. They are completely different languages.
JavaScript features
This programming language has an unlimited number of possibilities due to its versatility.
The main aspects of the application are mobile applications for smartphones, interactive web pages of sites and services.
Most of the innovation came from joining the project with AJAX, which provided the features used in the language today.
To save traffic and increase ease of use, JavaScript provides the ability to change the pages of sites and services in small parts without the user noticing online.
This does not require the site to be offline while editing or adding new information.
Changes happen immediately without requiring a refresh or page reload.
The JavaScript feature can be disabled for various reasons.
It is possible that the previous user may have intentionally disabled it, as it was not required for web browsing. Also, the shutdown could happen on its own.
Disabling javascript may cause some links to fail. Below we will look at ways to enable this feature in popular browsers.
Yandex browser
To enable JavaScript in Yandex.Browser, you need to go to the settings.
To do this, in the upper right corner, open the context menu by clicking LMB on the icon "three horizontal stripes", then choose the item "Settings".
After that, you need to find the block "Personal data", in which we press the button "Content Settings".
In the "Javascript" section, check the box "Allow Javascript on all sites" and save the changes by clicking the "Finish" button.
After that, JavaScript is immediately activated and will allow you to view previously inaccessible web pages and perform manipulations on interactive services.
After activating the function, the browser itself does not need to be restarted, you only need to refresh the page by pressing the F5 key or the corresponding icon on the left of the address bar.
In the latest version of the browser, JavaScript activation is installed automatically, so there is no option to enable the function in the settings.
Internet Explorer
In the Internet Explorer browser, you also need to open the settings in order to activate the JavaScript function.
To go to the desired section, press the button marked with a gear, and then select the item "Browser Options".
In the window that opens, select the "Security" tab, in which we click LMB on the item "Internet", then press the button "Another…".
To disable javascript, go to the following points:
- Scenarios.
- active scenarios.
- Execute Java application scripts.
- Disable.
To activate the function in the sub-item "Run Java Application Scripts", check the box "Turn on".
To save the changes, click the "OK" button, after which in the browser properties window you need to click the button "Apply" and restart Internet Explorer.
At the next launch, the changes will take effect, and the function will work properly, providing access to previously inaccessible pages that required JavaScript activation.
Google Chrome
Just like in all browsers, to activate JavaScript, you need to go to the settings.
In Google Chrome, you can open the settings by clicking on the function button in the upper right corner of the window.
It is marked with three horizontal stripes.
In the context menu, select the item "Settings".
After that, use the scroller (mouse wheel) to go to the very end of the page and select the item "Show advanced settings".
With the disclosure of additional settings, the number of available items will increase significantly. Scroll down the page and find the item "Personal data", in which we select the button "Content settings".
In chapter Javascript, to activate or deactivate the function, select the appropriate item, and then click the "Finish" button.
Saved changes take effect immediately.
You do not need to restart the browser, you only need to refresh the page by pressing the F5 key or the corresponding icon on the left in the address bar.
After activating the JavaScript function, you will be able to view previously inaccessible web pages, as well as perform various actions on interactive services.
Mozilla Firefox
With the Mozilla Firefox browser, JavaScript activation is somewhat different.
It all depends on the version of your browser.
Versions 23 and above do not require manual activation of javascript, this function is activated automatically and works perfectly.
To activate the JavaScript function in version 22 and below, go to the toolbar and select the menu item "Settings".
To enable javascript, go to the section "Content", in which, to activate the function, you need to tick the line "Use JavaScript".
To disable the feature, uncheck this box.
To save the changes, click the "OK" button and refresh the browser page.
You do not need to restart your browser for the changes to take effect. After activation, you will be able to fully browse the web and perform actions on interactive services.
Opera
With the Opera browser, the situation is almost the same as with Mozilla Firefox.
The only difference is that the function is not automatically activated in any of the versions.
Activation of JavaScript in different versions occurs in different ways.
Versions 10.5 to 14
First of all, we need to open the browser settings.
In the upper left corner, click the button "Menu", in the context menu, hover over the item "Settings" and click on the sub-item "General settings…".
This will open a new browser settings window.
You need to select the tab "Additionally".
In the left menu of the tab, click on the item "Content", after which we activate the function by putting two checkmarks on the items "Enable JavaScript" and "Enable Java".
To deactivate these checkboxes must be unchecked.
Activating and deactivating javascript in Opera version 10.5 to 14
After you have checked or unchecked the boxes, save the changes by pressing the OK button.
Now restart the browser for the changes to take effect. All javascript functions will become available to you.
Versions 15 and up
In these versions of the Opera browser, activating JavaScript is much easier.
In order to open the settings window, in an open browser, press the Alt+P hotkey combination. In the menu that opens, open the tab "Sites".
To activate the function, you need to set the "checkbox" on the item "Allow JavaScript execution", to deactivate - "Disable JavaScript execution".
After that, just click the "OK" button to save the changes and refresh the page you are viewing with the F5 key or by clicking the corresponding icon on the left of the address bar.
You don't need to restart your browser.
safari
To enable the JavaScript function in Apple's proprietary browser - Safari, you need to go to the settings.
To open them, you need to press the button Safari and select item "Settings».
In the window that opens, go to the tab " Security", where in the section "Web content" To activate the function, you need to check the box "Enable JavaScript".
Accordingly, to deactivate JavaScript, this checkbox must be unchecked.
After that, we save the changes by pressing the "OK" button and refresh the open page in the browser.
You do not need to restart the browser, the changes take effect immediately after saving.
Microsoft Edge
You can activate javascript not only in the browser, but also in the operating system itself. To do this, call the functional window "Run" combination of "hot" keys Win + R.
In the corresponding line, you need to enter the command "gpedit.msc" (without quotes) and press the enter button (Enter).
Computer System Command Group Policy Editor
After that, on the right side of the screen, go to the following folders: Administrative Templates → Windows Components → Microsoft Edge.
Open the file in the last folder "Allows you to run scripts such as JavaScript".
In the window that opens, select the item "Turn on" or "Disable" to activate or deactivate the function, respectively.
After you have activated / deactivated the JavaScript function, save the changes by clicking the "Apply" button.
Conclusion
Today, almost all developers use javascript when creating websites.
Therefore, for the correct operation of sites, it is often recommended to enable this function in your browser.
Javascript is a universal programming language.
With it, almost all modern websites and services are able to provide GIF animation, as well as clickable links and attachments.
JavaScript also allows you to correctly use flash-games and applications, for example, VKontakte games.
But having an activated function is not enough for this.
The latest version of Adobe Flash Player must be installed on the computer system.
In other cases (for example, browser games), the presence of a flash player may be optional.
VIDEO: How to enable JavaScript - detailed instructions
In this tutorial, we will look at how to enable and disable javascript in all major browsers. Let's consider everything using the example of Opera, Mozilla Firefox, Yandex Browser and Google Chrome browsers.
How to enable and disable JavaScript in Opera Browser
How to enable and disable JavaScript in the Google Chrome browser
In the open browser in the upper right corner, click on the button in the form of three stripes and go to "Settings".
In the settings block "Personal data" click on the button "Content settings ..."
A pop-up window will open in which, as in the example of the Opera browser, you must select Allow or Deny script execution.
How to enable and disable JavaScript in Yandex Browser
This will be the last browser we'll look at. With it, everything is as easy as with Google Chrome. In the upper right corner, click on the button in the form of three stripes and go to the settings.
We go down to the very end of the page and click on the "Show advanced settings" button.
In the "Personal data" section, click on the "Content settings" button and configure the execution of scripts in the pop-up window. At the end, click the "Finish" button.
This is how you can enable or disable JavaScript in all major browsers.
With this lesson, we begin to study the Mozilla Firefox browser with you and the next step is to install the browser on your computer.
I have already created video tutorials and written articles on this topic. In them I told how to use for these purposes anonymizers, special Turbo modes for browsers
Nowadays, almost all web pages use JavaScript, a scripting programming language that runs on the visitor's web browser.
JavaScript is a scripting language that can be used to embed small programs into an HTML document (website page) that make it easier to work with an HTML page and make it more beautiful.
Therefore, in order to see the pages of sites colorful, with the full range of functionality, you must enable JavaScript in your browser.
Accordingly, if avaScript is disabled for some reason, the content or functionality of the web page may be limited or not possible at all.
Some sites ask you to enable JavaScript when loading, because without it the page will not load completely, if at all.
Here you can find instructions on how to enable (activate) JavaScript in the five most common web browsers.
And let's start, perhaps, with the browser that comes with Windows.
6 and above
In order to enable JavaScript in the Internet Explorer browser, launch the Internet Options program.
This can be done by going through the menu: "Start - Control Panel - Internet Options"
Or from IE browser: Open menu in tab "Service → Internet Options » .
Or click on the icon "Settings" located on the top right
Open the " Security" and select the zone " Internet » . Click the button "Another » .
Here you need to go to the section "Scripts" and in the area "Active Scenarios" choose "Turn on".
If the window has a slightly different look, then on the "Security Options" tab, we allow scripts and the execution of Java application scripts
Click the button to complete the process. OK. If a confirmation window appears, click "Yes".
Personally, I have the English version of Internet Explorer installed by default - so I have problems with translation. So here is the instruction for users like me :o):
On the web browser toolbar, click the icon «
Tools" and select the item «
Internet Options".
Or on a tab « Tools" and select the item « Internet Options ».
In chapter « Internet Options" select tab « security » .
On the tab security press the button « custom level... »
After opening the dialog box « Security Settings - Internet Zone » , see section « Scripting »
In chapter « Active Scripting » select item « enable »
After the popup appears «
Warning! »
which asks «
Are you sure you want to change the settings for this zone? »
press the button «
Yes »
.
In the window Internet Options press the button « OK » to close it.
Click on the button « Refresh» in a web browser to refresh the page.
Mozilla Firefox< 23
To enable JavaScript in the Mozilla Firefox browser, go to the menu "Tools - Settings"
Select a tab: "Content" - check the box next to "Use JavaScript". And press OK.
I want to note that since the 23rd version of the browser, the ability to enable / disable JavaScript in this menu is missing.
Mozilla Firefox
Note. In Mozilla Firefox version 23 and above, you do not need to manually enable JavaScript - the option is enabled by default. To disable JavaScript, follow these steps:
- In the address bar, enter about:config and press Enter.
- Click the button "I promise I'll be careful..." if a warning message appears.
- Find in the search field javascript.enabled
- With the left mouse button, select the rows with the "default" value and click Toggle. or double click the preference to change the value from "false" on the "true".
For the English version of the Mozilla Firefox browser:
- From the web browser menu, click and select "options".
- In the "Options" window, select the tab "content".
- Check the box "Enable JavaScript".
- In the "Options" window that opens, click the button "OK" to close it.
- Click on the button "Reload current page" web browser buttons to refresh the page.
Google Chrome
In order to enable JavaScript in the Chrome browser, go to the browser settings - click on the "Menu" icon located on the top right:
Click the link "Show advanced settings" at the bottom of the page. 
Choose an item JavaScript t, and we allow sites to use JavaScript, or we don't. You can also add exceptions for some sites here. 
For English version:
Opera
In order to enable JavaScript in the Opera browser, you need to select from the menu: "Settings - Quick Settings - Enable JavaScript"
Or on the menu Instruments select item "General settings".
In the window that opens, go to the tab "Additionally". Select a menu item "Content" and uncheck "Enable JavaScript and Enable Java".
And for the English version:
a) Click on the button "Menu""Settings" then hover over the item "Quick preferences" and check the box "Enable Javascript".
B). If the menu bar is displayed, press "Tools", move the mouse cursor over the item "Quick preferences" and check the box "Enable Javascript".
Apple Safari
In the browser click Safari - Preferences ( or Click the icon in the upper right corner of the screen - depending on the browser version):
Go to the tab "Security" and check the box next to "Enable JavaScript"
Or, according to the version, install in the section Web content flags Enable Java and Enable JavaScript
For the English version of the browser:
- In the web browser menu, click the button "Edit" and choose "Preferences".
- In the window "Preferences" select tab "Security".
- On the tab "Security" In chapter "web content" check the box "Enable JavaScript".
Based on materials uznaytut48.ru, www.enable-javascript.com, help.yandex.ru
Important: Javascript settings may change when you update your browser, install new software or security patches.
I hope that the information is useful: o).
