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How to enable javascript

How to enable JavaScript in your browser

How to show visitors who have not enabled JavaScript an alert message:

With the above code you can show all your website visitors an info message if they have not enabled JavaScript in their browser.

It helps Javascript deniers to better understand the usefulness of this beautiful programming language and thereby improve their long-term experience on websites.

Where to insert the code?
Insert it preferably after the tag.

How to enable Javascript in the most popular browsers:

Google Chrome

  1. Click on the three stacked dots on the top right side
  2. Select «Settings»
  3. On the bottom of the site click on «Show advanced settings . » to expand the hidden options
  4. Under the «Privacy» section, click on the entry «Content settings»
  5. A dialog window opens, and under the headline «JavaScript» select «Allow all sites to run JavaScript (recommended)»

Internet Explorer

  1. Click on the settings icon and select «Internet Options».
  2. In the opened window selec the «Security» tab
  3. Inside the «Security» tab, select «Internet» as zone and click on the «Custom Level. » button.
  4. In the opened window look for the «Active Scripting» entry (under the «Scripting» category) and select the radio button «Enable» to enable JavaScript in the Internet Explorer.
  5. A «Warning!» window pops out with the alert «Are you sure you want to change the settings for this zone?» select «Yes».
  6. Click the «OK» button in the «Internet Options» window. The browser will ask you if you really want to apply the settings, which you confirm.

Mozilla Firefox

  1. Open the hidden configuration menu of firefox by typing in «about:config» in the address bar and confirming with Enter
  2. Firefox responds with a warning message — click on the button «I’ll be careful, I promise»
  3. The «about: config» area has its own search function (directly below the address bar).
    Enter the following search term:»javascript.enabled»
  4. Firefox then lists the entry for JavaScript which has the value «false» if its deactivated. Double-click the line if you want to enable JavaScript in Firefox. Instead of the value «false» the value «true» should now be displayed.
  5. Reload the page by clicking on the refresh button

Apple Safari

  1. Click the settings icon in the top right and select «Preferences».
  2. Under the «Security» tab, which is marked with a lock symbol, you will find the entry «Web content».
  3. To enable JavaScript in Safari, check «Enable JavaScript».
  4. Refresh the page by clicking on the «Reload the current page» button of the safari web browser .

Opera

  1. Open the menu with the Opera icon and click on «Settings»
  2. On the left side you will find the menu item «Websites», which you can select with a simple left-click.
  3. Scroll down to the entry with the headline «JavaScript» and change the selection to «Allow all sites to run JavaScript (recommended)».
  4. Refresh the page by clicking on the «Reload» button of the Opera Browser

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What does JavaScript mean?

JavaScript (short: JS) is a scripting language developed in 1995 by Netscape for displaying dynamic HTML content in the browser. The language is easy to understand and is very often used as part of websites. The implementation of JavaScript allows the client-side script to interact with the user and create dynamic pages. JS is an interpreted programming language with object-oriented capabilities. The scripting language was developed as a supplement and integration into Java and HTML. It is considered open and cross-platform.

The scripting language was first called LiveScript by developers, but Netscape eventually changed the name to JavaScript, possibly because of the hype created by the Java programming language. It was first released as LiveScript in 1995 in Netscape 2.0. The universal kernel of JavaScript has been embedded in Netscape, Internet Explorer, Firefox and other web browsers.

Client-side JavaScript
This is the most common form of the language. The script is included in many HTML documents so that the code can be interpreted by the browser. This means that a webpage need not be static HTML, but can contain elements that interact with the user, control the browser, and dynamically create HTML content.

It has many advantages over traditional CGI scripts on a server. For example, a script can be used to verify that the user entered a valid email address in a form field. The JavaScript code is executed when the user sends the form, and only when all entries are valid are they sent to the web server. The scripting language can also be used to register and execute user-triggered events such as button clicks, link navigation, and other actions.

The advantages when you enable JavaScript
When used on the network, the scripting language provides the following benefits:

  • Less server interaction — User input can be checked before being sent to the server. This reduces data traffic sent to the server and ensures a low utilization rate.
  • Instant feedback — Visitors to a web page do not have to wait to reload a page to see if they’ve entered everything correctly.
  • Increased interactivity — Speech can be used to create surfaces that react when the user hovers them over the mouse or activates them from the keyboard.
  • Better Interfaces — JS can be used to incorporate elements such as drag-and-drop components and sliders to give your website visitors a professional interface.

JavaScript limitations
JS can not be considered a full-fledged programming language. For this it lacks a few important functions:

  • It does not allow reading or writing files. This was retained for security reasons.
  • JavaScript can only be used in network applications that support this scripting language.
  • It has no multithreading or multiprocessing capabilities.

JavaScript Development Tools
One of the biggest strengths of this language is that it does not require expensive development tools. The scripts can be created with a simple text editor and pasted into an HTML program. Because it’s an interpreted language in the context of a web browser, not even a compiler is required.

The scripting language can be used for object-oriented and procedural programs. The language contains many predefined objects, methods, and functions for accessing a web page. Also, the programmers have numerous libraries at their disposal. Libraries are always included in the program code when certain functions are required. This can be used to display or animate tables, graphics or diagrams, for example.

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To make life easier for programmers, several vendors have developed very powerful JavaScript editing tools (frameworks). Frameworks help programmers with certain design patterns and functions and facilitate the creation of the program code.

As you can see, there are a lot of positive things to tell why to enable javascript.

Enable JavaScript

某些 Creative Cloud 应用程序、服务和功能在中国不可用。

If JavaScript is not enabled (turned on), you may not be able to install Adobe AIR, Flash Player, Shockwave Player, and Acrobat properly.

You do not need to enable JavaScript in the latest version of Firefox.

Verify if JavaScript is enabled

Microsoft Internet Explorer (Windows only)

In Internet Explorer, click Tools > Internet Options.

On the Security tab, select the Internet zone icon.

Click Custom level.

In Security Settings, scroll down to Scripting.

Select Enable under Active Scripting.

Select Trusted Sites and repeat steps 3 — 6.

Safari (Mac OS only)

In Safari, choose Safari > Preferences.

On the Security tab, select Enable JavaScript.

Mozilla Firefox

In Firefox version 23 and later, JavaScript is enabled by default. If you have an earlier version, as soon as you update, JavaScript will be enabled.

To verify if you have the latest version of Firefox:

  • Vista and Windows 7: Click Tools > Help > About Firefox.
  • Windows XP: Click Help > About Firefox (XP).

When you open the About Firefox window, Firefox automatically checks for and downloads any updates, which are installed when you restart the browser.

For more information about the automatic update process see “Update Firefox to the latest version” in Mozilla Firefox Help.

To enable JavaScript in Firefox version 22 and earlier:

If you are unable to update to the latest version of Firefox and are having problems with Flash Player installation, check to make sure JavaScript is enabled.

In Firefox, click Tools > Options.

Select Content, and then select Enable JavaScript.

Click OK, and then close and reopen Firefox.

Google Chrome

If you are having trouble installing Adobe AIR, make sure you have the latest version of Chrome installed.

If you want to download Adobe AIR for a different browser or operating system or an earlier version of Chrome, you should verify that JavaScript is enabled.

To verify if you have the latest version of Chrome:

  1. In Google Chrome, click Chrome > About Google Chrome.

When you open the About Google Chrome page, Chrome automatically checks for and downloads any updates, which are installed when you restart the browser.

For more information about the automatic update process, see “Update Google Chrome” in Google Chrome Help.

To verify if JavaScript is enabled:

How to Enable and Disable JavaScript in your browser

How to Enable and Disable JavaScript in your browser?

This section will show you how to enable JavaScript in your browsers and how to disable them, too. The process for enabling or disabling them will vary depending on the browser you are using since cookies are maintained by your web browser.

Google Chrome

  1. Bring up your Google Chrome browser and click on the menu resembling three horizontal lines. Click Settings once the drop down menu pops out.
  2. Scroll down the Settings page and click on Show Advanced Setting.
  3. Under Privacy, click Content Settings.
  4. Scroll down to Javascript and tick the Allow all sites to run JavaScript circle and click Done.

Internet Explorer

  1. Open the browser, click the gear icon on the upper right corner and click Internet Options.
  2. Go to the Security tab and click Custom level on the bottom.
  3. Scroll down until you find the Scripting option and enable the Active Scripting below that to enabled. Confirm the change and close the Settings window.

Mozilla Firefox

  1. Open the Firefox browser and type about:config on the address bar. Click I’ll be careful, I promise.
  2. Scroll down to find the JavaScript enabled row and double click to convert False to True. Refresh your browser.

Opera

  1. Open the browser and click the Opera button at the top left side and highlight Settings once it drops down. Highlight the Quick Preferences option and then tick the Enable JavaScript Option.
  2. Refresh your page and you will see that JavaScript has been activated.

Safari

  1. Open the browser, click on the gear icon and select Preferences.
  2. On the Security tab, tick the Enable JavaScript option and close the dialogue box.

All About JavaScript And What It’s For

When talking about web management, it’s impossible to avoid the topic of JavaScript. In order to actually make use of it, however, you need to know what it is and what it’s for. At this point, it’s more than likely that the website that you are running is already using JavaScript, so this would most likely be more about getting additional details. If you haven’t started a website yet, this information is even more important.

What is JavaScript?

JavaScript is a programming language that functions as one of the three main pillars of the internet, which basically makes it an incredibly important part of the whole website management deal. You could still technically have a website without JavaScript, but it would be the kind that modern users wouldn’t want to visit. This is because you need to have the programming language in order to have any kind of interactivity on your website.

History Of JavaScript

The history of JavaScript can be traced back to the beginnings of Mosaic Netscape 0.9 in 1994. It quickly became the most popular browser version in the world at the time, which then allowed the company to create the programming language that would complement their existing platform Java. This is when JavaScript was born.

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The purpose of the script was to have a programming language that was not only dynamic but was also friendly to developers. This contributed to its skyrocketing popularity among third-party entities and it has maintained that position ever since.

What Is JavaScript Used For?

So, what exactly is JavaScript used for and why does your website need it? Answering these questions requires addressing a simple fact about the programming language: it’s meant to address a wide range of functionality that are integral to the World Wide Web. This makes it a little difficult to explain everything that it can do for you. Just to keep things as simple as possible, let’s narrow our target and just focus on the website.

Basically, JavaScript meant to provide the HTML that the users see with all of the elements that modern users are already accustomed to. These include the addition of interactive content, various animations, providing pop-up windows for filling out forms or providing notifications, and even keeping track of user activity. You might have noticed that these are all of the things that you need in order to retain the interest if your users on your website, which makes the importance of the programming language rather obvious.

Flash player is a freeware software that is used to stream and view videos and multimedia. It can run from a web browser and on mobile devices provided that such device is supported. It supports many data formats such as AMF, SWF, XML, and JSON. Flash player as a graphics and multimedia platform, supports FLV, mp3, JPEG, and GIF. Flash player applications and games can be built by Flex and Pure ActionScript applications. Click here to enable adobe flash player.

A web cookie is a small data sent from a website and then stored in the user’s web browser. It is designed to remember information such as browsing activity. A good example of a cookie is Authentication cookie. An authentication cookie is one which is used by servers to know whether the user is logged in or not. Tracking cookies are distributed, read and shared across two or more unrelated websites for them to gather information and present customized data to the user. Web cookies simply store information to improve web experience. Visit this website if you want to enable or disable your cookies.

Do you know someone who seems to be the Master of the VLC Keyboard Control? That person must appear pretty amazing to you, right? He’s probably the savior of all your movie marathons, ensuring that your viewing goes on uninterrupted. Not to mention the almost divine capacity to memorize all those functions.

Or maybe you’d like to become that Master. Well, this is your key towards achieving such a status: VLC Keyboard Shortcuts. This site will basically tell you all that you need to know, and perhaps even more. Once you get into it, you’re all set to be named Master.

Enable JavaScript

某些 Creative Cloud 应用程序、服务和功能在中国不可用。

If JavaScript is not enabled (turned on), you may not be able to install Adobe AIR, Flash Player, Shockwave Player, and Acrobat properly.

You do not need to enable JavaScript in the latest version of Firefox.

Verify if JavaScript is enabled

Microsoft Internet Explorer (Windows only)

In Internet Explorer, click Tools > Internet Options.

On the Security tab, select the Internet zone icon.

Click Custom level.

In Security Settings, scroll down to Scripting.

Select Enable under Active Scripting.

Select Trusted Sites and repeat steps 3 — 6.

Safari (Mac OS only)

In Safari, choose Safari > Preferences.

On the Security tab, select Enable JavaScript.

Mozilla Firefox

In Firefox version 23 and later, JavaScript is enabled by default. If you have an earlier version, as soon as you update, JavaScript will be enabled.

To verify if you have the latest version of Firefox:

  • Vista and Windows 7: Click Tools > Help > About Firefox.
  • Windows XP: Click Help > About Firefox (XP).

When you open the About Firefox window, Firefox automatically checks for and downloads any updates, which are installed when you restart the browser.

For more information about the automatic update process see “Update Firefox to the latest version” in Mozilla Firefox Help.

To enable JavaScript in Firefox version 22 and earlier:

If you are unable to update to the latest version of Firefox and are having problems with Flash Player installation, check to make sure JavaScript is enabled.

In Firefox, click Tools > Options.

Select Content, and then select Enable JavaScript.

Click OK, and then close and reopen Firefox.

Google Chrome

If you are having trouble installing Adobe AIR, make sure you have the latest version of Chrome installed.

If you want to download Adobe AIR for a different browser or operating system or an earlier version of Chrome, you should verify that JavaScript is enabled.

To verify if you have the latest version of Chrome:

  1. In Google Chrome, click Chrome > About Google Chrome.

When you open the About Google Chrome page, Chrome automatically checks for and downloads any updates, which are installed when you restart the browser.

For more information about the automatic update process, see “Update Google Chrome” in Google Chrome Help.

To verify if JavaScript is enabled:

How to Turn Off Javascript the Easy Way

Javascript is one of the three quintessential development languages as defined by the World Wide Web Consortium (W3C). Along with HTML and CSS, JavaScript is used for manipulation of elements on a web application, and this has shaped the modern internet as it is known today.

Since the mid-2000’s, browsers began to automatically enable JavaScript by default. However, for security and privacy reasons, JavaScript can still be turned off, and some niche browsers don’t use it at all.

About Javascript

Firstly, JavaScript should not be confused with Java, which is a separate programming language. JavaScript, also known as ECMAScript, was developed as a dynamic programming language that allows for control of the elements of a web application. On a website, your browser loads what is called the Document Object Model (DOM) — and JavaScript is able to manipulate the elements in the DOM, such as to make a web application responsive to the user.

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Any animated menu system, any web form validation or submission, any web-based instant messaging system, or play button on a web video player, that exists thanks to JavaScript.

JavaScript was created by Brendan Eich in 1995 while he was working for Netscape on the Netscape Navigator Web browser. Eich also later cofounded the Mozilla project, which has become one of the primary curators of JavaScript, along with Netscape Communications and ECMA International.

JavaScript, as a cornerstone of the web itself, is used by potentially tens of millions of developers worldwide.

How to Enable/Disable Javascript

With JavaScript being extremely crucial to almost all modern web browsers, and automatically enabled almost universally, it might seem silly to want to disable it.

However, for security sensitive environments, disabling JavaScript is a safe precaution to protect against malicious attacks such as cross-site scripting. For the most part, modern browsers are aware of the types of attacks that can occur, and will prevent untrusted sources from running. However, in government agencies or large sensitive corporations, disabling JavaScript on network machines might be a good extra precaution.

Internet Explorer

For Internet Explorer 9 or newer, simply follow these steps. For Internet Explorer 8 or earlier, the only difference is that «Internet Options» is found under the «Tools» menu button.

  1. Click on the setting icon that looks like a Gear in the upper right corner.
  2. Click on Internet Options in the Dropdown
  3. The pop-up menu will show a variety of options, click on the «Security Tab»
  4. On the Security Tab is a button that says «Custom Level» — click that.
  5. This opens up a Security Settings pop-up, scroll down until you find the «Scripting» section.
  6. Choose to Disable, Enable, or Prompt for approval, any site which has JavaScript.
  7. Press OKÂ on the Security Settings Pop-up, then the Internet Options Pop-up

Firefox

Firefox doesn’t have easy button access to JavaScript settings, but the procedure to enable/disable JavaScript is just as simple.

  1. Go the URL and type «about:config» without quotes, and hit Enter.
  2. This brings a page with a prompt to click a button labeled «I’ll be careful, I promise» — click this button.
  3. This brings up a Preferences List, there is a toolbar at the top, type «javascript» into the tool bar and hit enter
  4. This brings up a set of results, go to the one labeled «javascript.enabled» and double click it to switch between enabled/disabled

That’s it, you can close the about:config tab without hitting OK, just close the window or type in a new page URL.

Chrome

Changing the JavaScript settings in Chrome is fairly simple, but requires navigating through a few menus.

  1. Click the «Hamburger» icon of three vertical lines in the upper right.
  2. Find the label called Settings and click that.
  3. In the Settings Page, scroll down and find the hyperlink labelled «Show Advanced Settings. » Click that.
  4. Under the advanced settings, there is a button labelled «Content Settings. » Click that.
  5. This opens a pop-up, scroll down until you come to JavaScript Settings. Enable/Disable or manage exceptions. Then Press «Done»

For advanced users, managing the exceptions allows the user to either allow or disallow JavaScript on an individual page.

Opera

Enabling/disabling JavaScript in Opera is also extremely simple.

  1. Click on the Opera button in the upper left corner
  2. Click on the Settings Menu Selection
  3. This brings up a new Settings page, click on the Websites option on the left navbar.
  4. Find the section labeled JavaScript, you can either enable it, disable it, or manage exceptions.

JavaScript FAQ

Q. Why would someone want to disable JavaScript?

A. Primarily for security purposes. For normal at home browsing, disabling JavaScript may make surfing the web more difficult, but for internal network use or secure remote servers — disabling is an added step of precaution.

Q. Why is JavaScript so essential to the modern web?

A. JavaScript (or EMCAscript) was invented to manipulate HTML and CSS on the user-side of a website. It’s the technology that allows a web browser to be interactive, and is maintained by the W3 Consortium as an international standard.

Q. Should I learn JavaScript for putting together a website?

A. Yes, in almost all cases. Even for mobile app development knowing JavaScript wouldn’t hurt. It’s perhaps one of the most used languages ever since web development is one of the largest segments of developers. There are a lot of places to get started.

Q. What browser should I use for the best or most secure JavaScript experience?

A. Chrome, and all Chromium browsers cache pages in a special way, and most pages are optimized for it. Firefox can run OpenCL, which means it can run JavaScript the most efficiently. However, for the most secure browser, that question deserves it’s own section -Â read on below for the answer.

Secure Browser Alternatives

There are in fact hundreds of browsers you can choose from other than the large mainstream browsers listed above. There are also browser security tools in the form of browser extensions, which allow for greater security precautions and control over information privacy.

FireFox NoScript Security Suite

This Plugin prevents JavaScript, Java, and other executable content from running on domains which are not verified in a trusted domain. This allows for protection against all sorts of vulnerabilities like Cross-Site Scripting, cross-zone DNS rebinding, and router hacking. It is the winner of the «PC World — World Class Award» for security, and is recommended for any computer taken into public networks.

Webutation for Chrome, Firefox

This is a crowd-sourced metric which determines how safe and secure a website is. Users of this application assign a trust score to the URL they are visiting, and the global average gets requested every time you visit a new page. Sites with a high score are trustworthy, sites with a low score should be avoided.

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