Chapter 2 How To Enable JavaScript in Browsers

Enable JavaScript
Enable JavaScript

How To Enable JavaScript in Browsers

In the previous chapter you have came to know the basic introduction about JavaScript . Now a days all the modern browsers come with built-in support for JavaScript. So frequently, you may need to enable JavaScript or disable JavaScript support manually. In this chapter you will learn the steps involved to enable JavaScript support in various browsers like, Internet Explorer, Firefox, chrome, Opera and Android web browsers.

Enable JavaScript in Internet Explorer

Here are simple steps to Enable JavaScript in  Internet Explorer −

  • Follow Tools Internet Options from the menu.
  • Select Security tab from the dialog box.
  • Click the Custom Level
  • Scroll down till you find Scripting
  • Select Enable radio button under Active scripting.
  • Finally click OK and come out

Select Disable radio button under Active scripting to disable JavaScript support in  Internet Explorer.

Enable JavaScript in Firefox

JavaScript in Mozilla Firefox can be disabled through some simple steps −

  • Open Firefox browser  – on the address bar type about: config .
  • A warning dialog will appear . Accept the responsibility by  Selecting  I’ll be careful, I promise!
  • A lots of  configuration options will appear in the browser.
  • In the search bar, type JavaScript.enabled.
  • To enable/disable JavaScript just  right-click on the value of that option →use  toggle button to enable /disable.

If javascript.enabled  is false then click on the  toggle button to enable it.

Enable JavaScript in Chrome

Enable JavaScript
Enable JavaScript

Follow the steps below to turn on or off JavaScript in Google Chrome browser −

  • Click on the three vertical dots on the the top right hand corner of the chrome browser.
  • Click on  Settings.
  • Click on Advanced button at the end of the page.
  • Search for  Privacy and Security section, click the Site settings button.
  • Search for Content section , click on the “JavaScript” section, Toggle the Allowed / Blocked button to Allowed.

Enable JavaScript in Opera

JavaScript in Opera can be enabled or disabled as described as under −

  • Follow Tools Preferences from the menu.
  • Select Advanced option from the dialog box.
  • Select Content from the listed items.
  • Select Enable JavaScript
  • Finally click OK and come out.

Simple un-check the the Enable JavaScript checkbox to turn off  JavaScript support in your Opera browser

Warning for Non-JavaScript Browsers

Sometimes we use JavaScript in our page but the browser you are using is not supporting it or support is not enabled then you need to check for status of JavaScript status , then you should display a warning message to the user using <noscript> tag.

A noscript block should follow immediately after the script block as follows −

<html>
<body>      
<script language = "JavaScript" type = "text/javascript"> 
   <!--            document.write("Hello World!")         //-->      
</script>            
<noscript> Sorry...JavaScript is needed to go ahead. </noscript>         
</body>
</html>

Now, if the user’s browser does not support JavaScript or JavaScript is not enabled, then the message from </noscript> will be displayed on the screen.

Enable JavaScript in Android Web Browser in Mobiles

To enable JavaScript in the default browser on an Android device, follow the these steps :

  1. Select Browser or Internet or Chrome to open the web browser
  2. Select Menu 
  3. Go to Settings 
  4. Tap on Advanced
  5. Select Site Settings
  6. Select Enable JavaScript.

JavaScript is one of the premier Scripting Programming Language use today. So it enjoys the support from all the modern browsers. Also we can enable or disable it at any point of time. The process to enable and disable for most prominent browsers has been discussed in this chapter.

Hope you have enjoyed reading the Article. Pl do comment, Like and Share if you find it informative.

 To visit the  Official website of JavaScript Click here
Similar Topics: Let us Learn JavaScript from Step By Step ,    How to Generate Output in JavaScript,
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