Can javascript be disabled in Firefox (newest version) WITHOUT any 3rd party add-ons?

[Xavier]

Can it be done through any of the option menus in FF?

[Dominic]

They removed the JavaScript check box but you can still disable it using the about: URI. In the address bar, type about:config then press the Enter key. You'll see a warning message. Click "I'll be careful, I promise!" to clear it. Type "javascript.enabled" into the search field without the quotes. This is set to true when JavaScript is enabled. Double click on it to switch it to false and JavaScript will be disabled.

– Dominic

[Ankit]

javascript is enabled by default in all browsers. You can disable it manually,

[Web]

follow Dominic advice and if you're having troubles manipulating the entries in the about:config window, see this demo

http://w3-video.com/Web_Browsers/mozilla...onfig.html