Yes, now days all browsers support it. and also you can learn it and start writing it, it's free.
JavaScript is a programming language.
If you are referring to Java Runtime Environment (JRE), the program that runs the Java programming language (not to be confused with JavaScript), then yes, it is free from the Java home website (link given below)
you probably mean java - download it free from http://java.com/en/ or you can enable javascript in your browser - go to http://wiki.answers.com/Q/How_can_you_activate_the_java_script_in_the_internet_browser
A JavaScript tutorial contains instructions that will teach you how to code in JavaScript.
HTML, CSS, & JavaScript.
Javascript does not have classes
Javascript was created in 1995.
One can find free javascript by using Google to find a website which offers the service. There are many websites which provide javascript for free to enhance one's website.
There are lots of free web hosting providers who support javascript and HTML files and other promising languages. please check one of them. like GoogieHost
you probably mean java - download it free from http://java.com/en/ or you can enable javascript in your browser - go to http://wiki.answers.com/Q/How_can_you_activate_the_java_script_in_the_internet_browser
W3 schools offers free online courses. These are a good way to learn this skill.
A JavaScript tutorial contains instructions that will teach you how to code in JavaScript.
HTML, CSS, & JavaScript.
Javascript does not have classes
Javascript was created in 1995.
Javascript can help in browseing
Yes, I have found that the w3schools.com online courses in JavaScript are great. They are short & easy to understand. They also have a hands-on learning area that allows you to manipulate the code. They offer beginning and then more advanced concept in JavaScript to learn. The icing on the cake is that it's free.
No, Java and JavaScript are nothing to do with each other, JavaScript is a form of EMCAScript, not Java. Every modern browser comes with a JavaScript engine that is used to understand JavaScript. so there is no need for it, no.
A "closure" is an expression (typically a function) that can have free variables together with an environment that binds those variables (that "closes" the expression).