JavaScript has it's pros and cons. Most people will tell you that JavaScript consists entirely of cons, but if applied correctly, it is a very powerful and dynamic scripting language.
It's usefulness depends almost entirely on it's application, tho.
depending on the intention of the javascript codes you wish to write. there is much you can do with javascript but the only way to find out what "good Java script codes" are is to explore what you want the Javascript to do on the page.
Java script can make it hard for crawler to scan your website. Insight linking is good for SEO. Javascript is not a bad thing.
You can save JavaScript files with any text editor of your liking. Just add the .js file extension and you're good to go.
If you got no answer here, you could type your question on Googleyoure looking for a great javascript tutorial, there are many resources available online that can help you learn this powerful language
No, there is no need for JavaScript in normal circumstances. There is no need for any programming or scripting languages for web-based programming if you are good with html.But things are rarely that simple. Most websites make use of AJAX and Javascript is essential for it.
A JavaScript tutorial contains instructions that will teach you how to code in JavaScript.
HTML, CSS, & JavaScript.
Javascript does not have classes
Javascript can help in browseing
Javascript was created in 1995.
It would be more beneficial to code and learn javascript. There is enough material available on web for it & programming languages are better to code & learn then study & learn. If you still insist on textbooks then O'Reily books on javascript maybe a good place to start.
You can call an external javascript file or javascript code located inside the head or body tag from a form using event handlers. I am not sure if you can or cannot use javascript code inside form tags but am sure that it is not a good programming practise to put code of two different language (js & html) together