To start learning JavaScript you must have basic knowledge of HTML tags as well as some programming knowledge. If you have knowledge of any programming language like C/C++ or VB/C# then it will be a plus point for you to learn JavaScript easily and quickly. But to deal with HTML tags you must know the basic HTML tags and their attributes to interact your JavaScript code with these HTML tags and attributes.
You can sharpen your skills of JavaScript by trying different types of examples to handle the events and styles of HTML controls.
document.ElementById("id").style.visibility = "hidden";
Java vs JavaScript
Do not confuse with the names Java and JavaScript coz both are entirely different languages. Java was developed by Sun Microsystems whereas JavaScript was developed under some standards of ECMA organization.Standards of JavaScript keep on progressing for maintaining the compatibility of JavaScript with modern Internet web browsers.
You can do number of interesting things by coding JavaScript in your web pages such as Drop-Down Menus with cool effects like fade in-fade out. You can display images like a slideshow and changing colors of fonts on mouse over-n-out and many more other creative things.
