what is java

What Is Java.

JavaScript is the programming language of HTML and the Web.

Programming makes computers do what you want them to do.

JavaScript is easy to learn.

This tutorial will teach you JavaScript from basic to advanced.

JavaScript Introduction

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This page contains some examples of what JavaScript can do.

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JavaScript Can Change HTML Content

One of many JavaScript HTML methods is getElementById().

This example uses the method to "find" an HTML element (with id="demo") and changes the element content (innerHTML) to "Hello JavaScript":

Example

document.getElementById("demo").innerHTML = "Hello JavaScript";

Try it Yourself »

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JavaScript Can Change HTML Attributes

This example changes an HTML image by changing the src (source) attribute of an <img> tag:

The Light Bulb

  

Try it Yourself »