First Example - JavaScript

 
- JavaScript is the programming language of HTML and the Web.

- JavaScript is easy to learn.

- This tutorial will teach you JavaScript from basic to advanced.

1. Example

 

 

<!DOCTYPE html>

<html>

<body>

 

<h2>My First Example</h2>

 

<button type="button"

onclick="document.getElementById('demo').innerHTML = 'Hello World'">

Click me to display Hello World</button>

 

<p id="demo"></p>

 

</body>

</html> 

 

 

2. Why Study JavaScript?

JavaScript is one of the 3 languages all web developers must learn:

   1. HTML to define the content of web pages

   2. CSS to specify the layout of web pages

   3. JavaScript to program the behavior of web pages

Web pages are not the only place where JavaScript is used. Many desktop and server programs use JavaScript. Node.js is the best known. Some databases, like MongoDB and CouchDB, also use JavaScript as their programming language.

3. Did You Know?

JavaScript and Java are completely different languages, both in concept and design.

JavaScript was invented by Brendan Eich in 1995, and became an ECMA standard in 1997.
ECMA-262 is the official name of the standard. ECMAScript is the official name of the language.