Lectures List

Java script introduction

Java script is lightweight, interpreted, web scripting programming language.
javascript is also called dynamic programming language which is used to create dynamic web pages.
javascript support object-oriented paradigms.

How to write javascript code?

To write javascript code we require one code editor and web browsers to run javascript code.

Code Editors

Web browsers

  • Google chrome
  • Microsoft edge
  • Mozilla firefox
  • Opera
  • UC Browser and many more

The first program in javascript

There are two way to write js code and run code

  • Using <script> tag
  • Using a file with .js extension

Using <script> tag:

<html>
<head>
<title>Js code using script tag</title>
</head>
<body>
<script>
console.log(“welcome to javascript”);
</script>
</body>
</html>

Using file with .js extension

document.write(“Welcome to javascript”);

save this file as first.js

create new html file with extension .html as first.html

<html>
<head>
<title></title>
</head>
<body>
<script src=”first.js”></script>
</body>
</html>