What is JavaScript ?
JavaScript is a lightweight, cross-platform, single-threaded, and interpreted compiled programming language. It is also known as the scripting language for webpages. It is well-known for the development of web pages, and many non-browser environments also use it.
JavaScript is a weakly typed language (dynamically typed). JavaScript can be used for Client-side developments as well as Server-side developments. JavaScript is both an imperative and declarative type of language. JavaScript contains a standard library of objects, like Array, Date, and Math, and a core set of language elements like operators, control structures, and statements.
Example: This example shows the alert by the use of alert method provided by JavaScript.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,
initial-scale=1.0">
<title>Custom Alert Box</title>
<style>
body {
display: flex;
justify-content: center;
width: 100vw;
margin-top: 20px;
}
.alert {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background-color: #f8d7da;
color: #721c24;
padding: 15px 20px;
border: 1px solid #f5c6cb;
border-radius: 5px;
}
</style>
</head>
<body>
<button onclick="showAlert()">Show Alert</button>
<script>
function showAlert() {
const alertBox = document.createElement('div');
alertBox.className = 'alert';
alertBox.textContent = 'This is a custom alert box.';
document.body.appendChild(alertBox);
}
</script>
</body>
</html>
Output:
There are others frontend frameworks are used to create a website so that the UI can be more better and it could be fast running website.
Learn Web Development Basics with HTML CSS and JavaScript
Web development refers to the creating, building, and maintaining of websites. It includes aspects such as web design, web publishing, web programming, and database management. It is the creation of an application that works over the internet i.e. websites.
The word Web Development is made up of two words, that is:
- Web: It refers to websites, web pages, or anything that works over the internet.
- Development: It refers to building the application from scratch.
Table of Content
- Web Development can be classified into two ways
- Frontend Development
- Popular Frontend Technologies
- What is HTML?
- What is CSS?
- What is JavaScript?