JavaScript programming language free keyboard shortcuts Basic Information
Definition:
JavaScript is a high-level, interpreted programming language that is primarily used for creating interactive effects within web browsers. It enables dynamic content, control multimedia, animate images, and pretty much everything else.
Key Features:
- Syntax: C-like syntax with object-oriented capabilities.
- Dynamic Typing: Variables can hold values of any data type without declaring the type explicitly.
- First-Class Functions: Functions are treated as objects, allowing them to be assigned to variables, passed as arguments, and returned from other functions.
- Prototypal Inheritance: Objects can inherit properties and methods from other objects.
- Event-Driven Programming: Capable of responding to user interactions or browser-generated events.
Table of Contents
Common Uses:
- Client-Side Scripting: Enhancing user interfaces and web pages.
- Server-Side Scripting: Using Node.js to build server-side applications.
- Web Development: Frameworks like React, Angular, and Vue.js rely on JavaScript.
Example Code
Here’s a simple example demonstrating basic JavaScript functionality:
<!DOCTYPE html>
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<h1 id="greeting">Hello, World!</h1>
<button onclick="changeGreeting()">Click me</button>
<script>
function changeGreeting() {
document.getElementById('greeting').innerHTML = 'Hello, JavaScript!';
}
</script>
</body>
</html>Shortcut Keys Table
| Action | Windows/Linux | Mac |
|---|---|---|
| Comment Code | Ctrl + / | Cmd + / |
| Duplicate Line | Ctrl + Shift + D | Cmd + Shift + D |
| Go to Definition | F12 | F12 |
| Find | Ctrl + F | Cmd + F |
| Find and Replace | Ctrl + H | Cmd + Option + F |
| Format Code | Shift + Alt + F | Shift + Option + F |
| Open Developer Tools | Ctrl + Shift + I or F12 | Cmd + Option + I or F12 |
| Toggle Comment | Ctrl + / | Cmd + / |
| Run Code (Node.js) | node filename.js in terminal | node filename.js in terminal |
These shortcuts are common in many code editors and integrated development environments (IDEs) like Visual Studio Code, Sublime Text, and others. They help streamline development tasks and improve productivity.
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