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Edabit Javascript: Javascript Explained

Table of Contents

Javascript is a programming language that is becoming increasingly popular as the language of choice for web developers. It is used to create interactive web pages, as well as create dynamic applications. This article covers the basics of Javascript, different Javascript versions, tips for writing programs, debugging and troubleshooting, working with data types, functions, objects and arrays, how to integrate HTML, CSS and Javascript and advanced features of the language. We’ll also take a look at some of the most popular libraries for programming with Javascript, tips for becoming a better developer and useful resources for learning more about the language.

What Is Javascript?

Javascript is a high-level programming language developed by Netscape in 1995. It is used primarily for web applications and it is currently the most popular language on the web. Programming with Javascript allows developers to add interactive elements to web pages, such as games, menus, animations, forms and additional content. With Javascript, developers are able to create websites that are more dynamic and engaging.

Javascript is a versatile language that can be used to create a wide variety of applications, from simple web pages to complex web applications. It is also used to create mobile applications, desktop applications, and even server-side applications. Javascript is a powerful language that can be used to create powerful and interactive web experiences.

Understanding the Basics of Javascript

To get started with Javascript, it’s important to understand the basics. The language consists of statements that are written in plain English that developers use to tell the browser what they want it to do. Developers use different functions and objects to define different types of behavior. A basic understanding of HTML and CSS is also helpful when writing with Javascript.

In addition to understanding the language, it is important to be familiar with the different types of libraries and frameworks available. These libraries and frameworks provide developers with a set of tools to help them create more complex applications. Knowing how to use these tools can help developers create more efficient and powerful applications.

Different Versions of Javascript

Javascript has several different versions, each with its own features and syntax rules. The current version, ES6, was released in June 2015. It contains features such as new data types, classes, modules and more. ES6 can be used to create powerful web applications that are easier to maintain.

ES6 also includes a number of new features that make it easier to write code. These include arrow functions, template literals, and the spread operator. These features make it easier to write code that is more concise and easier to read. Additionally, ES6 is more compatible with other programming languages, making it easier to integrate with existing code.

Writing Your First Program

To get started with writing your first program in Javascript, it’s important to understand the syntax rules and know how the different JavaScript functions work together. You can start by creating a simple website or writing a script that prints out a message on the console when it is run. As you learn more about the language, you can begin creating larger applications.

It is also important to understand the different data types available in JavaScript, such as strings, numbers, and objects. Knowing how to use these data types correctly will help you create more complex programs. Additionally, you should familiarize yourself with the different methods and functions available in JavaScript, as these will help you write more efficient code.

Common Javascript Syntax Rules

When writing with Javascript, there are some basic syntax rules that developers should be aware of. One example is that statements end with a semi-colon (;). All variables should be declared with the keyword var. All strings should be surrounded by single or double quotes. JavaScript is case sensitive, so it’s important to pay attention to capitalization.

In addition, all functions should be declared with the keyword function. It is also important to remember to use parentheses when calling a function. When using objects, the syntax should be written in the form of objectName.propertyName. Finally, all comments should be written with two forward slashes (//).

Tips for Debugging and Troubleshooting

Debugging and troubleshooting are important parts of writing code and making sure applications run properly. A few useful tips for debugging and troubleshooting include using the Chrome Developer Tools to look for errors, using console.log() to help identify problems, using breakpoints in your code and testing code in different browsers.

It is also important to use version control systems such as Git to track changes in your code and make sure you can easily revert back to a previous version if needed. Additionally, it is helpful to use debugging tools such as debuggers and profilers to help identify and fix performance issues. Finally, it is important to document your code and create a plan for testing and debugging before you start coding.

Working With Variables and Data Types

Data types are an important part of working with variables in Javascript. The built-in data types include numbers, strings, booleans and objects. It is important to pay attention to the different data types when interacting with variables in your code. You can also create custom data types known as classes.

When working with variables, it is important to understand the scope of the variable. Variables can be declared as global or local, and this will determine where the variable can be accessed in your code. Global variables can be accessed anywhere in the code, while local variables are only accessible within the scope they are declared in.

Working With Functions, Objects and Arrays

Javascript also allows developers to work with functions, objects and arrays. Functions allow developers to write reusable code that can be used multiple times throughout an application. Objects are collections of properties and methods that allow developers to work with data in a structured way. Arrays are similar to objects but allow developers to store data in an indexed list.

Integrating HTML, CSS and Javascript

Integrating HTML, CSS and Javascript is a fundamental part of web development. HTML is used to provide structure to web pages, while CSS is used to style elements and adjust the layout. Javascript is used to add interactivity to web pages by manipulating content and responding to user input.

Advanced Features of Javascript

Javascript offers a variety of advanced features that can be used to create powerful applications. Features such as AJAX allow developers to send data back and forth between the server and client without having to reload the entire page. Developers can also use libraries such as jQuery to simplify complex JavaScript tasks.

Common Libraries for Working With Javascript

There are several popular libraries for working with Javascript that allow developers to quickly and easily create powerful applications. Popular libraries include jQuery, React, Angular, Node.js and Underscore.js. Each library has its own set of features and syntax rules.

Tips for Becoming a Better Developer

There are lots of tips that can help developers become better at writing JavaScript code. One good tip is to practice coding every day. It’s also important to read other people’s code, learn new techniques, pay attention to code details and focus on writing quality code.

Finding Resources to Learn More About Javascript

There are lots of online resources available to help people learn more about coding with JavaScript. Popular online resources include websites such as Edabit and Codecademy, as well as books such as Professional JavaScript for Web Developers from Wrox publishing. It’s also helpful to attend coding conferences and workshops.

Sarang Sharma

Sarang Sharma

Sarang Sharma is Software Engineer at Bito with a robust background in distributed systems, chatbots, large language models (LLMs), and SaaS technologies. With over six years of experience, Sarang has demonstrated expertise as a lead software engineer and backend engineer, primarily focusing on software infrastructure and design. Before joining Bito, he significantly contributed to Engati, where he played a pivotal role in enhancing and developing advanced software solutions. His career began with foundational experiences as an intern, including a notable project at the Indian Institute of Technology, Delhi, to develop an assistive website for the visually challenged.

Written by developers for developers

This article was handcrafted with by the Bito team.

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