JavaScript overview
The fundamentals of JavaScript are covered in this course, along with how to use it to build interactive webpages and applications. You will discover how to construct code that instantly reacts to user input, uses templates to generate dynamic web pages, manages data management for online apps, and works with JSON data structures.
The most popular JavaScript features are thoroughly examined in this course, along with advice on how to write code more efficiently. Studying object-oriented programming approaches, working with arrays, maps, functions, and objects, modifying strings with regular expressions, developing asynchronous programs with Event Emitter, and developing modular JavaScript apps are all part of this course.
The fundamentals of JavaScript object-oriented programming (OOP), including class creation and inheritance, are covered in this course. Additionally, you will learn about methods, fields, and properties; how to initialize objects using constructors; and how to interact with OOP development frameworks like ReactJS or AngularJS.
This course offers an introduction to Ajax, the most widely used method for enhancing the interactivity of web applications. We'll demonstrate how simple it is to build dynamic web sites that react promptly to user interaction using HTML, JavaScript, and AJAX. Ajax's capabilities for data manipulation, form submission, and conditional processing will also be covered.
JSON is a common lightweight data format for storing structured data on the Web. This course introduces JSON syntax and demonstrates how to use JSON code to manipulate objects, arrays, and texts. When working with JSON data structures on the Web, performance considerations will also be covered. Audience Developers of JavaScript who are interested in learning more about the language's most well-liked features should take this course. Prerequisites JavaScript, CSS, and HTML basics are required.
Module 1: Setting Up the Environment
You learn about the Node.js platform and how to build interactive web applications in this module. You will learn how to set up a JavaScript environment, install Node.JS, and create a basic HTTP server.
Module 2: Using Functions
By writing two compact programs that heavily rely on functions, you will understand how functions are crucial to programming languages in this module. You will first develop a program that uses modular arithmetic to compute the square of a number, and then you will employ a function to compute the sum of two numbers.
Module 3: Employing Arrays and Objects
You will discover how to store data in JavaScript using objects and arrays in this module. Three planets' names will be stored in an array, and information about each planet will be stored in an object.
Module 4: Applying Ajax
This module provides an easy-to-understand example using JSON data structures to expose you to the well-known Ajax approach for making web applications more interactive. You'll discover how simple it is to design dynamic web sites that instantly react to user interaction using HTML, JavaScript, and AJAX.
Module 5: Utilizing JSON
You will learn how to use the well-known JSON data structure for JavaScript in this final module. You will investigate its capabilities and use it to build a straightforward API that retrieves planet-related data from a database.
JavaScript Benefit
JavaScript is simple to understand and learn. Users and developers will both appreciate how simple the structure is. It can also be easily implemented, which will save web designers a ton of money when producing dynamic content.
Speed – Because JavaScript is a "interpreted" language, it compiles more quickly than other programming languages like Java. JavaScript is another client-side script that speeds up program execution by removing the need for server connections.
JavaScript is always executed in a client context to save bandwidth and hasten execution, regardless of where it is hosted.
Interoperability — Many programmers prefer utilizing JavaScript to build a range of apps since it works well with other programming languages. It can be found on any website or in a script written in another computer language.
Server Load Because JavaScript is client-side, data validation may be carried out right in the browser rather than being sent to the server. In the event of any error, the complete website does not need to be reloaded. The browser only updates the predetermined portion of the page.
JavaScript Disadvantages
Cannot Debug – While certain HTML editors permit debugging, their efficiency is inferior to that of C or C++ editors. Additionally, because the browser doesn't provide any errors, the developer has trouble identifying the problem.
Unexpected rendering halt A single error in the JavaScript code can cause the entire page to stop rendering. To the user, JavaScript appears to be missing. However, the browsers are quite tolerant of these errors.
Customer-side Security The JavaScript code is visible to the user and could be abused by others. These operations can entail making anonymous use of the source code. Furthermore, it is quite easy to add code to a website that compromises the security of data sent through the website.
Top comments (1)
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