Monday, May 27, 2024

Javascript Course : Part - 3

Javascript Course : Part - 3

 21. ClosuresA closure is a function that retains access to its lexical scope, even when the function is executed outside that scope.javascriptfunction outerFunction() { let outerVariable = "I'm outside!"; function innerFunction() { console.log(outerVariable); // Can access outerVariable } return innerFunction; } let closure = outerFunction(); closure(); // Outputs: I'm...
Javascript course - 2

Javascript course - 2

 11. Promises and Async/AwaitPromises are used to handle asynchronous operations in JavaScript.Promisesjavascriptlet promise = new Promise((resolve, reject) => { let success = true; // Change to false to see the rejection if (success) { resolve("Promise resolved!"); } else { reject("Promise rejected!"); } }); promise.then((message) => { console.log(message); // Outputs:...
1. Introduction to JavaScript

1. Introduction to JavaScript

 1. Introduction to JavaScriptJavaScript can be added to an HTML document using the <script> tag. Here's a simple example of a complete HTML document with JavaScript:html<!DOCTYPE html> <html> <head> <title>JavaScript Example</title> </head> <body> <h1>Hello, JavaScript!</h1> <p id="demo"></p> <script> document.getElementById("demo").innerHTML = "Hello, World!"; </script> </body> </html> 2. VariablesVariables are used...

Wednesday, March 13, 2024

React Navigation for multiple pages

React Navigation for multiple pages

 In React Native, React Navigation is a popular library used for managing navigation in your application. It provides several navigation solutions, including Stack Navigator, Tab Navigator, Drawer Navigator, and more. Here's a basic example of setting up navigation for multiple pages using React Navigation:First, make sure you have React...

Monday, January 1, 2024

What is the purpose of JSX in React? Does it offer any performance benefits over writing plain HTML/CSS/JS?

What is the purpose of JSX in React? Does it offer any performance benefits over writing plain HTML/CSS/JS?

 JSX in React is a syntax extension that allows you to write HTML-like code directly within JavaScript. Its purpose is to make the creation of React components more intuitive and simpler by combining the power of JavaScript with the structure of HTML.JSX provides several advantages:Simplified Syntax: JSX makes it...

Thursday, July 27, 2023

Securing your CDN: Why and how should you use SRI

Securing your CDN: Why and how should you use SRI

 Securing your Content Delivery Network (CDN) is essential to protect your website's visitors from potential security risks, such as content tampering and data breaches. One effective method to enhance the security of your CDN-served content is by using Subresource Integrity (SRI).Subresource Integrity (SRI) is a security feature that allows...
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