In this lecture, Harkirat presents a comprehensive guide to Custom Hooks in React The discussion begins by contrasting class-based and functional component approaches. It then delves into the rationale behind the advent of custom hooks, highlighting their role in maintaining cleaner code. The session concludes with hands-on exploration of diverse examples, providing practical insights into effectively implementing custom hooks.
Note: Today’s lecture notes are comprehensive, surpassing the depth of previous lectures. Consider them an all-inclusive resource for a thorough understanding and effective utilization of Custom Hooks in your React applications.
The ternary operator, also known as the conditional operator, is a concise way to write an if-else statement in a single line. It has the following syntax:
condition ? expressionIfTrue : expressionIfFalse;
Here's how it works:
condition is evaluated. If it is true, the expression before the : (colon) is executed; otherwise, the expression after the : is executed.Let's look at a simple example:
const isRaining = true;
const weatherMessage = isRaining ? "Bring an umbrella" : "Enjoy the sunshine";
console.log(weatherMessage);
In this example, if isRaining is true, the weatherMessage will be set to "Bring an umbrella"; otherwise, it will be set to "Enjoy the sunshine."
The ternary operator is often used for simple conditional assignments, making the code more concise. However, it's important to use it judiciously, as overly complex ternary expressions can reduce code readability.