Kursinhalt

Introduction to React

1. Getting Started: ES6

Why React?Node.js and npm ES6 Variables ES6 Arrow Functions ES6 Map Method ES6 Destructuring ES6 Spread Operator ES6 Ternary Operator

2. Getting Started: JSX

JSX Introduction JSX Variables & Nested Elements JSX Embedding Expressions JSX Specifying Attributes Getting Started with React

3. React in Practice

Getting familiar with JSX Writing more Complex Elements using JSX Creating a React-Based Project Structure of a React Project

4. React Components

Introduction to Components Functional Components Creating React Components Importing Components

5. Controlling Data & Content

Passing Data into Components Conditional Rendering Loop Based Rendering Keys in Lists Event Handling Creating a TODO Application

6. Hooks

Introduction to Hooks Using the State Hook The Effect Hook Rules of Using Hooks Creating Custom Hooks Fixing the Todo Application

7. React Router

Introduction to React Router Route-Based Rendering Creating Navigation Bars Using Params

ES6 Arrow Functions

Arrow functions are a new addition to JavaScript that let us create inline functions without using the function and return keywords. They are simply a shorter syntax version of the normal JavaScript functions. JavaScript function:


              1234
            
let myFunc = function () {
    return 1 + 6;
}
console.log(myFunc());

ES6 function:

js

If the function has only one statement and returns a value, then we can remove the braces and the return keyword, hence the resultant code will be:

js

We can also pass arguments in the ES6 inline functions, using the syntax:


              12
            
let myFunc = (a, b) => a + b
console.log(myFunc(5, 4));

Task

Create an inline function named threeProduct that takes in three numbers / arguments namely a, b, c, and returns the product of those numbers. Call the function inside a console.log function and pass 1, 2 and 9 as arguments.

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Abschnitt 1. Kapitel 4

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