In programming, an array is a collection of elements or items. You can store data as elements in Array and get them back when you need them as you like them. In this video, I will show you all about arrays and array methods in JavaScript. You'll learn about complex data handling, and the most commonly used array methods, and more.

JavaScript array methods crash course covers following topics:
- What is Variable in JavaScript
- Why We Need Arrays in JavaScript
- How to Create Arrays in JavaScript
- How to Use Nested Arrays in JavaScript
- How to get index of Array in JavaScript
- How to Get Value of Elements in Array in JavaScript
- How to loop through Arrays in JavaScript
- How Destructuring works in JavaScript
- How to Assign and Access elements from array using destructuring in JS
- How to access multiple values from array using destructuring
- How to skip element in array using destructuring
- Arrays have properties and methods
- Array length property
- Array push method to insert element in array
- Array unshift method to insert element in array
- Array pop method to remove element
- Array shift method to remove element from array
- Array slice method to copy / clone elements from array
- Copy / Clone arrays by using spread operator in JavaScript
- Merge arrays by using concat array method and spread operator
- Join elements from array by using array join method
- Array splice method in JavaScript
- Array indexOf method
- Array includes method to find element
- Array find method to find element from array
- Array findIndex method in javaScript
- Array map method in JavaScript
- Array filter method in JavaScript
- Array reduce method in JavaScript
- Array every method in JavaScript
- Array some method in JavaScript
- Array reverse method in JavaScript
- Array at method in JavaScript
- Array sort method in JavaScript
- Array flat method in JavaScript
- Mutable and Immutable array methods in JavaScript

Arrays in JavaScript are just objects, and they can be mutated. Many array methods mutate or change array. Array methods that change array, are mutable methods. such as pop, push, shift. Array methods that do not change actual array, but return new array are immutable array methods.
such as map and filter methods.

Practice map method, filter method, reduce method because these are methods you gonna use most in React JS and in JavaScript projects. These also make good JavaScript interview questions.
For example difference between map, filter and reduce array methods. In ReactJS, usually map method is used to populate records and apply something for each element in record and filter method is used to delete or exclude element from array.

JavaScript Arrays Crash Course
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