Course Content
Introduction to JavaScript
4. Conditional Statements
Introduction to JavaScript
Array Methods
Arrays are versatile for storing and retrieving data. Retrieving data using square brackets []
is called indexing.
However, there are various methods available for working with arrays.
Adding Elements
There are different ways to add elements to an array.
Push
The push()
method adds a new value to the end of the array:
Unshift
The unshift()
method works like the push()
method, but it inserts the value at the beginning of the array.
Indexing
You can append a new value by indexing:
Indexing allows you to assign a value to a specified index, reassign a previous value, and more:
To create a new element in the array without mistakes, you can use the push(value)
method or the arr[arr.length] = value
expression:
Deleting Elements
Sometimes, you may need to delete elements from an array. This can be done in different ways.
Pop
The pop()
method deletes the last element in an array and allows you to save it to another variable:
Shift
The shift()
method works like pop()
, but it removes the first element from an array:
How can we add an element to the end of the array?
Select a few correct answers
How can we remove the last element in the array?
Select the correct answer
Everything was clear?