How to useArray.filter() Method in Javascript
Array.filter() method returns a filtered array that removes the element which returns false for the callback function.
Example: In this example, we will be using the filter() method to get the first and the last element of the array.
// Array
let s = [3, 2, 3, 4, 5];
function Gfg() {
// Storing the first item and second in a variable
let [f, l] = s.filter((item, i) =>
(i == 0) || (i == s.length - 1));
// Printing output to screen
console.log("first element is " + f);
console.log(" Last element is " + l);
}
Gfg(); // Calling the function
Output
first element is 3 Last element is 5
Get the first and last item in an array using JavaScript
JavaScript array is used to store multiple elements in a single variable. It is often used when we want to store a list of elements and access them by a single variable. We will learn how to get the first & last element in an array in JavaScript, along with understanding their implementation through the examples.
These are the following approaches:
Table of Content
- Approach 1: Using length property in JavaScript
- Approach 2: Using Array.pop() and Array.shift() Method
- Approach 3: Using Array.slice() Method
- Approach 4: Using Array.filter() Method
- Approach 5: Using Spread Operator
- Approach 6: Using Array.at() Method
- Approach 7: Using Array.find() Method