In Javascript, we do not have any array.remove() method for deleting the element. Instead of any method Javascript, have different ways to delete an item from an array.
In this article, we will see different ways to delete an item from an array in Javascript.
- Using for loop and push Method
- Using pop() Method
- Using shift() Method
- Using splice() Method
- Using filter() Method
- Using delete Operator
- Using Lodash _.remove() Method
Note: There are some other methods that are created by JavaScript inbuilt methods.
Method 1: Using for loop and push() Method
This method will not mutate the original array. First you have to create an empty() array and then loop over the new array and push only those element which you want.
Example:
Javascript
let arr = ['gfg', 'GFG', 'g', 'neveropen'];const arrayWithoutGFG = [];for (let i = 0; i < arr.length; i++) { if (arr[i] !== 'GFG') { arrayWithoutGFG.push(arr[i]); }}// arr is sameconsole.log(arr);console.log(arrayWithoutGFG); |
[ 'gfg', 'GFG', 'g', 'neveropen' ] [ 'gfg', 'g', 'neveropen' ]
Method 2: Using Pop() Method
This method is used to delete the last element of the array and return the deleted item as an output. Removing the element decreases the length of the array.
Example: In this example, the pop() method is used for deleting the element of an array.
Javascript
function myFunc() { let arr = ['gfg', 'GFG', 'g', 'neveropen']; let name = arr.pop(); console.log(name); console.log(arr.length)}myFunc(); |
neveropen 3
Method 3: Using shift() Method
This method is used to delete an element from the beginning of an array. This method is used to return the first element of an array. It also decreases the length of the original array.
Example: In this example, the shift() method is used for deleting the first element of an array.
Javascript
function myFunc() { let arr = ['gfg', 'GFG', 'g', 'neveropen']; let name = arr.shift(); console.log(name); console.log(arr.length)}myFunc(); |
gfg 3
Method 4: Using splice() Method
This method is used for deleting the existing element or replacing the content of the array by removing/adding a new element.
Example: In this example, the splice method will be used to delete the item from an array.
Javascript
function myFunc() { let myFruit = ["apple", "banana", "grapes", "strawberry"]; const removed = myFruit.splice(2, 2, "guava"); // Removed element in the array console.log(removed); // Length of the original array after deleting console.log(myFruit.length); // Original array after deleting the array console.log(myFruit); }myFunc(); |
[ 'grapes', 'strawberry' ] 3 [ 'apple', 'banana', 'guava' ]
Method 5: Using filter() Method
This method returns the new array. Those array element that satisfies the condition of function is only passed on to the new array. This method does not change the original array.
Example: In this example, we will use the filter() method to delete an item from an array.
Javascript
const arr = [2, 7, 9, 15, 19];function isPrime(n) { for (let i = 2; n > i; i++) { if (n % i === 0) { return false; } } return n > 1;}console.log(arr.filter(isPrime)); |
[ 2, 7, 19 ]
Method 6: Using delete Operator
This operator is more specifically used to delete JavaScript object properties.
Example: In this example, we will use JavaScript delete operator to delete items from an array.
Javascript
const arr = [2, 7, 9, 15, 19];delete arr[3];console.log(arr); |
[ 2, 7, 9, <1 empty item>, 19 ]
Method 7: Using Lodash _.remove() Method
The _.remove() method is used to remove all elements from the array that predicate returns True and returns the removed elements.
Step to install:
npm install lodash
Example:
Javascript
const _ = require("lodash"); let arr = [1, 2, 3, 4, 5];let even = _.remove(arr, function (n) { return n % 2 == 0;});console.log('Original Array ', arr);console.log('Removed element array ', even); |
Output:
Original Array [ 1, 3, 5 ] Removed element array [ 2, 4 ]
