If you need to remove an element from an array in Javascript, then you can use one of the following five (5) options:
Option 1 – Use splice to remove an element
Example 1 using splice:
var colors = ["red","blue","car","green"];
var carIndex = colors.indexOf("car");
colors.splice(carIndex, 1);
// colors = ["red","blue","green"]
Example 2 using splice:
var myArray = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
// Remove Sunday -- index 0 and Monday -- index 1
myArray.splice(0,2)
Option 2 – Use filter to remove an element
var myArray = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
let itemToBeRemoved = ["Sunday", "Monday"]
var filteredArray = myArray.filter(item => !itemToBeRemoved.includes(item))
Option 3 – Use pop to remove an element
let dailyActivities = ['work', 'eat', 'sleep', 'exercise'];
// remove the last element
dailyActivities.pop();
console.log(dailyActivities); // ['work', 'eat', 'sleep']
// remove the last element from ['work', 'eat', 'sleep']
const removedElement = dailyActivities.pop();
// get removed element
console.log(removedElement); // 'sleep'
console.log(dailyActivities); // ['work', 'eat']
Option 4 – Use remove to remove an element
array.remove(number);
Option 5 – Change length to remove elements
var arr = [1, 2, 3, 4, 5, 6];
arr.length = 4;
// [1, 2, 3, 4]
