var colors =["red","blue","car","green"];var carIndex = colors.indexOf("car");//get "car" index//remove car from the colors array
colors.splice(carIndex,1);// colors = ["red","blue","green"]
var colors =["red","blue","car","green"];var carIndex = colors.indexOf("car");//get "car" index//remove car from the colors array
colors.splice(carIndex,1);// colors = ["red","blue","green"]
const cars =['farrari','Ice Cream'/* It is not an car */,'tata','BMW']//to remove a specific element
cars.splice(colors.indexOf('Ice Cream'),1);//to remove the last element
cars.pop();
//remove any item from arrayconst data =['first','second','last'];const filtered_data = data.filter((item)=>return item !=='second');console.log(filtered_data)// ['first', 'last']
var myArray =["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];//removing element using splice method -- //arr.splice(index of the item to be removed, number of elements to be removed)//Here lets remove Sunday -- index 0 and Monday -- index 1
myArray.splice(0,2)//using filter methodlet itemToBeRemoved =["Sunday","Monday"]var filteredArray = myArray.filter(item=>!itemToBeRemoved.includes(item))
array.splice(indexToStartFrom, numbersOfItemsToBeDeleted);// for deleting only one element
array.splice(index,1);//index = index of element in an array;
var colors =["red","blue","car","green"];// op1: with direct arrow function
colors = colors.filter(data=> data !="car");// op2: with function return value
colors = colors.filter(function(data){return data !="car"});
how to delete an element of an array in javascript
//you can use two functions depending of what you want to do:let animals1 =["dog","cat","mouse"]delete animals1[1]/*this deletes all the information inside "cat" but the element still exists
so now you'll have this:*/console.log(animals1)//animals1 = ["dog", undefined, "mouse"]//if you want to delete it completely, you have to use array.splice:let animals2 =["dog","cat","mouse"]
animals2.splice(1,1)/*the first number means the position from which you want to start to delete
and the second is how much elements will be deleted*/console.log(animals2)//animals2 = ["dog", "mouse"]/*Now you don't have undefined
If you did this:*/let animals3 =["dog","cat","mouse"]
animals3.splice(0,2)//you'll have this:console.log(animals3)//animals 3 = "mouse"/*This happens because I put a 2 in the second parameter so it deleted
two elements from position 0
Try copying this code in your console and whatch*/
let fruit =['apple','banana','orange','lettuce'];// ^^ An example array that needs to have one item removed
fruit.splice(3,1);// Removes an item in the array using splice() method// First argument is the index of removal// Second argument is the amount of items to remove from that index and on
var colors =["red","orange","yellow","green"];
colors = colors.splice(3,1);// Starts removing from the third element, and deletes 1 element// Array.splice(startingElement, elementYouWantToRemove);
let numbers =[1,2,3,4]// to remove last elementlet lastElem = numbers.pop()// to remove first elementlet firstElem = numbers.shift()// both these methods modify array while returning the removed element
// Create a function to do it easily and how many time you want!constdeleteFromArray=(array, value)=>{let newArray = array.filter(item=> item !== value)return newArray;}var array =[1,2,3,4]const newArr =deleteFromArray(array,2)console.log('Changed array:', newArr);// Changed array: [ 1, 3, 4 ]
pop -Removesfrom the Endof an Array.shift-Removesfrom the beginning of an Array.splice- removes from a specific Array index.filter- allows you to programatically remove elements from an Array.
//Warning !//Array elements can be deleted using the JavaScript operator delete.//Using delete leaves undefined holes in the array.//Use pop() or shift() insteadconst fruits =["Banana","Orange","Apple","Mango"];delete fruits[0];Warning!// >> ["undefined", "Orange", "Apple", "Mango"];//if you find this answer is useful ,//upvote ⇑⇑ , so can the others benefit also . @mohammad alshraideh ( ͡~ ͜ʖ ͡°)
//using filter() method => it returns a new array
data =[1,2,3,4,5,6];let filteredData = data.filter((i)=>{return i >2});console.log(filteredData)// [3, 4, 5, 6]
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 elementconsole.log(removedElement);// 'sleep'console.log(dailyActivities);// ['work', 'eat']
/*
* C program to delete an element from array at specified position
*/
#include <stdio.h>
#define MAX_SIZE100//this code does not literally delete an element //this does rewrite the rest of the array over the element to be deleted //and reduceing the count by one//https://codeforwin.org/2015/07/c-program-to-delete-element-from-array.html
int main(){
int arr[MAX_SIZE];
int i, size, pos;/* Input size and element in array */printf("Enter size of the array : ");scanf("%d",&size);printf("Enter elements in array : ");for(i=0; i<size; i++){scanf("%d",&arr[i]);}/* Input element position to delete */printf("Enter the element position to delete : ");scanf("%d",&pos);/* Invalid delete position */if(pos <0|| pos > size){printf("Invalid position! Please enter position between 1 to %d", size);}else{/* Copy next element value to current element */for(i=pos-1; i<size-1; i++){
arr[i]= arr[i +1];}/* Decrement array size by 1 */
size--;/* Print array after deletion */printf("
Elementsof array after deleteare: ");for(i=0; i<size; i++){printf("%d ", arr[i]);}}return0;}