remove value in array js code example

Example 1: javascript remove first item from array

var colors = ["red", "green", "blue"];
var red=colors.shift();
//colors is now ["green","blue"];

Example 2: remove item from array javascript

const array = [2, 5, 9];

console.log(array);

const index = array.indexOf(5);
if (index > -1) {
  array.splice(index, 1);
}

// array = [2, 9]
console.log(array);

Example 3: js remove from array by value

const index = array.indexOf(item);
if (index !== -1) array.splice(index, 1);

Example 4: js remove if

ar = [1, 2, 3, 4];
ar = ar.filter(item => !(item > 3));
console.log(ar) // [1, 2, 3]

Example 5: remove object in array javascript

//1
someArray.shift(); // first element removed
//2
someArray = someArray.slice(1); // first element removed
//3
someArray.splice(0, 1); // first element removed
//4
someArray.pop(); // last element removed
//5
someArray = someArray.slice(0, a.length - 1); // last element removed
//6
someArray.length = someArray.length - 1; // last element removed

Example 6: pop up element from specific index in array

let items = ['a', 'b', 'c', 'd'];
let index = items.indexOf('a')
let numberOfElementToRemove = 1;
if (index !== -1) { items.splice(index,numberOfElementToRemove)}