How to add or remove value from javascript array

By | November 14, 2019
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JavaScript arrays are used to store multiple values in a single variable. An array is a special variable, which can hold more than one value at a time. Using an array literal is the easiest way to create a JavaScript Array.

var array_name = [item1item2, …];

JavaScript arrays allow you to group values and iterate over them. You can add and remove array elements in different ways.

Removing Elements from End of a JavaScript Array

var ar = [1, 2, 3, 4, 5, 6];
ar.pop(); // returns 6
console.log( ar ); // [1, 2, 3, 4, 5]

Removing Elements from Beginning of a JavaScript Array

var ar = ['zero', 'one', 'two', 'three'];
ar.shift(); // returns "zero"
console.log( ar ); // ["one", "two", "three"]

Removing Elements from Middle of a JavaScript Array

function arrayRemove(arr, value) {
   return arr.filter(function(ele){
       return ele != value;
   });
}

var result = arrayRemove(array, 6);
// result = [1, 2, 3, 4, 5, 7, 8, 9, 0]