You will find array operations in JavaScript here

// Insertion -  insert an element at the begining of array

function InsertAtBegining(arr,element){
    // move all the elements from last to one position next to create an empty space at the begining for insertion

    for(let i =arr.length-1; i>=0; i--){
        arr[i+1] = arr[i];
        if(i==0){
             // Now insert at the empty space in the begining 
            arr[i] = element;
        }

    }
   return arr;
}



// Insertion - Insert an element the end of the array

function InsertAtEndOfArray(arr, element){
    arr[arr.length]= element;
    return arr;
}


// Insertion - Insert an element at a given index in an array

function insertAtGivenIndex(arr,index,element){

    for(let i =arr.length; i>=index-1; i--){
        arr[i+1] = arr[i];       
    }
    arr[index-1] = element;
    return arr;
}



// Deletion - Delete an element at a given index in an array

function DeleteAnElement(arr,index){

    for(let i=index-1; i<arr.length-1; i++){

        arr[i]= arr[i+1];
    }

    return arr;

}



// Search − Searches an element using the given index or by the value.

function searchElement(arr,value){

    for(let i=0; i<=arr.length; i++){

        if(arr[i]==value){
            return i;
        }
    }
    return false;

}

// Update − Updates an element at the given index.


function udpateElement(arr,index,value){

    for(let i=0; i<=arr.length; i++){

        if(i==index-1){
           arr[i]= value;
        }
    }

    return arr;

}

// Traverse − print all the array elements one by one.

function TraverseArray(arr){

    for(let i=0; i<=arr.length; i++){

        console.log(arr[i]);
    }

}


let arr =[2,1,22,1,4,5,5,6];

//let result1= InsertAtBegining(arr,10);
//console.log(result1);

//let result2= InsertAtEndOfArray(arr, 20);
//console.log(result2);

//let result3 = insertAtGivenIndex(arr,8,300);
//console.log(result3);

//let deleteEle =  DeleteAnElement(arr,3);
//console.log(deleteEle);

//let searchEle = searchElement(arr,300);
//console.log(searchEle);

//let updateEle=  udpateElement(arr,3,33);
//console.log(updateEle)

//TraverseArray(arr);