CODEWITHSUNDEEP
javascript
misssn
misssn

Reputation: 11

reverseArray() codeademy using unshift()

// Using the .unshift() method

const reverseArray = arr => {
    let reversed = [];
    for (let i = 0; i < arr.length; i++) {
        reversed.unshift(arr[i]);
    }
    return reversed
}

if we want to reverse order the last element will become the first.How can this method reverse the order when it starts at first index?

Upvotes: 0

Views: 423

Answers (2)

Alireza Ahmadi
Alireza Ahmadi

Reputation: 9923

Based on this:

The unshift() method adds new items to the beginning of an array, and returns the new length

So in each iteration you are adding item to the beginning of an array and when iteration is done you have reversed array.

Upvotes: 2

Aman Sharma
Aman Sharma

Reputation: 964

"array.unshift()" is use to push items into array, you need to use "array.reverse()" to reverse the array.

const arr = [1, 2, 3];
arr.unshift(4, 5);
console.log(arr);
// reverse
arr.reverse(arr, "this is unshift");
console.log(arr, "this is reverse");

// output: arr [4, 5, 1, 2, 3]

Upvotes: 0

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