JavaScript Tutorial

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JavaScript: Get the First and Last Elements from an Array

JavaScript: Get the First and Last Elements from an Array: To get the first and last elements of an array in JavaScript, there are several ways. One way is to use the index of the first element (0) and the index of the last element (array.length - 1). Another way is to use the Array.shift() and Array.pop() methods. The Array.slice() method can also be used to get the first and last elements of an array. The Array.filter() method can be used to filter out all elements except the first and last elements. The Array.at() method can be used to access the first and last elements of an array by their index

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What are some ways to get the first and last elements of an array in JavaScript?

Here’s an example of how to get the first and last elements of an array in JavaScript:

<script>
    document.addEventListener('DOMContentLoaded', function () {
        const myArray = [11, 2, 33, 4, 65];
        const firstElement = myArray[0];
        const lastElement = myArray[myArray.length - 1];

        // Display output on the webpage
        document.getElementById('output').innerHTML = `
        <p>Original Array: [${myArray.join(', ')}]</p>
        <p>First Element: ${firstElement}</p>
        <p>Last Element: ${lastElement}</p>
      `;
    });
</script>

In this example, we first define an array myArray with some elements. Then, we use the index of the first element (0) and the index of the last element (myArray.length - 1) to get the first and last elements of the array. Finally, we display the output on the webpage using the document.getElementById() method.

There are several other ways to get the first and last elements of an array in JavaScript, such as using the Array.shift() and Array.pop() methods, the Array.slice() method, the Array.filter() method, and the Array.at() method

Output of JavaScript Get First and Last Item from Array

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