Fastest way to convert JavaScript NodeList to Array

A NodeList is a collection of nodes similar to an array. It is basically a collection of DOM elements. In order to work with a NodeList, we may convert it to a regular JavaScript array so that the features and flexibility of an array could be used. A NodeList is a host object and is not subject to the usual rules that apply to native JavaScript objects.

Approach: There are many ways to convert a NodeList to a JavaScript array but the fastest of all is a new method from ES6. In ES6, we can now simply create an Array from a NodeList using the Array.from() method. This method is used to create a shallow-copied new Array instance from an array-like or iterable object. The NodeList we are converting from in this case is the array-like object.

Syntax:

let my_arr = Array.from( given_nodelist )

Example: This example shows the use of the above-explained approach.

HTML

<body>
    <h1 style="color: green">
        GeeksforGeeks
    </h1>
    <div class="content primary">
      
        <p>
            A Computer Science portal for geeks.
            It contains well written, well thought
            and well explained computer science and
            programming articles, quizzes and
            placement guides.
        </p>
      
    </div>
    <div class="content secondary">
      
        <p>This example demonstrates the fastest
            way to convert from a NodeList to an array.
        </p>
      
    </div>
    <script>
        // This will act select all div DOM 
        elements in the page
        let nodelist =
            document.querySelectorAll('div');
          
        // This will convert the DOM NodeList
        // to a JavaScript Array Object
        let my_arr = Array.from(nodelist);
          
        // Display the array in the console
        console.log(my_arr);
          
        // Display all the values of the 
        // array in the console
        for (let val of my_arr) {
            console.log(val);
        }
    </script>
</body>

Output:

Last Updated : 24 Jan, 2023

Fastest way to convert JavaScript NodeList to Array

HTML

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