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"> neveropen </h1> <div class="content primary"> <p> A Computer Science portal for neveropen. 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:
