How to Attach Event Listeners to Multiple Elements in a Single Line?

Simultaneous Event Listener Attachment to Multiple Elements:

In web development, attaching event listeners to DOM elements is crucial for interactivity. When dealing with multiple elements, it can be tedious to add listeners individually. This article addresses the question of how to assign the same event listener to multiple elements in a single line.

Consider the following example:

<code class="javascript">element1.addEventListener("input", function() {
  // this function does stuff 
});

element2 &amp;&amp; element2.addEventListener("input", function() {
  // this function does stuff
});</code>

While this approach works, it requires writing separate lines for each element. A more efficient solution is to use element arrays. Here's how:

<code class="javascript">let elementsArray = document.querySelectorAll("whatever");

elementsArray.forEach(function(elem) {
    elem.addEventListener("input", function() {
        // This function does stuff
    });
});</code>

By placing the elements in an array, you can loop through each element and add the event listener to all of them in a single line. This technique provides a concise and convenient way to simplify your event listener attachment code.

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