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Learn how to achieve the same functionality as jQuery using pure JavaScript to focus on an input field when a specific div is clicked.
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How to Use JavaScript Instead of jQuery to Focus on Input Fields

When working on web development, you may come across situations where you have a specific behavior in mind, like focusing on an input field when a user clicks a particular div. While jQuery often simplifies such tasks, many developers are leaning towards using pure JavaScript for a more lightweight and faster approach. In this post, we will walk you through a straightforward solution to replicate jQuery functionality using JavaScript.

Problem Statement: Focusing Input on Click

In jQuery, focusing an input field when clicking on a designated div can be done quite easily with the following code:

[[See Video to Reveal this Text or Code Snippet]]

This code effectively triggers the focus event on the element with the ID of "autocomplete" when a user clicks on the element with the class "selection". But what if we want to achieve the same result without relying on jQuery? Let’s dive into the solution.

Solution: Using Pure JavaScript

Making this transition to JavaScript is not only possible but also relatively simple. Below are the steps to achieve this functionality using pure JavaScript.

Step 1: Select the Element

We will use document.querySelector to identify and select the div with the class "selection". This serves as our clickable element.

Step 2: Add the Click Event Listener

Next, we will add an event listener to the selected element to handle clicks. This is done with the addEventListener method.

Step 3: Focus on the Input Field

Inside the event listener’s callback function, we will also utilize document.querySelector to select the input field with the ID "autocomplete" and call the focus() method on it.

Here’s the complete code in pure JavaScript:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Code

Selecting the Div: document.querySelector('.selection') selects the element with the class "selection".

Event Listener: The .addEventListener('click', function() {...}) listens for click events on the selected element.

Focusing the Input: Inside the event, document.querySelector('# autocomplete').focus() ensures that the input field is focused when the div is clicked.

Conclusion

Transitioning from jQuery to pure JavaScript can not only enhance performance but also reduce dependency on libraries. With just a few lines of code, you now have a method to focus on an input field simply by clicking a designated div, all accomplished using JavaScript.

This practice not only prepares you for a more modern approach to web development but also empowers you to write cleaner, more efficient code in your projects.

Now, the next time you need a straightforward way to add interactivity to your forms, remember that with JavaScript, the possibilities are endless!