How to dynamically update an image's source with jQuery

Learn how to pass the image source to a function using jQuery to update another image on your webpage. Perfect for interactive projects!
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How to Dynamically Update an Image's Source with jQuery

In web development, creating interactive elements can significantly enhance the user experience. One common scenario is the need to change the source of an image when another image is clicked. If you have multiple thumbnail images that enable users to select a larger or different image when clicked, you might be wondering how to capture the clicked image's source and use it to update a larger display image.

In this guide, we will explore a straightforward solution using jQuery, allowing you to pass the image source dynamically to another image on your webpage.

The Problem

You have several thumbnail images, each of which, when clicked, should update a larger image's source. In the provided HTML structure, each thumbnail is linked to specific video timepoints but needs to adjust the source of a larger image dynamically based on the thumbnail clicked.

Sample HTML Structure

Here is a simplified structure to illustrate the concept:

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

The Solution

The key to updating the larger image's source lies in jQuery’s ability to capture events and manipulate the DOM. Here's a step-by-step guide to achieve this.

Step 1: Setting Up jQuery

First, ensure that you have included jQuery in your HTML document. This will allow us to use its powerful features easily.

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

Step 2: Implementing the Click Event

Next, you’ll want to set up a click event handler that allows you to capture the source of the clicked thumbnail and use it to change the source of the large image. Here’s the jQuery code you need:

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

Breakdown of the Code

$(document).ready(function() {...}): Ensures that the DOM is fully loaded before executing any jQuery code.

$(".ib").click(function() {...}): Sets up a click event for all images with the class ib.

let clickedImage = $(this).attr("src");: This line captures the src attribute of the image that was clicked (this refers to the clicked element).

$("# large-image").attr("src", clickedImage);: Updates the src attribute of the image with the ID large-image to the new value stored in clickedImage.

Example in Action

Now, when you add the above code to your HTML page, clicking any of the thumbnail images will change the source of the large display image to match the thumbnail that was clicked. Make sure your images are correctly sourced to see this in action!

Complete HTML Example

Putting it all together, your HTML might look something like this:

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

Conclusion

By following these simple steps, you can make your webpage more interactive and user-friendly. The use of jQuery simplifies event handling and DOM manipulation, making it easier to implement functionality like changing image sources dynamically. For any further questions or enhancements, feel free to reach out. Happy coding!