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Learn to create jQuery bookmarklets that execute without displaying `[object Object]` by wrapping your code in a self-executing function.
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How to Execute jQuery in a Bookmarklet Without Returning an Object

If you're a web developer or a coding enthusiast, you may have come across the challenge of creating bookmarklets using jQuery. Sometimes, you might find that your jQuery bookmarklet displays an unwanted [object Object] when executed. This can be frustrating, especially when all you want to do is manipulate elements on the current page.

In this guide, we’ll dive into this problem and guide you on how to modify your jQuery code so that it operates seamlessly within a bookmarklet, executing the intended actions without returning an extraneous value.

The Problem at Hand

When you try to use jQuery in a bookmarklet, you typically prepend your code with javascript: to run it in the browser. However, due to jQuery’s design:

When your jQuery code is executed, it returns an object.

If this returned object isn’t handled properly, the browser displays it as [object Object].

This is not the behavior you expect in a bookmarklet, where you want the code to run and not output any results.

Understanding the Vanilla JS Approach

To better understand the situation, let’s compare the behavior of jQuery with Vanilla JavaScript. Consider the two snippets:

Vanilla JS:

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

This code runs without returning anything visible — it simply executes and removes the targeted images.

jQuery:

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

In this case, the jQuery code returns an object, leading to the unwanted output when used in a bookmarklet.

Solution: Wrapping Your jQuery Code

To resolve this issue with your jQuery bookmarklet, you can prevent the return value from being displayed by wrapping your code in a self-executing function. Here’s how to do it:

Step 1: Create a Self-Executing Function

You can define a self-executing function that encapsulates your jQuery code like this:

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

Step 2: Create Your Bookmarklet

Copy the above code snippet.

Open your bookmarks manager or bookmarks bar in your web browser.

Add a new bookmark and paste the code into the URL field.

Name the bookmark whatever you like.

Step 3: Test Your Bookmarklet

Go to a webpage with the images you want to remove, and click your newly created bookmarklet. It should execute the jQuery code without displaying [object Object], effectively removing the specified images while remaining silent in the output.

Conclusion

By wrapping your jQuery code in a self-executing function, you can efficiently use it in bookmarklets without encountering problematic return values. This ensures that your bookmarklets serve their intended purpose without causing any confusion.

With these simple adjustments, you can seamlessly enhance your web navigation with powerful jQuery bookmarklets. Happy coding!