How to Make Hidden Class Work for All Table Rows in JavaScript

Discover how to configure the `hidden class` in table rows effectively using JavaScript, ensuring your search filter works flawlessly.
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How to Make Hidden Class Work for All Table Rows in JavaScript

When building a web application, having a functional search/filter feature in tables can significantly improve user experience. However, it can be frustrating when that feature isn't working as intended. One common scenario is setting a hidden class to hide table rows that don't match the search criteria. If you've encountered a situation where only the first row seems to be affected, you’re not alone!

In this guide, we will discuss a solution to ensure that all table rows that do not match the filter will receive the hidden class. Let's explore how we can achieve this step-by-step!

The Problem

You have a table that you're filtering based on user input. The intention is to hide all rows that don't match the search criteria by adding a hidden class. However, when observing the implementation, you notice that only the first line is being modified - the others remain visible.

Sample Code Breakdown

You likely started with the following JavaScript code:

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

In this code snippet, querySelector is only targeting the first row of the table. This is where the issue lies.

The Solution

To fix this problem, we need to change the way we target the table rows. Instead of using querySelector, we will use querySelectorAll which allows us to select multiple elements at once.

Step 1: Update the Selector

Change the following line:

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

To:

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

This adjustment captures all rows within the table body.

Step 2: Loop Over Each Row

Now that we have selected all rows, we will loop through them. Here’s the revised code:

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

Explanation of the Updated Code

querySelectorAll: Fetches all table rows instead of a single one, allowing for iteration.

forEach: Loops through each row to evaluate whether the content matches the search input.

Conditional Check: Adds the hidden class when the row doesn't match the search term and removes it when it does. This ensures that your filter dynamically updates as the user types.

Conclusion

By replacing querySelector with querySelectorAll and looping through each row, you can effectively apply the hidden class across all table rows. This simple adjustment ensures that your table filtering works seamlessly and provides a better experience for users.

Now you can confidently implement search functionality in your tables without worrying about hidden class discrepancies!

If you found this guide helpful, feel free to share it and leave your feedback in the comments below!