Sorting Table Rows by status and deadline in JavaScript/jQuery

Описание: Learn how to dynamically sort table rows by multiple attributes including `status` and `deadline` using JavaScript/jQuery.
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This video is based on the question https://stackoverflow.com/q/75244353/ asked by the user 'Laurens Swart' ( https://stackoverflow.com/u/4065947/ ) and on the answer https://stackoverflow.com/a/75244453/ provided by the user 'Gihan' ( https://stackoverflow.com/u/9521619/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Sort Table Rows by status and deadline in JavaScript/jQuery

Dynamically sorting table rows can enhance the user experience by organizing data in a way that makes it easier to read and understand. In this guide, we'll tackle a common problem: sorting HTML table rows based on two attributes: status and deadline.

The Challenge

Imagine having a table where each row represents a task with attributes like:

Deadline - represented as a Unix timestamp (integer)

Status - represented as an integer where 1 indicates a higher priority than 2

Our goal is to sort the rows by status (with status 1 appearing first) and then by deadline in ascending order (earlier deadlines at the top). For instance, we want to transform this unordered arrangement:

Todo 4 (status 2, deadline 1622222222)

Todo 3 (status 2, deadline 1611111111)

Todo 2 (status 1, deadline 1644444444)

Todo 1 (status 1, deadline 1633333333)

Into the following ordered format:

Todo 1

Todo 2

Todo 3

Todo 4

Understanding the Solution

To achieve this sorting, we'll utilize jQuery for easy DOM manipulation and enhance the existing sorting function. Here’s how we can update the sorting logic:

1. Initial Setup

First, make sure jQuery is included in your HTML file:

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

2. The Sorting Function

Here's how the new sort_table function looks:

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

3. Breaking Down the Code

Sorting Logic

The sort function first compares status. If keyA (from row A) is less than keyB (from row B), it indicates that the row with status 1 should come before status 2.

If the statuses are equal, it moves on to compare deadline. Rows with earlier timestamps are placed higher in the table.

Appending Sorted Rows

Finally, after sorting, we append the rows back into the table. This ensures the displayed order reflects the new sorting criteria.

Conclusion

By implementing the above function, you can easily sort a table based on multiple criteria, improving the usability and efficiency of your data presentation. Now, as rows are dynamically altered, simply call the sort_table() function to re-sort the table automatically!

With practice and experimentation, you'll be able to adjust the sorting criteria based on your specific needs. Happy coding!