How to Move Selected Option to the Top of a Drop Down Menu Using jQuery скачать в хорошем качестве

How to Move Selected Option to the Top of a Drop Down Menu Using jQuery

Learn how to rearrange options in a drop-down menu so that the selected option moves to the top. This guide includes step-by-step instructions and useful jQuery code snippets. --- This video is based on the question https://stackoverflow.com/q/63102992/ asked by the user 'Eoin' ( https://stackoverflow.com/u/9419876/ ) and on the answer https://stackoverflow.com/a/63103101/ provided by the user 'fdomn-m' ( https://stackoverflow.com/u/2181514/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Move selected option at top of drop down menu Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Introduction Have you ever found yourself in a situation where you wanted to rearrange options in a drop-down menu so that the selected one appears at the top? This is particularly useful in user interfaces that deal with large sets of options, making it easier for users to access what they need. In this guide, we'll walk you through how to move the selected option to the top of a drop-down menu using jQuery, applying it to a specific example of musical root keys. Understanding the Problem Consider a scenario where you have a drop-down menu containing various musical notes such as C, D, E, F# , and so on. Let's say you've selected the note E. The goal here is to rearrange the options so that E is at the top, followed by the rest of the options in their original order. Example Current order of options: C, C# , D, Eb, E, F, F# , G, Ab, A, Bb, B Desired order after selecting E: E, F, F# , G, Ab, A, Bb, B, C, C# , D, Eb Solution Overview To achieve this functionality, we will utilize jQuery to manipulate the options in the drop-down menu. Below are the key steps involved in the solution: Capture the selected option and its index. Identify the options that are before the selected one. Move those identified options to the end of the drop-down list. Step-by-Step Implementation Code Snippet Here’s the complete jQuery code to make this happen: [[See Video to Reveal this Text or Code Snippet]] HTML Structure You will also need the following HTML structure for the drop-down menu: [[See Video to Reveal this Text or Code Snippet]] Explanation of the Code Initialization: We start by defining the musical notes in an object tkopt. The notes are then populated into the <select> element with the ID tlist. Change Event: We register a change event on the select box that captures the currently selected option's index. This is done using $(this).find("option:selected").index();. Filter and Move: The code then filters through the options, checking which options are before the selected one. Those options are moved to the end of the drop-down using .appendTo(sel). Conclusion By following the above steps, you can easily rearrange drop-down menu options, helping enhance the user experience. Whether you're working on a music-related application or any other interface with a selection menu, this method will come in handy. Feel free to tweak the code as per your application's requirements! Happy coding!