Скачать или смотреть How to Delete All Non-Command Messages in Discord.js Bot Efficiently

Learn how to create a Discord bot with Node.js that filters out messages, allowing only specific commands, and properly deleting all others.
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This video is based on the question https://stackoverflow.com/q/63273538/ asked by the user 'nira' ( https://stackoverflow.com/u/14056369/ ) and on the answer https://stackoverflow.com/a/63273619/ provided by the user 'Daemon Beast' ( https://stackoverflow.com/u/10046076/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Creating a Discord Bot to Manage Messages: Keeping It Clean

If you're building a Discord bot using Node.js, you may encounter a common challenge: how to effectively manage messages in your channels. Specifically, you might want to set up your bot to delete any messages that are not either written by another bot or are not included in a list of allowed commands. Essentially, you want to create a "reverse-whitelist" where only certain messages can stay in the chat. This guide will walk you through the solution to this issue, ensuring that your bot works as intended while maintaining a clean chat environment.

Understanding the Problem

In the original code, the aim is to delete messages that do not conform to a pre-defined list of commands:

>fish

>fishinglvl

>leaderboard fishing

The logic was intended to filter out messages that are neither sent by bots nor correspond to any of these commands. However, the initial implementation had some flaws that made it ineffective.

Original Code Issues

This was the original code snippet that was causing the problem:

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

As you can see, the original logic used incorrect operators and conditions that did not work as expected. The use of the OR operator (|) is incorrect in this context and leads to the wrong results.

The Correct Approach

To address these issues, we need to modify the condition that checks whether a message is valid or not. The solution is to utilize the Array.includes() method, which checks if a certain value exists within an array.

Updated Code

Here’s how you can rewrite the logic correctly:

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

Explanation of the Changes

Logical Check with ! and includes: The logic now first checks whether the message content is NOT included in your list of allowed commands. If it's not, the bot will delete it.

Cleaner Code: Using an array to store valid commands helps in keeping the code neat and makes it easier to manage if you decide to add or remove commands in the future.

Summary

By following these steps and adjustments, you've successfully created a Discord bot that filters out unwanted messages, maintaining a cleaner chat environment for your server. The use of JavaScript's array methods not only simplifies your code but also enhances its efficiency and readability.

Key Takeaways

Use the Array.includes() method for checks against multiple values.

Ensure the logic is correctly structured to prevent unintended deletions.

Keep your code clean and organized for future updates and maintenance.

With this guide, you're well on your way to mastering Discord bot development with Node.js. Happy coding!