How to Prevent Repeated Function Execution in JavaScript Trading Bots Using Flags

Learn to effectively control function executions in JavaScript trading bots by using flags to toggle between signals, preventing unwanted repetitions of Buy and Sell actions.
---

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: How do I prevent one function from repeating until another function's if condition is met and it runs?

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Prevent Repeated Function Execution in JavaScript Trading Bots Using Flags

If you're developing a crypto trading signals bot using JavaScript, you may encounter issues with your bot sending repeated signals. In particular, your bot should send a Buy signal when the relative strength index (RSI) drops below 30 and a Sell signal when it rises above 70. However, you might find that the bot continuously sends the same signal until the condition changes, which is not ideal. In this post, we’ll explore how to utilize flags to control the execution of your bot and prevent consecutive Signals from being sent without an opposite signal in between.

The Problem

You are making a crypto trading bot that interacts with Twitter to send trading signals based on the RSI value of Ethereum. The challenge is to prevent your bot from sending the same signal repeatedly. You want it to avoid sending multiple Buy signals while the RSI is below 30, as well as preventing multiple Sell signals above 70. Instead, you’d like your bot to alternate signals appropriately.

The Solution

To achieve this, we can implement a flag mechanism in your code. A flag can hold a boolean value (true or false) to control whether your bot should send a new signal based on the last action taken. Here's a step-by-step method to incorporate this:

Step 1: Set Up a Signal Flag

Start by creating a buySellFlag variable. This flag will indicate whether the last signal was a Buy or Sell.

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

Step 2: Modify the RSI Update Function

Update the rsiUpdater function to check the buySellFlag. The logic will be as follows:

If the RSI is above 70 and the buySellFlag is true (indicating the last action was Buy), proceed to execute the Sell signal.

If the RSI is below 30 and the buySellFlag is false, execute the Buy signal.

Here’s how you can implement this:

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

Step 3: Additional Improvements

Here are some recommendations to improve your code quality:

Use let instead of var: This is a better practice in JavaScript for managing scope.

Utilize arrow functions: They can make your code more readable.

Conclusion

By implementing this flag mechanism, you can ensure that your JavaScript trading bot will not send repeated signals for Buy and Sell actions. The use of flags will enable seamless alternation between the signals without the risk of sending multiple signals too frequently.

If you have any questions or need further clarification, feel free to reach out. Happy coding!