Javascript Adding Style To The Text Of Console Log Duplicate

When working with JavaScript, it's common to log messages and data to the console for debugging purposes or to provide feedback during development. However, if you find yourself logging duplicate messages, it can quickly become challenging to differentiate between them. Fear not! In this guide, we'll show you how to add style to the text of console log duplicates in JavaScript, making it easier to identify and distinguish them.

One straightforward way to add style to console log messages is by using the `%c` placeholder in the log message and passing the CSS styles as a second argument to the `console.log()` method. This method allows you to customize the appearance of the text that follows the `%c` placeholder with CSS styles.

Here's a simple example to illustrate this technique:

console.log('%cDuplicate Message', 'color: red; font-weight: bold;');

In this example, we're using the `%c` placeholder to indicate that styles should be applied to the text "Duplicate Message." We then pass the CSS styles as the second argument to change the color to red and make the text bold.

To apply this technique specifically to log duplicate messages, you can create a helper function that tracks the messages already logged and applies distinctive styles to duplicates. Let's walk through an example implementation:

const loggedMessages = {};

function logStyledMessage(message) {
  if (loggedMessages[message]) {
    console.log(`%c${message}`, 'color: purple; font-style: italic;');
  } else {
    console.log(message);
    loggedMessages[message] = true;
  }
}

// Example usage
logStyledMessage('First message');
logStyledMessage('Second message');
logStyledMessage('First message');

In this code snippet, we maintain an object `loggedMessages` to keep track of the messages already logged. The `logStyledMessage` function checks if a message has been logged before. If it's a duplicate, the message is displayed with purple color and italic style; otherwise, it's logged as normal, and the message is marked as logged.

By using this approach, you can easily differentiate between duplicate messages in your console output, making it clearer and more organized when debugging your JavaScript code.

Remember, adding style to console log messages can enhance the readability of your logs and help you spot duplicates quickly. Experiment with different CSS styles to find what works best for your project and coding style. Happy coding!