How Can You Detect DOM Element Addition in Browser Extensions Despite the Deprecation of Mutation Events?

Observing DOM Element Addition in Browser Extensions

Modern browser environments deprecate the use of mutation events, making it challenging to detect when new elements are added to the DOM in browser extension scenarios. To address this issue, an alternative approach is to resort to continuous monitoring via the setInterval() function.

Monitoring with setInterval()

The following code sample demonstrates how to implement continuous monitoring using setInterval():

<code class="javascript">function checkDOMChange() {
  // Check for any new elements being inserted or modifications.

  // Schedule the next iteration in 100 milliseconds.
  setTimeout(checkDOMChange, 100);
}</code>

This function initiates a loop where it checks for DOM changes and schedules the next iteration every 100 milliseconds. The 1/10th of a second interval should suffice for most non-real-time observation needs.

Additional Considerations

While the setInterval() approach provides a viable solution, it's important to consider its potential impact on performance. Constant DOM polling can consume significant CPU resources, leading to user dissatisfaction. Therefore, it's crucial to tailor the monitoring frequency to the specific requirements of your extension.

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