How Can You Detect Device Rotation in JavaScript?

Orientational Awareness in JavaScript: Detecting Device Rotation

In the realm of mobile browsing, it's crucial to adapt to the changing orientations of devices. JavaScript empowers us to monitor these changes and tailor our applications accordingly.

Traditionally, CSS media queries have been utilized to detect changes in orientation. However, the web has evolved, and we now have access to more refined techniques using JavaScript's screen orientation API.

Embracing screen.orientation

The screen.orientation API provides a comprehensive interface for detecting orientation changes. It employs the screenOrientation.onchange event as its trigger. To harness this capability, follow these steps:

Code Snippet:

window.addEventListener("DOMContentLoaded", () => {
  const output = document.getElementById("o9n");
  const displayOrientation = () => {
    const screenOrientation = screen.orientation.type;
    output.innerHTML = `The orientation of the screen is: ${screenOrientation}`;
    // Additional logic for handling different orientations
  };

  if (screen && screen.orientation !== null) {
    try {
      window.screen.orientation.onchange = displayOrientation;
      displayOrientation();
    } catch (e) { output.innerHTML = e.message; }
  }
});

Additional Tips:

• Use a HTML element to display the detected orientation for debugging purposes.
• Implement logic to handle specific orientations, such as triggering actions when the device is in landscape mode.
• Note that the orientation API may not be supported in all browsers. Handle unsupported devices gracefully.

By leveraging JavaScript's screen.orientation API, we gain the power to monitor orientation changes and optimize our applications for seamless experiences across different device positions.

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