如何在保持瀏覽器相容性的同時動態變更 HTML5 中的視訊來源？

Dynamically Changing the Video Source in HTML5

In the pursuit of creating a universal video player, it is crucial to consider browser compatibility when dynamically changing the video source.

The Problem

Using multiple tags within a

Solution

To overcome this issue, it is recommended to use a single src attribute within the

Example Implementation

The following JavaScript code demonstrates the process of dynamically changing the video source using the src attribute and canPlayType() function:

var video = document.getElementById('video');
var source = document.createElement('source');
var supported = video.canPlayType('video/mp4');
if (supported == '' || supported == 'no') {
  supported = video.canPlayType('video/webm');
}
if (supported != '' && supported != 'no') {
  source.setAttribute('src', 'path/to/video.' + supported.replace('video/', ''));
  source.setAttribute('type', supported);
  video.appendChild(source);
  video.load();
  video.play();
} else {
  alert('Video file not supported.');
}

This approach simplifies the source-changing process, ensures cross-browser compatibility, and provides a consistent video playback experience.

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