How to hide the full screen control bar in javascript

JavaScript is the most popular programming language in Web development, mainly used to achieve interactivity and dynamics of web pages. Among them, hiding the full-screen control bar is also one of the functions that JavaScript can achieve. In this article, we will discuss how to hide the full screen control bar using JavaScript.

In modern web design, full-screen video and audio have become very popular design trends. However, for some web applications or websites, unauthorized full-screen video or audio may be disruptive to users. At this time, hiding the full-screen control bar becomes a necessary function. By hiding the full-screen control bar, users will not be able to freely select volume, pause, or exit full-screen mode in full-screen mode. This feature can greatly reduce user misoperations and create a better experience for web content.

Generally speaking, hiding the full-screen control bar requires JavaScript to be scripted. Here are several ways to implement this feature:

1. Using H5 Video API
   H5 Video API is a new attribute in HTML5 through which the behavior of the video player can be controlled. Among them, the full-screen control bar can be hidden by setting the "controls" attribute value to "false". This change applies to all HTML5 videos.

<video id="myVideo" width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>

<script>
var myVideo = document.getElementById("myVideo");
myVideo.controls = false;
</script>

2. Using the Fullscreen API
   The Fullscreen API is a new development in the HTML5 specification, through which any element can be accessed in full-screen mode. Among them, the full-screen control bar can be hidden by setting the "allowfullscreen" attribute value to "false".

<video id="myVideo" width="320" height="240" allowfullscreen>
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>

<script>
var myVideo = document.getElementById("myVideo");
myVideo.allowfullscreen = false;
</script>

3. Use CSS styles
   The full-screen control bar can also be hidden through CSS styles. The specific method is as follows:

<video id="myVideo" width="320" height="240" class="my-video">
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>

<style>
.my-video::-webkit-media-controls {
  display:none !important;
}
</style>

Through the above method, we can easily hide the full-screen control bar. However, it should be noted that the above methods need to obtain the full-screen element from the HTML DOM before controlling it. Therefore, we need to first understand some common DOM manipulation methods.

To sum up, if we want to hide the full-screen control bar through JavaScript, we need to consider the following aspects: which method to use to perform the hiding operation, which DOM elements need to be operated, and how to modify the DOM elements. For users who rely on web applications for a long time, using JavaScript to hide the full-screen control bar is a good way to improve the user experience.

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