How to use Vue form processing to implement video upload and playback of the form

How to use Vue form processing to implement video uploading and playback of forms

Overview:
In the modern Internet era, with the rapid development of video content, video There are increasing demands for uploading and playback. Implementing video upload and playback functions on web pages is a problem faced by many developers.

Vue.js, as a popular JavaScript framework, can help us process forms and handle different types of data. Therefore, combined with the characteristics of Vue.js, we can easily implement video uploading and playback in the form. Function.

Technical preparation required:

• Vue.js framework
• HTML5 native video player

Specific implementation steps:

1. Create a Vue instance and initialize the data.

   new Vue({
     el: '#app',
     data: {
    videoFile: null,  // 用于保存用户上传的视频文件
    videoUrl: ''  // 用于保存视频文件的URL
     },
     methods: {
    handleFileUpload(event) {
      this.videoFile = event.target.files[0];
    },
    handleVideoUpload() {
      // 这里可以编写上传视频文件的代码
    },
    handleVideoPlay() {
      // 这里可以编写播放视频文件的代码
    }
     }
   })

2. Create a form in HTML and add a button to trigger the file upload and a button to play the video.

   <div id="app">
     <form @submit.prevent="handleVideoUpload">
    <input type="file" accept="video/*" @change="handleFileUpload">
    <button type="submit">上传视频</button>
     </form>
     
     <button @click="handleVideoPlay">播放视频</button>
     
     <video controls>
    <source :src="videoUrl" type="video/mp4">
     </video>
   </div>

3. Implement the file upload function. We can use Vue's FormData object and combine it with the axios library to upload files. In the handleVideoUpload method, we create a FormData object, pass the video file selected by the user as a parameter into the FormData object, and send the request to the server.

   handleVideoUpload() {
     let formData = new FormData();
     formData.append('video', this.videoFile);
     
     axios.post('/upload', formData)
    .then(response => {
      // 上传成功后，服务器会返回一个视频文件的URL
      this.videoUrl = response.data.videoUrl;
    })
    .catch(error => {
      console.log(error);
    });
   }

4. Implement video playback function. In the handleVideoPlay method, we can directly bind the videoUrl to the src attribute of the HTML5 video player to realize the video playback.

   handleVideoPlay() {
     // 检查是否有视频文件可播放
     if (this.videoUrl !== '') {
    let videoPlayer = document.querySelector('video');
    videoPlayer.play();
     }
   }

Summary:
By combining the form processing function of Vue.js, we can easily implement the video upload and playback functions of the form. In the above sample code, we take advantage of Vue's two-way data binding feature to save the video file uploaded by the user in the data of the Vue instance, and upload the video file to the server through the axios library. After the upload is successful, the server will return the URL of a video file. We save the URL in the data of the Vue instance and bind it to the HTML5 native video player to realize the video playback function.

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