How to implement an audio player using Vue

Vue is a popular JavaScript framework with an efficient component-based development model and responsive data binding capabilities, suitable for developing richly interactive Web applications. In our actual development, the customization and development of UI components is a common requirement. This article will focus on how to use Vue to implement an audio player.

First, we need to install Vue.js. We can download the Vue.js file on the Vue official website, or install it using npm or yarn:

npm install vue

After the installation is complete, we can start building our audio player.

HTML part

In the HTML part, we need to first declare an audio tag <audio></audio> and all audio player control components. We can see that we use several buttons to control various states of the player respectively. These buttons will be bound to vue components. We can also use a div to display the music list, which will also be bound by the vue component. We also bound the playlist so we can add and remove music dynamically.

<div id="app">
    <div class="audio-player">
        <audio src="" id="audio" ref="audio"></audio>
        <!-- 播放按钮 -->
        <button class="button" v-on:click="playAudio"><i class="fa fa-play"></i></button>
        <!-- 暂停按钮 -->
        <button class="button" v-on:click="pauseAudio"><i class="fa fa-pause"></i></button>
        <!-- 上一个按钮 -->
        <button class="button" v-on:click="prevAudio"><i class="fa fa-chevron-left"></i></button>
        <!-- 下一个按钮 -->
        <button class="button" v-on:click="nextAudio"><i class="fa fa-chevron-right"></i></button>
        <div class="playlist">
            <div class="list-item" v-for="(audio,index) in audioList" v-bind:key="index" v-on:click="changeAudio(index)">
                {{audio.name}}
            </div>
        </div>
    </div>
</div>

Definition of Vue component

Next, we need to define the Vue component and implement the method we just defined in HTML:

var vm = new Vue({
    el: '#app',
    data: {
        audioList: [], // 音乐列表
        currentAudio: { // 当前音乐信息
            src: '',
            name: '',
            artist: '',
        },
        currentIndex: 0, // 当前播放音乐在列表中的索引
        playStatus: false, // 播放状态
    },
    methods: {
        // 播放音乐
        playAudio: function() {
            this.playStatus = true
            this.$refs.audio.play()
        },
        // 暂停音乐
        pauseAudio: function() {
            this.playStatus = false
            this.$refs.audio.pause()
        },
        // 播放下一首
        nextAudio: function() {
            this.currentIndex++
            if (this.currentIndex > this.audioList.length - 1) {
                this.currentIndex = 0
            }
            this.currentAudio = this.audioList[this.currentIndex]
            this.$refs.audio.src = this.currentAudio.src
            this.playAudio()
        },
        // 播放上一首
        prevAudio: function() {
            this.currentIndex--
            if (this.currentIndex < 0) {
                this.currentIndex = this.audioList.length - 1
            }
            this.currentAudio = this.audioList[this.currentIndex]
            this.$refs.audio.src = this.currentAudio.src
            this.playAudio()
        },
        // 切换音乐
        changeAudio: function(index) {
            this.currentIndex = index
            this.currentAudio = this.audioList[this.currentIndex]
            this.$refs.audio.src = this.currentAudio.src
            this.playAudio()
        }
    }
})

The core of the Vue component isdata and methods attributes. The data attribute contains a set of variables containing music information and playlist information. They are monitored and updated at any time to ensure synchronization of page views and data. The methods attribute contains a set of methods to update our music player as needed.

As we described before, we use an array of music information audioList, and another object currentAudio, which contains the currently playing music Complete information. We also define the currentIndex variable to track the currently playing song, and use playStatus to switch the playback status.

Our methods include: playAudio and pauseAudio control the playback (or pause) of music, nextAudio and prevAudio To switch to the next or previous music in the playlist respectively, changeAudio to switch to the selected music.

Finally, use the $refs method to reference the audio tag audio we previously declared in the HTML section, so that its play and pause methods can be called.

Bind Music List

We can now bind our player to the music list. Appropriate music files can be selected online and added to the music list. code show as below.

vm.audioList = [
    {
        name: 'A Chill Sound',
        artist: 'Faster san',
        src: 'music/1.a-chill-sound.mp3'
    },
    {
        name: 'Calm Breeze',
        artist: 'Suraj Bista',
        src: 'music/2.calm-breeze.mp3',
    },
    {
        name: 'Happiness',
        artist: 'Erick McNerney',
        src: 'music/3.happiness.mp3'
    }
];
vm.currentAudio = vm.audioList[vm.currentIndex];
vm.$refs.audio.src = vm.currentAudio.src;

We can enjoy our music now. This article shows how to create a simple music player using Vue.js, and we see how to use its data binding and method calling capabilities to create dynamic applications. When implementing features, it is crucial to organize your code neatly and clearly, with security and ease of use in mind for end-to-end functionality.

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