如何更改此功能，以便每次单击只能播放一首随机歌曲? (JavaScript) [英] How do I alter this function so that only one, random song can be played at a time with each click? (JavaScript)

问题描述

我实质上是在使用HTML，CSS和原始JavaScript构建音乐生成器/播放器应用，其中，每次用户针对特定音乐类型单击特定div时，都会播放该类型的新歌曲.为了生成随机歌曲，我创建了以下JS函数:

I'm essentially building a music generator/player app using HTML, CSS, and vanilla JavaScript where every time a user clicks a particular div with respect to a particular genre of music, a new song from that genre is played. To generate a random song, I created this JS function:

const randomizeSongs = playlist => {
    let song = playlist[Math.floor(Math.random() * playlist.length)];
    song.play();
  }

我遇到的问题是当我尝试使用以下代码时:

The issue I've run into is when I tried using the following code:

const pop = document.querySelector(".pop") // Div containing audio elements
pop.addEventListener("click", (e) => {
      const popSongs = document.querySelectorAll(".pop audio");
      randomizeSongs(popSongs);
})

该函数每次点击都会生成一首新歌曲，但我之前单击时生成的先前歌曲并没有停止播放.如何修改randomizeSongs函数，以便每次新点击一次只能播放一首随机歌曲?

the function generated a new song with each click like I wanted to, but the previous songs generated with previous clicks didn't stop playing. How can I modify the randomizeSongs function so that only one random song can play at a time with each new click?

推荐答案

我认为您正在寻找pause( https://www.w3schools.com/jsref/met_audio_play.asp ).

I think you're looking for pause (https://www.w3schools.com/jsref/met_audio_play.asp).

还没有尝试过，但是看起来像这样:

Haven't tried this but it would look like:

let previousSong;
const randomizeSongs = playlist => {
    if (previousSong) {
        previousSong.pause();
    }
    let song = playlist[Math.floor(Math.random() * playlist.length)];
    song.play();
    previousSong = song;
}

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