目前有一个需求就是在网页上放置一个音乐控制按钮，并且是在vue3项目里面。于是小白的我遇到了2个问题，第一个问题是如何实现没有进度条的播放按钮，这个网上有现成的代码，可以通过js代码切换不同的图片或者是别的样式，并不算难；第二个问题是如何在vue3项目中引入js文件，这个给刚刚接触vue3的我带来了一点麻烦。好在经过几个小时的研究终于解决了，下面给出具体解决方案：

首先声明这个功能只涉及了我的3个页面，一个是vue组件，另一个就是自建的本地js文件，还有一个就是vue项目自带的index.html文件。

首先在index.vue组件中，写入如下代码：

<button id="bgm-control" onclick="bgm_control()">
        <span id="off" style="display: flex" >BGM OFF</span>
        <svg t="1707990489554" id="icon-pause" style="display: flex" viewBox="-200 50 1500 900" version="1.1"
             xmlns="http://www.w3.org/2000/svg" p-id="1612" width="15" height="15">
          <path d="M872.802928 755.99406 872.864326 755.99406 872.864326 755.624646Z" fill="#ffffff" p-id="1613"></path>
          <path
              d="M744.055658 192.799074c-4.814656-2.889817-9.601682-5.251607-15.442714-5.251607-14.262842 0-25.758664 11.559267-25.758664 25.805736 0 10.285251 6.088672 18.519796 14.6957 23.195282 94.679359 55.247278 158.344355 157.787676 158.344355 275.30416 0 117.424386-63.605643 219.931015-158.159136 275.18034-8.29492 4.538363-15.442714 13.050224-15.442714 23.583115 0 14.261818 11.559267 25.820062 25.791409 25.820062 5.716188 0 10.252505-2.202155 15.22475-5.063319 109.871363-64.133669 183.764304-183.143157 183.764304-319.520197C927.074995 375.785665 853.495186 257.010515 744.055658 192.799074z"
              fill="#ffffff" p-id="1614"></path>
          <path
              d="M773.946432 511.867994c0-79.96524-43.344181-149.739373-107.821681-187.289594-2.920516-1.52268-9.785877-4.520967-14.603603-4.520967-14.325263 0-25.914206 11.589966-25.914206 25.89988 0 9.616008 5.096065 18.176988 12.865006 22.666232 49.839105 28.307719 83.45983 81.829703 83.45983 143.244448 0 62.472843-34.801621 116.817566-86.070284 144.750755-7.457856 4.538363-12.397355 12.803607-12.397355 22.188348 0 14.325263 11.588943 25.943882 25.882484 25.943882 6.090718 0.031722 13.33061-3.542686 13.33061-3.542686C729.048873 664.171772 773.946432 593.294514 773.946432 511.867994z"
              fill="#ffffff" p-id="1615"></path>
          <path
              d="M541.3694 124.672464c-10.846022-5.219885-23.740704-3.790326-33.215496 3.712555-0.435928 0.358157-46.423309 36.914748-97.195669 74.296123-88.308255 65.081251-114.036219 75.925227-119.257128 77.649498l-110.6194 0c-0.63752 0-1.243317 0.062422-1.879813 0.093121l-56.504922 0c-14.231119 0-25.775037 11.543917-25.775037 25.775037l0 411.697573c0 14.261818 11.512195 25.761734 25.775037 25.761734l189.511191 0.027629c5.096065 1.865487 29.395494 13.0799 107.761306 76.999698 45.613874 37.162388 86.505189 73.485665 86.940095 73.829496 5.841032 5.218862 13.298887 7.92039 20.820188 7.92039 4.349051 0 8.729825-0.930185 12.862959-2.764973 11.277858-5.064342 18.517749-16.252149 18.517749-28.619828 0 0 0.031722-97.257068 0.031722-132.212184 0.808412-2.484587 1.213641-5.127787 1.213641-7.863085 0-2.792603-1.245364-578.026786-1.245364-578.026786C559.110459 140.892891 552.214399 129.924071 541.3694 124.672464zM508.308423 726.470653c0 1.494027-0.467651 94.617961-0.467651 94.617961-13.889335-11.745509-29.332049-24.64019-45.240367-37.507242-104.59008-84.702124-130.505309-91.816149-148.030451-91.816149-0.372483 0-0.683569 0.091074-1.025353 0.091074s-0.652869-0.091074-1.025353-0.091074L170.394297 691.765223c-18.037818 0-22.248723-5.128811-22.248723-23.246447L148.145573 352.559685c0-12.32163 1.461281-20.057825 16.298198-20.057825l128.065747 0c17.090237 0 43.315528-6.991228 157.787676-90.839915 20.383236-14.914688 40.330544-29.938869 57.544601-43.113937 0 0 0.373507 445.207781 0.467651 521.368368C507.779374 722.028481 508.308423 724.234729 508.308423 726.470653z"
              fill="#ffffff" p-id="1616"></path>
        </svg>
        <span id="on" style="display: none;">BGM ON</span>
        <svg t="1707990489554" id="icon-play" style="display: none" viewBox="-200 50 1500 900" version="1.1"
             xmlns="http://www.w3.org/2000/svg" p-id="1612" width="15" height="15">
          <path d="M872.802928 755.99406 872.864326 755.99406 872.864326 755.624646Z" fill="#ffffff" p-id="1613"></path>
          <path
              d="M744.055658 192.799074c-4.814656-2.889817-9.601682-5.251607-15.442714-5.251607-14.262842 0-25.758664 11.559267-25.758664 25.805736 0 10.285251 6.088672 18.519796 14.6957 23.195282 94.679359 55.247278 158.344355 157.787676 158.344355 275.30416 0 117.424386-63.605643 219.931015-158.159136 275.18034-8.29492 4.538363-15.442714 13.050224-15.442714 23.583115 0 14.261818 11.559267 25.820062 25.791409 25.820062 5.716188 0 10.252505-2.202155 15.22475-5.063319 109.871363-64.133669 183.764304-183.143157 183.764304-319.520197C927.074995 375.785665 853.495186 257.010515 744.055658 192.799074z"
              fill="#ffffff" p-id="1614"></path>
          <path
              d="M773.946432 511.867994c0-79.96524-43.344181-149.739373-107.821681-187.289594-2.920516-1.52268-9.785877-4.520967-14.603603-4.520967-14.325263 0-25.914206 11.589966-25.914206 25.89988 0 9.616008 5.096065 18.176988 12.865006 22.666232 49.839105 28.307719 83.45983 81.829703 83.45983 143.244448 0 62.472843-34.801621 116.817566-86.070284 144.750755-7.457856 4.538363-12.397355 12.803607-12.397355 22.188348 0 14.325263 11.588943 25.943882 25.882484 25.943882 6.090718 0.031722 13.33061-3.542686 13.33061-3.542686C729.048873 664.171772 773.946432 593.294514 773.946432 511.867994z"
              fill="#ffffff" p-id="1615"></path>
          <path
              d="M541.3694 124.672464c-10.846022-5.219885-23.740704-3.790326-33.215496 3.712555-0.435928 0.358157-46.423309 36.914748-97.195669 74.296123-88.308255 65.081251-114.036219 75.925227-119.257128 77.649498l-110.6194 0c-0.63752 0-1.243317 0.062422-1.879813 0.093121l-56.504922 0c-14.231119 0-25.775037 11.543917-25.775037 25.775037l0 411.697573c0 14.261818 11.512195 25.761734 25.775037 25.761734l189.511191 0.027629c5.096065 1.865487 29.395494 13.0799 107.761306 76.999698 45.613874 37.162388 86.505189 73.485665 86.940095 73.829496 5.841032 5.218862 13.298887 7.92039 20.820188 7.92039 4.349051 0 8.729825-0.930185 12.862959-2.764973 11.277858-5.064342 18.517749-16.252149 18.517749-28.619828 0 0 0.031722-97.257068 0.031722-132.212184 0.808412-2.484587 1.213641-5.127787 1.213641-7.863085 0-2.792603-1.245364-578.026786-1.245364-578.026786C559.110459 140.892891 552.214399 129.924071 541.3694 124.672464zM508.308423 726.470653c0 1.494027-0.467651 94.617961-0.467651 94.617961-13.889335-11.745509-29.332049-24.64019-45.240367-37.507242-104.59008-84.702124-130.505309-91.816149-148.030451-91.816149-0.372483 0-0.683569 0.091074-1.025353 0.091074s-0.652869-0.091074-1.025353-0.091074L170.394297 691.765223c-18.037818 0-22.248723-5.128811-22.248723-23.246447L148.145573 352.559685c0-12.32163 1.461281-20.057825 16.298198-20.057825l128.065747 0c17.090237 0 43.315528-6.991228 157.787676-90.839915 20.383236-14.914688 40.330544-29.938869 57.544601-43.113937 0 0 0.373507 445.207781 0.467651 521.368368C507.779374 722.028481 508.308423 724.234729 508.308423 726.470653z"
              fill="#ffffff" p-id="1616"></path>
        </svg>
      </button>

然后自建一个js文件，写入如下函数：

function bgm_control() {
    var music = document.getElementById('music');
    var off = document.getElementById("off");
    var icon_pause = document.getElementById("icon-pause");
    var on = document.getElementById("on");
    var icon_play = document.getElementById("icon-play");

    if (music.paused) {
        music.play();
        off.style.display = "none";
        icon_pause.style.display = 'none'
        on.style.display = "flex";
        icon_play.style.display = 'flex'
    } else {
        music.pause();
        on.style.display = "none";
        icon_play.style.display = 'none'
        off.style.display = 'flex';
        icon_pause.style.display = 'flex';
    }
}

最后一步是在index.html文件引入js文件

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <link rel="icon" href="/favicon.ico">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Vite App</title>
  </head>
  <body>
    <div id="app"></div>
    <script type="module" src="/src/main.js"></script>
    <script src="src/assets/js/bgm_control.js"></script>
  </body>
<style>
    *{
        margin: 0;
        padding: 0;
    }
    body,html{
        margin: 0;
        padding: 0;
    }
</style>
</html>

实现效果