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><pathd="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><pathd="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><pathd="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 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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><pathd="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 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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