我正在尝试将我制作的 HTML/Javascript drumkit 添加到我的 Gatsby 站点。目前，按下按键时不会播放任何声音，并且从 audio.play() 返回的 promise 会卡在“待定”状态。
我已经将其用于基本的 HTML/JS 以及标准的 React 应用程序。但是当我试图将它合并到我的 Gatsby 网站时，我遇到了以下关于返回 promise 的问题，并且没有声音播放。
[[PromiseStatus]]: "pending"
[[PromiseValue]]: undefined
整个 Gatsby 站点的 git 仓库在这里(目前只有开发版本)https://github.com/mfuller22/FullerStackProgramming
我遇到问题的特定页面的目录在这里 https://github.com/mfuller22/FullerStackProgramming/tree/master/src/pages/Projects/DrumKit
我将在几个小时内添加我的 React 代码。我目前没有带它。
componentDidMount() {
document.addEventListener("keydown", this.handleKeyDown.bind(this));
}
handleKeyDown = (event) => {
if (event.keyCode === parseInt(this.props.id, 10))
this.playSound()
}
playSound = () => {
const audio = document.getElementById('sound'+this.props.id);
const key = document.querySelector(`div[data-key="${this.props.id}"]`);
audio.currentTime = 0;
console.log(audio)
var playPromise = audio.play();
console.log(playPromise)
playPromise.catch(error => {
audio.play();
});
key.classList.add('playing');
};
render() {
const { id, letter, sound } = this.props
return (
<div
id={'key'+id}
data-key={id}
onClick={() => this._playSound}
onKeyDown={() => this._playSound}
onTransitionEnd={() => this._onTransitionEnd}
className="key">
<kbd>{letter}</kbd>
<span className="sound">{sound}</span>
<audio id={'sound'+id}>
<source src={sound} type="audio/wav" />
</audio>
</div>
);
}
我希望 promise 以已解决状态返回，但目前 promise 状态为 pending，并且 promise 值未定义。
最佳答案
我最终通过以下方式处理了这个问题，而不是将所有内容都移至 React 组件，保留我原来的 HTML 和 JS 代码，并像下面那样包含它们(确保 import 音频文件并将导入引用为 src):
import React, { Component } from 'react';
import Helmet from "react-helmet"
import { withPrefix, Link } from "gatsby"
import Clap from "./sounds/clap.wav"
import Hihat from "./sounds/hihat.wav"
import Kick from "./sounds/kick.wav"
import Openhat from "./sounds/openhat.wav"
import Boom from "./sounds/boom.wav"
import Ride from "./sounds/ride.wav"
import Snare from "./sounds/snare.wav"
import Tom from "./sounds/tom.wav"
import Tink from "./sounds/tink.wav"
const Javascript30 = ({location }) => {
if (location.pathname === ("/Projects/DrumKit/Javascript30/")){
require("./style.css")
}
else{
console.log("failed to load css")
}
return (
<html>
<body>
<Helmet>
<script src={withPrefix('script.js')} type="text/javascript"></script>
</Helmet>
<div>
<button className="button" id="record">Record</button><br></br>
<button className="button" id="stop">Stop Recording</button><br></br>
<button className="button" id="play">Playback</button><br></br>
</div>
<div className="keys">
<div data-key="65" class="key">
<kbd>A</kbd>
<span class="sound">clap</span>
</div>
<div data-key="83" class="key">
<kbd>S</kbd>
<span class="sound">hihat</span>
</div>
<div data-key="68" class="key">
<kbd>D</kbd>
<span class="sound">kick</span>
</div>
<div data-key="70" class="key">
<kbd>F</kbd>
<span class="sound">openhat</span>
</div>
<div data-key="71" class="key">
<kbd>G</kbd>
<span class="sound">boom</span>
</div>
<div data-key="72" class="key">
<kbd>H</kbd>
<span class="sound">ride</span>
</div>
<div data-key="74" class="key">
<kbd>J</kbd>
<span class="sound">snare</span>
</div>
<div data-key="75" class="key">
<kbd>K</kbd>
<span class="sound">tom</span>
</div>
<div data-key="76" class="key">
<kbd>L</kbd>
<span class="sound">tink</span>
</div>
</div>
<audio data-key="65" src={Clap} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="83" src={Hihat} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="68" src={Kick} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="70" src={Openhat} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="71" src={Boom} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="72" src={Ride} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="74" src={Snare} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="75" src={Tom} preload="auto" crossOrigin="anonymous"></audio>
<audio data-key="76" src={Tink} preload="auto" crossOrigin="anonymous"></audio>
</body>
</html>
);
};
export default Javascript30;
关于javascript - 尝试在 Gatsby 框架中的按键事件上播放音频文件时如何修复 Promise {<pending>}？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56589601/