Javascript FCC鼓机-通过测试,但按键事件未为我触发
关于鼓机挑战: 我从FCC那里得到了cdn脚本,上面说所有的测试都通过了,但是当我试着按按键运行调用音频剪辑的函数时,什么都没有发生——我是不是遗漏了什么 关键组件Javascript FCC鼓机-通过测试,但按键事件未为我触发,javascript,reactjs,Javascript,Reactjs,关于鼓机挑战: 我从FCC那里得到了cdn脚本,上面说所有的测试都通过了,但是当我试着按按键运行调用音频剪辑的函数时,什么都没有发生——我是不是遗漏了什么 关键组件 import React from "react"; import { data } from "./sounds"; export default function Key(props) { const soundId = props.soundId; const play = () => { docu
import React from "react";
import { data } from "./sounds";
export default function Key(props) {
const soundId = props.soundId;
const play = () => {
document.getElementById(props.id).play();
console.log(`'Clicked:' ${props.id}`);
};
const displayData = props.displayData;
const handleClick = () => {
play();
displayData(props.id);
};
return (
<div className="buttonContainer" >
<button id="button" className="drum-pad" onClick={handleClick} onKeyDown={handleClick}>
<audio
src={data[soundId].url}
type="audio/mp3"
className="clip"
id={props.id}
/>
{props.id.toUpperCase()}
</button>
</div>
);
}
从“React”导入React;
从“/sounds”导入{data};
导出默认功能键(道具){
const soundId=props.soundId;
常量播放=()=>{
document.getElementById(props.id.play();
log(`Clicked:'${props.id}`);
};
const displayData=props.displayData;
常量handleClick=()=>{
play();
显示数据(道具id);
};
返回(
您需要告诉浏览器在页面呈现后使用componentDidMount()监听onKeydown事件
或者将按钮事件更改为onKeydown()
event,小写d
import React, { useState } from "react";
import Key from "./Key";
import "./styles.css";
export default function App() {
const [displayData, setDisplayData] = useState();
const handleDisplay = input => {
setDisplayData(input);
setTimeout(() => {
setDisplayData();
}, 500);
};
return (
<div className="App">
<div id="drum-machine">
<p id="display">{displayData}</p>
<Key id={"Q"} soundId={0} charCode={81} displayData={handleDisplay} />
<Key id={"W"} soundId={1} charCode={87} displayData={handleDisplay} />
<Key id={"E"} soundId={2} charCode={69} displayData={handleDisplay} />
<Key id={"A"} soundId={3} charCode={65} displayData={handleDisplay} />
<Key id={"S"} soundId={4} charCode={83} displayData={handleDisplay} />
<Key id={"D"} soundId={5} charCode={68} displayData={handleDisplay} />
<Key id={"Z"} soundId={6} charCode={90} displayData={handleDisplay} />
<Key id={"X"} soundId={7} charCode={88} displayData={handleDisplay} />
<Key id={"C"} soundId={8} charCode={87} displayData={handleDisplay} />
</div>
</div>
);
}
componentDidMount() {
document.addEventListener("onKeydown", this.handleKeyPress);
}
componentWillUnmount() {
document.removeEventListener("onKeydown", this.handleKeyPress);
}