Reactjs音频按钮？

席安康

2023-03-14

问题内容：

在HTML中，我通过此代码创建一个音频按钮

<html><head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
        <script type="text/javascript" src="http://netdna.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
        <link href="http://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet" type="text/css">
        <link href="http://pingendo.github.io/pingendo-bootstrap/themes/default/bootstrap.css" rel="stylesheet" type="text/css">
    </head><body>
        <script>
        function aud_play_pause() {
            var myAudio = document.getElementById("myTune");
            if (myAudio.paused) {
                myAudio.play();
            } else {
                myAudio.pause();
            }
        }
        </script>
        <audio id="myTune">
            <source src="./audio/rain.mp3">
        </audio>
        <div class="col-md-2">
            <div class="row">
              <div class="col-md-12">
                   <a class="btn btn-block btn-lg btn-primary" data-toggle="button" onclick = "aud_play_pause()">Rain</a>
             </div>
            </div>
        </div>
</body>

它可以正常工作，但是在reactjs中，我在下面使用三个文件，并且该文件与html具有相同的路径，但是代码无法正常工作，因此我得到了一个空白网站。对不起，我的英语不好。index.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
    <script type="text/javascript" src="http://netdna.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
    <link href="http://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet" type="text/css">
    <link href="http://pingendo.github.io/pingendo-bootstrap/themes/default/bootstrap.css" rel="stylesheet" type="text/css">
  </head>
  <body>
    <div id="root"></div>
  </body>
</html>

Test.js

var React = require('react');

var Test = React.createClass( {  
        aud_play_pause() {
            var myAudio = document.getElementById("myTune");
            if (myAudio.paused) {
                myAudio.play();
            } else {
                myAudio.pause();
            }
        },
        render () {
            return(
               <div>
                    <audio id="myTune">
                        <source src="./audio/rain.mp3" />
                    </audio>
                    <div className="col-md-2">
                        <div className="row">
                            <div className="col-md-12">
                                <a className="btn btn-block btn-lg btn-primary" data-toggle="button" onClick = {this.aud_play_pause()}>Rain</a>
                            </div>
                        </div>
                    </div>
               </div>
            );
        }
});
export default Test;

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import Test from './Test';

ReactDOM.render(
  <Test />,
  document.getElementById('root')
);

问题答案：

onClick在反应期望功能。但是，当您这样做时onClick = {this.aud_play_pause()}，它会返回一个值。将onClick定义更改为

onClick = {this.aud_play_pause}

码：

var React = require('react');

var Test = React.createClass( {  
        aud_play_pause() {
            var myAudio = this.mytune;
            if (myAudio.paused) {
                myAudio.play();
            } else {
                myAudio.pause();
            }
        },
        render () {
            return(
               <div>
                    <audio id="myTune" ref = {(ip)=> {this.mytune = ip}}>
                        <source src={require("./audio/rain.mp3")}/>
                    </audio>
                    <div className="col-md-2">
                        <div className="row">
                            <div className="col-md-12">
                                <a className="btn btn-block btn-lg btn-primary" data-toggle="button" onClick = {this.aud_play_pause}>Rain</a>
                            </div>
                        </div>
                    </div>
               </div>
            );
        }
});
export default Test;

例如，您还需要一个捆绑器webpack来翻译您的代码。

请参阅此处的设置示例：

另外，如果您使用的最新版本React，则会收到警告，提示afte v15.5.0
React.createClass将被弃用，因此最好从以下位置开始React.Component

import React from 'react';

class Test extends React.Component{

        aud_play_pause() {
            var myAudio = this.myTune;
            if (myAudio.paused) {
                myAudio.play();
            } else {
                myAudio.pause();
            }
        }
        render () {
            return(
               <div>
                    <audio id="myTune" ref={(ip) => {this.mytune = ip}}>
                        <source src={require("./audio/rain.mp3")} />
                    </audio>
                    <div className="col-md-2">
                        <div className="row">
                            <div className="col-md-12">
                                <a className="btn btn-block btn-lg btn-primary" data-toggle="button" onClick = {this.aud_play_pause}>Rain</a>
                            </div>
                        </div>
                    </div>
               </div>
            );
        }
}
export default Test;

Reactjs音频按钮？

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