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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>音乐盒</title>
<link rel="stylesheet" href="css/main.css">
</head>
<body>
<div class="bg"></div>
<div class="help">
<span class="icon"></span>
<div class="popop">
<div class="box">
<div class="close">×</div>
<h2>乐谱编写说明</h2>
<ul class="content">
<li>1. 低音由低到高分别依次对应小写字母（c,d,e,f,g,a,b）</li>
<li>2. 中音由低到高分别依次对应数字（1,2,3,4,5,6,7）</li>
<li>3. 高音由低到高分别依次对应大写字母（C,D,E,F,G,A,B）</li>
<li>4. <span>空格</span>代表四分音符时值，<span>符号"-"</span>代表八分音符时值，<span>符号"="</span>代表十六分音符时值</li>
<li>5. 音符紧挨一起则代表同时发声，可用于编写和弦</li>
</ul>
</div>
</div>
</div>
<h2 class="title">音乐盒</h2>
<div class="music-box"></div>
<div class="chord"></div>
<div class="form">
<div class="form-grp align-top">
<label>类型：</label>
<div class="type-list">
<label class="type sine"><input name="type" type="radio" value="sine" />sine</label>
<label class="type square"><input name="type" type="radio" value="square" />square</label>
<label class="type triangle"><input name="type" type="radio" value="triangle" checked />triangle</label>
<label class="type sawtooth"><input name="type" type="radio" value="sawtooth" />sawtooth</label>
</div>
</div>
<div class="form-grp align-top">
<label for="music-text">乐谱：</label>
<textarea id="music-text" placeholder="输入乐谱后按回车键即可播放音乐哦~"></textarea>
</div>
<div class="form-grp align-top">
<label>曲目：</label>
<div class="music-name"></div>
</div>
<div class="form-grp">
<label>速度：</label>
<input id="speed" type="range" min="60" max="120" step="5" value="60">
<span id="speed-value">60</span>
<span class="unit">bpm</span>
</div>
</div>
<script src="scripts/main.js"></script>
</body>
</html>