我尝试使用Vexflow和Raphael.js使用 SVG 绘制五线谱，当我加载页面时，SVG 元素出现在 DOM 中，但它们没有出现在屏幕上。
我检查了是否有任何可以隐藏元素的 CSS 规则，但没有任何.. 还检查了不同的浏览器，不同的 lib 版本，什么都没有......
这是出现在 DOM 中的 SVG：
<html lang="en"><head>
<meta charset="utf-8">
<title>Fermata</title>
<!-- Raphael.js -->
<script src="../deps/raphael/raphael-min.js"></script>
<!-- VexFlow Uncompiled Sources -->
<script src="../deps/vexflow/src/header.js"></script>
<script src="../deps/vexflow/src/vex.js"></script>
<script src="../deps/vexflow/src/flow.js"></script>
<script src="../deps/vexflow/src/fraction.js"></script>
<script src="../deps/vexflow/src/fonts/vexflow_font.js"></script>
<script src="../deps/vexflow/src/glyph.js"></script>
<script src="../deps/vexflow/src/tables.js"></script>
<script src="../deps/vexflow/src/stave.js"></script>
<script src="../deps/vexflow/src/staveconnector.js"></script>
<script src="../deps/vexflow/src/tabstave.js"></script>
<script src="../deps/vexflow/src/voice.js"></script>
<script src="../deps/vexflow/src/voicegroup.js"></script>
<script src="../deps/vexflow/src/modifier.js"></script>
<script src="../deps/vexflow/src/modifiercontext.js"></script>
<script src="../deps/vexflow/src/accidental.js"></script>
<script src="../deps/vexflow/src/dot.js"></script>
<script src="../deps/vexflow/src/tickcontext.js"></script>
<script src="../deps/vexflow/src/tickable.js"></script>
<script src="../deps/vexflow/src/note.js"></script>
<script src="../deps/vexflow/src/bend.js"></script>
<script src="../deps/vexflow/src/stavenote.js"></script>
<script src="../deps/vexflow/src/tabnote.js"></script>
<script src="../deps/vexflow/src/barnote.js"></script>
<script src="../deps/vexflow/src/ghostnote.js"></script>
<script src="../deps/vexflow/src/formatter.js"></script>
<script src="../deps/vexflow/src/stavetie.js"></script>
<script src="../deps/vexflow/src/stavehairpin.js"></script>
<script src="../deps/vexflow/src/tabtie.js"></script>
<script src="../deps/vexflow/src/tabslide.js"></script>
<script src="../deps/vexflow/src/beam.js"></script>
<script src="../deps/vexflow/src/vibrato.js"></script>
<script src="../deps/vexflow/src/annotation.js"></script>
<script src="../deps/vexflow/src/tuning.js"></script>
<script src="../deps/vexflow/src/stavemodifier.js"></script>
<script src="../deps/vexflow/src/keysignature.js"></script>
<script src="../deps/vexflow/src/timesignature.js"></script>
<script src="../deps/vexflow/src/clef.js"></script>
<script src="../deps/vexflow/src/music.js"></script>
<script src="../deps/vexflow/src/keymanager.js"></script>
<script src="../deps/vexflow/src/renderer.js"></script>
<script src="../deps/vexflow/src/stavebarline.js"></script>
<script src="../deps/vexflow/src/stavevolta.js"></script>
<script src="../deps/vexflow/src/staverepetition.js"></script>
<script src="../deps/vexflow/src/stavesection.js"></script>
<script src="../deps/vexflow/src/stavetempo.js"></script>
<script src="../deps/vexflow/src/articulation.js"></script>
<script src="../deps/vexflow/src/tremolo.js"></script>
<script src="../deps/vexflow/src/raphaelcontext.js"></script>
<script src="../deps/vexflow/src/tuplet.js"></script>
<script src="../deps/vexflow/src/boundingbox.js"></script>
<script src="../deps/vexflow/src/textnote.js"></script>
<script src="../deps/vexflow/src/strokes.js"></script>
<script src="../deps/vexflow/src/stringnumber.js"></script>
<script src="../deps/vexflow/src/frethandfinger.js"></script>
<!-- Fermat srcs -->
<script src="../src/Fermata.js"></script>
<script src="../src/Fermata.Utils.js"></script>
<script src="../src/Fermata.Data.js"></script>
<script src="../src/Fermata.Mapping.Clef.js"></script>
<script src="../src/Fermata.Mapping.Direction.js"></script>
<script src="../src/Fermata.Mapping.Connector.js"></script>
<script src="../src/Fermata.Mapping.Barline.js"></script>
<script src="../src/Fermata.Render.js"></script>
<script src="../src/Fermata.Render.Call.js"></script>
<script src="../src/Fermata.Render.SymbolSize.js"></script>
<script src="../src/Fermata.Render.NoteStorage.js"></script>
<script src="../src/Fermata.Render.NoteType.js"></script>
<script src="../src/Fermata.Render.SoundType.js"></script>
<script src="../src/Fermata.Render.PitchPitched.js"></script>
<script src="../src/Fermata.Render.PitchRest.js"></script>
<script src="../src/Fermata.Render.PitchUnpitched.js"></script>
<script src="../src/Fermata.Render.NoteConverter.js"></script>
<script src="../src/Fermata.Render.TieRenderer.js"></script>
<script src="../src/Fermata.Render.GraceNote.js"></script>
<script src="../src/Fermata.Render.CueNote.js"></script>
<script src="../src/Fermata.Render.NormalNote.js"></script>
<script src="../src/Fermata.Render.Note.js"></script>
<script src="../src/Fermata.Render.RenderAttribute.js"></script>
<script src="../src/Fermata.Render.Direction.js"></script>
<script src="../src/Fermata.Render.Barline.js"></script>
<script src="../src/Fermata.Render.Backup.js"></script>
<script src="../src/Fermata.Render.PartList.js"></script>
<script src="../src/Fermata.Render.Header.js"></script>
<script src="../src/Fermata.Render.Score.js"></script>
<script src="../src/Fermata.Drawer.js"></script>
<script src="../src/Fermata.Drawer.Score.js"></script>
</head>
<body>
<div class="container-score">
<canvas id="canvas-score" width="1700px" height="250">
<svg style="overflow: hidden; position: relative;" height="150" version="1.1" width="1700" xmlns="http://www.w3.org/2000/svg">
<desc style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);">Created with Raphaël 2.1.0</desc>
<defs style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);"></defs>
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</svg>
</canvas>
</div>
<script>
// Hello World
var score = {"score-partwise":{"$version":"3.0","part-list":{"score-part":[{"$id":"P1","part-name":"Music"}]},"part":[{"$id":"P1","measure":[{"$number":"1","attributes":[{"divisions":"1","key":{"fifths":"0"},"time":{"beats":"4","beat-type":"4"},"clef":{"sign":"G","line":"2"}}],"note":[{"pitch":{"step":"C","octave":"4"},"duration":"4","type":"whole"}]}]}]}};
var data = new Fermata.Data(score);
var render = new Fermata.Render(data);
render.renderAll();
var drawer = new Fermata.Drawer(data, document.getElementById('canvas-score'));
drawer.drawAll();
</script><i title="Raphaël Colour Picker" style="display: none; color: black;"></i>
</body>
</html>
并且没有链接到页面的 CSS。