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1 <!doctype html>
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2
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3 <title>CodeMirror: HTML5 preview</title>
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4 <meta charset="utf-8"/>
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5 <link rel=stylesheet href="../doc/docs.css">
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6
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7 <link rel=stylesheet href=../lib/codemirror.css>
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8 <script src=../lib/codemirror.js></script>
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9 <script src=../mode/xml/xml.js></script>
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10 <script src=../mode/javascript/javascript.js></script>
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11 <script src=../mode/css/css.js></script>
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12 <script src=../mode/htmlmixed/htmlmixed.js></script>
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13 <style type=text/css>
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14 .CodeMirror {
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15 float: left;
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16 width: 50%;
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17 border: 1px solid black;
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18 }
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19 iframe {
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20 width: 49%;
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21 float: left;
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22 height: 300px;
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23 border: 1px solid black;
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24 border-left: 0px;
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25 }
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26 </style>
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27 <div id=nav>
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28 <a href="https://codemirror.net/5"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
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29
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30 <ul>
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31 <li><a href="../index.html">Home</a>
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32 <li><a href="../doc/manual.html">Manual</a>
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33 <li><a href="https://github.com/codemirror/codemirror5">Code</a>
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34 </ul>
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35 <ul>
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36 <li><a class=active href="#">HTML5 preview</a>
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37 </ul>
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38 </div>
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39
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40 <article>
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41 <h2>HTML5 preview</h2>
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42
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43 <textarea id=code name=code>
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44 <!doctype html>
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45 <html>
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46 <head>
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47 <meta charset=utf-8>
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48 <title>HTML5 canvas demo</title>
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49 <style>p {font-family: monospace;}</style>
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50 </head>
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51 <body>
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52 <p>Canvas pane goes here:</p>
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53 <canvas id=pane width=300 height=200></canvas>
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54 <script>
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55 var canvas = document.getElementById('pane');
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56 var context = canvas.getContext('2d');
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57
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58 context.fillStyle = 'rgb(250,0,0)';
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59 context.fillRect(10, 10, 55, 50);
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60
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61 context.fillStyle = 'rgba(0, 0, 250, 0.5)';
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62 context.fillRect(30, 30, 55, 50);
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63 </script>
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64 </body>
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65 </html></textarea>
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66 <iframe id=preview></iframe>
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67 <script>
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68 var delay;
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69 // Initialize CodeMirror editor with a nice html5 canvas demo.
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70 var editor = CodeMirror.fromTextArea(document.getElementById('code'), {
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71 mode: 'text/html'
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72 });
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73 editor.on("change", function() {
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74 clearTimeout(delay);
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75 delay = setTimeout(updatePreview, 300);
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76 });
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77
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78 function updatePreview() {
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79 var previewFrame = document.getElementById('preview');
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80 var preview = previewFrame.contentDocument || previewFrame.contentWindow.document;
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81 preview.open();
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82 preview.write(editor.getValue());
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83 preview.close();
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84 }
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85 setTimeout(updatePreview, 300);
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86 </script>
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87 </article>
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