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<!doctype html>
<title>CodeMirror: Lazy Mode Loading Demo</title><meta charset="utf-8"/><link rel=stylesheet href="../doc/docs.css">
<link rel="stylesheet" href="../lib/codemirror.css"><script src="../lib/codemirror.js"></script><script src="../addon/mode/loadmode.js"></script><script src="../mode/meta.js"></script><style> .CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;} </style><div id=nav> <a href="https://codemirror.net/5"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
<ul> <li><a href="../index.html">Home</a> <li><a href="../doc/manual.html">Manual</a> <li><a href="https://github.com/codemirror/codemirror5">Code</a> </ul> <ul> <li><a class=active href="#">Lazy Mode Loading</a> </ul></div>
<article><h2>Lazy Mode Loading Demo</h2><p style="color: gray">Current mode: <span id="modeinfo">text/plain</span></p><form><textarea id="code" name="code">This is the editor.// It starts out in plain text mode,# use the control below to load and apply a mode "you'll see the highlighting of" this text /*change*/.</textarea></form><p>Filename, mime, or mode name: <input type=text value=foo.js id=mode> <button type=button onclick="change()">change mode</button></p>
<script>CodeMirror.modeURL = "../mode/%N/%N.js";var editor = CodeMirror.fromTextArea(document.getElementById("code"), { lineNumbers: true});var modeInput = document.getElementById("mode");CodeMirror.on(modeInput, "keypress", function(e) { if (e.keyCode == 13) change();});function change() { var val = modeInput.value, m, mode, spec; if (m = /.+\.([^.]+)$/.exec(val)) { var info = CodeMirror.findModeByExtension(m[1]); if (info) { mode = info.mode; spec = info.mime; } } else if (/\//.test(val)) { var info = CodeMirror.findModeByMIME(val); if (info) { mode = info.mode; spec = val; } } else { mode = spec = val; } if (mode) { editor.setOption("mode", spec); CodeMirror.autoLoadMode(editor, mode); document.getElementById("modeinfo").textContent = spec; } else { alert("Could not find a mode corresponding to " + val); }}</script> </article>
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