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24.10
author Coffee CMS <info@coffee-cms.ru>
date Fri, 11 Oct 2024 22:40:23 +0000
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-1:000000000000 0:78edf6b517a0
1 <!doctype html>
2
3 <title>CodeMirror: Mode-Changing Demo</title>
4 <meta charset="utf-8"/>
5 <link rel=stylesheet href="../doc/docs.css">
6
7 <link rel="stylesheet" href="../lib/codemirror.css">
8 <script src="../lib/codemirror.js"></script>
9 <script src="../mode/javascript/javascript.js"></script>
10 <script src="../mode/scheme/scheme.js"></script>
11 <style>
12 .CodeMirror {border: 1px solid black;}
13 </style>
14 <div id=nav>
15 <a href="https://codemirror.net/5"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
16
17 <ul>
18 <li><a href="../index.html">Home</a>
19 <li><a href="../doc/manual.html">Manual</a>
20 <li><a href="https://github.com/codemirror/codemirror5">Code</a>
21 </ul>
22 <ul>
23 <li><a class=active href="#">Mode-Changing</a>
24 </ul>
25 </div>
26
27 <article>
28 <h2>Mode-Changing Demo</h2>
29 <form><textarea id="code" name="code">
30 ;; If there is Scheme code in here, the editor will be in Scheme mode.
31 ;; If you put in JS instead, it'll switch to JS mode.
32
33 (define (double x)
34 (* x x))
35 </textarea></form>
36
37 <p>On changes to the content of the above editor, a (crude) script
38 tries to auto-detect the language used, and switches the editor to
39 either JavaScript or Scheme mode based on that.</p>
40
41 <script>
42 var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
43 mode: "scheme",
44 lineNumbers: true
45 });
46 var pending;
47 editor.on("change", function() {
48 clearTimeout(pending);
49 pending = setTimeout(update, 400);
50 });
51 function looksLikeScheme(code) {
52 return !/^\s*\(\s*function\b/.test(code) && /^\s*[;\(]/.test(code);
53 }
54 function update() {
55 editor.setOption("mode", looksLikeScheme(editor.getValue()) ? "scheme" : "javascript");
56 }
57 </script>
58 </article>