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- <!doctype html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>CodeMirror: Mode-Changing Demo</title>
- <link rel="stylesheet" href="../lib/codemirror.css">
- <script src="../lib/codemirror.js"></script>
- <script src="../mode/javascript/javascript.js"></script>
- <script src="../mode/scheme/scheme.js"></script>
- <link rel="stylesheet" href="../doc/docs.css">
- <style type="text/css">
- .CodeMirror {border: 1px solid black;}
- </style>
- </head>
- <body>
- <h1>CodeMirror: Mode-Changing demo</h1>
- <form><textarea id="code" name="code">
- ;; If there is Scheme code in here, the editor will be in Scheme mode.
- ;; If you put in JS instead, it'll switch to JS mode.
- (define (double x)
- (* x x))
- </textarea></form>
- <p>On changes to the content of the above editor, a (crude) script
- tries to auto-detect the language used, and switches the editor to
- either JavaScript or Scheme mode based on that.</p>
- <script>
- var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
- mode: "scheme",
- lineNumbers: true,
- tabMode: "indent"
- });
- editor.on("change", function() {
- clearTimeout(pending);
- setTimeout(update, 400);
- });
- var pending;
- function looksLikeScheme(code) {
- return !/^\s*\(\s*function\b/.test(code) && /^\s*[;\(]/.test(code);
- }
- function update() {
- editor.setOption("mode", looksLikeScheme(editor.getValue()) ? "scheme" : "javascript");
- }
- </script>
- </body>
- </html>
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