mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-11-23 08:38:42 +00:00
59 lines
1.7 KiB
HTML
59 lines
1.7 KiB
HTML
<!doctype html>
|
|
|
|
<title>CodeMirror: Mode-Changing 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="../mode/javascript/javascript.js"></script>
|
|
<script src="../mode/scheme/scheme.js"></script>
|
|
<style type="text/css">
|
|
.CodeMirror {border: 1px solid black;}
|
|
</style>
|
|
<div id=nav>
|
|
<a href="http://codemirror.net"><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/marijnh/codemirror">Code</a>
|
|
</ul>
|
|
<ul>
|
|
<li><a class=active href="#">Mode-Changing</a>
|
|
</ul>
|
|
</div>
|
|
|
|
<article>
|
|
<h2>Mode-Changing Demo</h2>
|
|
<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
|
|
});
|
|
var pending;
|
|
editor.on("change", function() {
|
|
clearTimeout(pending);
|
|
pending = setTimeout(update, 400);
|
|
});
|
|
function looksLikeScheme(code) {
|
|
return !/^\s*\(\s*function\b/.test(code) && /^\s*[;\(]/.test(code);
|
|
}
|
|
function update() {
|
|
editor.setOption("mode", looksLikeScheme(editor.getValue()) ? "scheme" : "javascript");
|
|
}
|
|
</script>
|
|
</article>
|