demo/formatting.html

<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CodeMirror: Formatting Demo</title>
    <link rel="stylesheet" href="../lib/codemirror.css">
    <script src="../lib/codemirror.js"></script>
    <script src="../lib/util/formatting.js"></script>
    <script src="../mode/css/css.js"></script>
    <script src="../mode/xml/xml.js"></script>
    <script src="../mode/javascript/javascript.js"></script>
    <script src="../mode/htmlmixed/htmlmixed.js"></script>
    <link rel="stylesheet" href="../doc/docs.css">

    <style type="text/css">
      .CodeMirror {
        border: 1px solid #eee;
      }
      td {
        padding-right: 20px;
      }
    </style>
  </head>
  <body>
    <h1>CodeMirror: Formatting demo</h1>

    <form><textarea id="code" name="code"><script> function (s,e){ for(var i=0; i < 1; i++) test("test();a=1");} </script>
<script>
function test(c){  for (var i = 0; i < 10; i++){	          process("a.b();c = null;", 300);}
}
</script>
<table><tr><td>test 1</td></tr><tr><td>test 2</td></tr></table>
<script> function test() { return 1;} </script>
<style> .test { font-size: medium; font-family: monospace; }
</style></textarea></form>

<p>Select a piece of code and click one of the links below to apply automatic formatting to the selected text or comment/uncomment the selected text. Note that the formatting behavior depends on the current block's mode.
    <table>
      <tr>
        <td>
          <a href="javascript:autoFormatSelection()">
            Autoformat Selected
          </a>
        </td>
        <td>
          <a href="javascript:commentSelection(true)">
            Comment Selected
          </a>
        </td>
        <td>
          <a href="javascript:commentSelection(false)">
            Uncomment Selected
          </a>
        </td>
      </tr>
    </table>
</p>    
    <script>
      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
        lineNumbers: true,
        mode: "htmlmixed"
      });
      CodeMirror.commands["selectAll"](editor);
      
      function getSelectedRange() {
        return { from: editor.getCursor(true), to: editor.getCursor(false) };
      }
      
      function autoFormatSelection() {
        var range = getSelectedRange();
        editor.autoFormatRange(range.from, range.to);
      }
      
      function commentSelection(isComment) {
        var range = getSelectedRange();
        editor.commentRange(isComment, range.from, range.to);
      }      
    </script>

  </body>
</html>