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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>for...in loop</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
//<![CDATA[

function doFor() {

  var MyText = {
     one : "one",
     two : "two",
     three : "three"
  };

  for (var prop in MyText) {
    document.writeln(prop + "<br />");
  }
      
}
//]]>
</script>
</head>
<body onload="doFor()">
<p>Some page content</p>
</body>
</html>