Change string to subscript and superscript with form control

   
<html>
<head>
  <script type="text/javascript">
    function showWindow() {
      var txt = document.form1.stringField.value;

      if (document.form1.subBox.checked) txt = txt.sub();
      if (document.form1.supBox.checked) txt = txt.sup();

      objWindow = window.open("", "","width=600,height=300");
      objWindow.document.write(txt);
      objWindow.document.close();
  }
  </script>
</head>
<body>
  <form method="post" name="form1" action="null">
      String:<input type="text" size="40" maxlength="256" name="stringField" />
      Style:
      <input type="checkbox" name="subBox" value="ON" />Sub
      <input type="checkbox" name="supBox" value="ON" />Sup
    <input type="button" name="Show" value="Show" onclick="showWindow()" />
  </form>
</body>
</html>

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Change string to subscript and superscript with form control : Form Demo « Form Control « JavaScript DHTML

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