x
<html><body><p id="demo">This is a paragraph.</p><select onchange="myFunction(this);" size="11"> <option>xx-small</option> <option>x-small</option> <option>small</option> <option>medium</option> <option>large</option> <option>x-large</option> <option>xx-large</option> <option>100%</option> <option>250%</option> <option>2cm</option> <option>100px</option></select> <script>function myFunction(selectTag) { var listValue = selectTag.options[selectTag.selectedIndex].text; document.getElementById("demo").style.fontSize = listValue;}</script></body></html>