51help TIY
码：
<html> <head> <script type="text/javascript"> function adjustFontSize() { document.getElementById("p1").style.fontSizeAdjust="0.70"; } </script> </head> <body> <p id="p1">This is an example paragraph</p> <input type="button" onclick="adjustFontSize()" value="Adjust font-size" /> </body> </html>
查看结果: