W3School TIY
编辑您的代码：
<html> <head> <script type="text/javascript"> function showTabIndex() { var b1=document.getElementById('b1').tabIndex; var b2=document.getElementById('b2').tabIndex; var b3=document.getElementById('b3').tabIndex; document.write("Tab index of Button 1: " + b1); document.write("<br />"); document.write("Tab index of Button 2: " + b2); document.write("<br />"); document.write("Tab index of Button 3: " + b3); } </script> </head> <body> <button id="b1" tabIndex="1">Button 1</button><br /> <button id="b2" tabIndex="2">Button 2</button><br /> <button id="b3" tabIndex="3">Button 3</button><br /> <br /> <input type="button" onclick="showTabIndex()" value="Show tabIndex" /> </body> </html>
查看结果: