W3School TIY Editor
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<!DOCTYPE html> <html> <head> <style> table { width: 100%; } table, th, td { border: 1px solid black; } </style> </head> <body> <p>单击该按钮返回 id 为“myTd”的 td 的 headers 属性值。</p> <table> <tr> <th id="name">姓名</th> <th id="email">电邮</th> <th id="phone">电话</th> <th id="address">地址</th> </tr> <tr> <td id="myTd" headers="name">Bill Gates</td> <td headers="email">someone@example.com</td> <td headers="phone">(800) 426-9400</td> <td headers="address">1 Microsoft Way Redmond, WA 98052 USA</td> </tr> </table> <br> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myTd").headers; document.getElementById("demo").innerHTML = x; } </script> </body> </html>