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源代码：
点击运行
<!DOCTYPE html> <html> <head> <script> function createCaption() { var x=document.getElementById('myTable').createCaption(); x.innerHTML="My table caption"; } </script> </head> <body> <table id="myTable" border="1"> <tr> <td>Row1 cell1</td> <td>Row1 cell2</td> </tr> <tr> <td>Row2 cell1</td> <td>Row2 cell2</td> </tr> </table> <br> <input type="button" onclick="createCaption()" value="Create caption"> </body> </html>
运行结果
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