Use js to delete tbody code_javascript skills

<title>runcode</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <meta name="Author" content="Sheneyan"> <style type="text/css"> </style> <table id="tt"> <tbody> <tr> <td>123</td> <td>123</td> <td>123</td> <td>123</td> </tr> <tr> <td>123</td> <td>123</td> <td>123</td> <td>123</td> </tr> <tr> <td>123</td> <td>123</td> <td>123</td> <td>123</td> </tr> </tbody> <tbody> <tr> <td>abc</td> <td>abc</td> <td>abc</td> <td>abc</td> </tr> <tr> <td>abc</td> <td>abc</td> <td>abc</td> <td>abc</td> </tr> <tr> <td>abc</td> <td>abc</td> <td>abc</td> <td>abc</td> </tr> </tbody> </table> <button onclick="delTbody('tt',0)"> </button>Delete the first tbody of the table (this table only has two tbodies, so this button can only be pressed twice...)