时间: 2021-07-31 作者:daque
<html><script language="jscript">function numbercells() {var count=0;for (i=0; i < document.all.mytable.rows.length; i++){for (j=0; j < document.all.mytable.rows(i).cells.length; j++) {document.all.mytable.rows(i).cells(j).innertext = count;count++;}}}function tb_addnew(){var ls_t=document.all("mytable")maxcell=ls_t.rows(0).cells.length;mynewrow = ls_t.insertrow();for(i=0;i<maxcell;i++){mynewcell=mynewrow.insertcell();mynewcell.innertext="a"+i;}}function tb_delete(){var ls_t=document.all("mytable");ls_t.deleterow() ;}</script><body onload="numbercells()"><table id=mytable border=1><tr><th> </th><th> </th><th> </th><th> </th></tr><tr><td> </td><td> </td><td> </td><td> </td></tr><tr><td> </td><td> </td><td> </td><td> </td></tr></table><input type=button value="新增" onclick="tb_addnew()"><input type=button value="简略" onclick="tb_delete()" ></body></html>