js 如何增加列
HTML code<html> <head> </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> <tr> <td> Row3 cell1 </td> <td> Row3 cell2 </td> </tr> </table> <script>function insRow(){var x=document.getElementById('myTable').insertRow(0)var y=x.insertCell(0)var z=x.insertCell(1)y.innerHTML="NEW CELL1"z.innerHTML="NEW CELL2" } </script> <input type="button" value="InsertRow" onclick="insRow()";> </body></html>
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这是增加一行的代码，如何增加一列呢？谢谢！

------解决方案--------------------
function insCell(){
var x=document.getElementById('myTable').rows[0];
var y=x.insertCell(0)
y.innerHTML="NEW CELL1"
}
在第一行插入一列，要每行插循环一下
------解决方案--------------------
L@_@K
HTML code<html> <head> </head> <body> <table id="myTable" border=1> <tr> <td> Row 0, cell 0 </td> <td> Row 0, cell 1 </td> </tr> <tr> <td> Row 1, cell 0 </td> <td> Row 1, cell 1 </td> </tr> <tr> <td> Row 2, cell 0 </td> <td> Row 2, cell 1 </td> </tr> </table> <script>function insRow(iIndex){ var t = document.getElementById('myTable'); var columnCount = t.rows[0].cells.length; var r = t.insertRow(iIndex); var c; for (var i=0; i<columnCount; i++) { c = r.insertCell(i); c.innerText = "Row " + iIndex + ", cell " + i; }}function appCol(){ var t=document.getElementById('myTable'); var r, c; for (var i=0; i<t.rows.length; i++) { r = t.rows[i]; c = r.insertCell(); c.innerText = "Row " + i + ", cell " + (r.cells.length-1); }} </script> <input type="button" value="InsertRow" onclick="insRow(0)";> <input type="button" value="AppendColumn" onclick="appCol()";> </body></html>