childNodes 用法两例

第一：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> New Document </TITLE> <META NAME="Generator" CONTENT="EditPlus"> <META NAME="Author" CONTENT=""> <META NAME="Keywords" CONTENT=""> <META NAME="Description" CONTENT=""> <SCRIPT LANGUAGE="JavaScript"> <!-- var row = -1; function showEdit(obj){ var cell2 = obj.parentNode.parentNode.childNodes[1]; var rowIndex = obj.parentNode.parentNode.rowIndex; cell2.innerHTML = "<input type='text' value='"+ cell2.innerHTML +"'>"; if(row != -1){ var oldCell2 = document.getElementById("tb").rows[row].cells[1]; oldCell2.innerHTML = oldCell2.childNodes[0].value; } row = rowIndex; } //--> </SCRIPT> </HEAD> <BODY> <TABLE id="tb"> <TR> <TD><input type="radio" onclick="showEdit(this)" name="rad"></TD> <TD></TD> <TD></TD> </TR> <TR> <TD><input type="radio" onclick="showEdit(this)" name="rad"></TD> <TD></TD> <TD></TD> </TR> <TR> <TD><input type="radio" onclick="showEdit(this)" name="rad"></TD> <TD></TD> <TD></TD> </TR> </TABLE> </BODY> </HTML>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]
第二：
<table border=1 width=100%> <tr> <td><input name=m type=checkbox onclick="mm(this)"></td> <td>1111</td> <td><input name=aaa value="222" disabled></td> <td><input name=bbb value="333" disabled></td> </tr> <tr> <td><input name=m type=checkbox onclick="mm(this)"></td> <td>1111</td> <td><input name=aaa value="222" disabled></td> <td><input name=bbb value="333" disabled></td> </tr> <tr> <td><input name=m type=checkbox onclick="mm(this)"></td> <td>1111</td> <td><input name=aaa value="222" disabled></td> <td><input name=bbb value="333" disabled></td> </tr> </table> <SCRIPT LANGUAGE="JavaScript"> function mm(e) { var currentTr=e.parentElement.parentElement; var inputObjs=currentTr.getElementsByTagName("input"); for(var i=0;i<inputObjs.length;i++) { if(inputObjs[i]==e) continue; inputObjs[i].disabled=!e.checked; } } </SCRIPT>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]