<html>
<head>
<script>
function get(event){
e=event.srcElement;
if(e.nodeName=="TD"){
txt="<input type='text' onblur='set(event)' size='5' value='"+e.innerHTML+"'/>";
e.innerHTML=txt;
e.firstChild.focus();
}
}
function set(event){
e=event.srcElement;
if(e.nodeName=="INPUT"){
txt=e.value;
e.parentNode.innerHTML=txt;
}
}
function add(){
var tr1=document.getElementById('itable').insertRow();
var c0=tr1.insertCell(0);
var c1=tr1.insertCell(1);
var c2=tr1.insertCell(2);
var c3=tr1.insertCell(3);
var c4=tr1.insertCell(4);
c0.innerHTML="<input type='checkbox' name='ck'/>";
c1.innerHTML=document.getElementById("name").value;
c2.innerHTML=document.getElementById("age").value;
c3.innerHTML=document.getElementById("score").value;
c4.innerHTML="<input type='button' value='删除' onclick='del(this)' />";
}
function del(r){
var i=r.parentNode.parentNode.rowIndex;
document.getElementById('itable').deleteRow(i);
}
function seleteReserve(){
var ch=document.getElementsByName('ck');
for(i=ch.length-1;i>=0;i--){
if(ch[i].checked==true){
ch[i].checked=false;
}else{
ch[i].checked=true;
}
}
}
function deleteAll(){
var flag=0;
var tb=document.getElementById('itable');
var ch=document.getElementsByName('ck');
for(i=ch.length-1;i>=0;i--){
var tr=ch[i].parentNode.parentNode;
var index=tr.rowIndex;
if(ch[i].checked==true){
tb.deleteRow(index);
flag=flag+1;
}
}
if(flag<=0){
alert("请选定要删除的行！");
}
}
function selectAll(){
var ch=document.getElementsByName('ck');
for(i=ch.length-1;i>=0;i--){
ch[i].checked=true;
}
}
</script>
</head>
<body>
name:<input type="text" id="name" size='5'/>
age:<input type="text" id="age" size='5' />
score:<input type="text" id="score" size='5'/>
<input type="button" value="insert" onclick="add();" />
<table id="itable" border="1" ondblclick="get(event);" >
<tr>
<th>选择</th>
<th>姓名</th>
<th>年龄</th>
<th>成绩</th>
<th>删除</th>
</tr>
</table>
<input type="button" value="select all" onclick="selectAll();" />
<input type="button" value="delete all" onclick="deleteAll();" />
<input type="button" value="select reserve" onclick="seleteReserve();" />
</body>
</html>