复选框(checkbook)的全选和复选功能演示
[/color][color=red][size=xx-small][/size]<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
<script language="javascript">
function allcheck(){
var check=document.getElementsByName("checkbox");
for(var i=0;i<check.length;i++){
check[i].checked=true;
}
}
function notallcheck(){
var check=document.getElementsByName("checkbox");
for(var i=0;i<check.length;i++){
check[i].checked=!check[i].checked;
}
}
function show(){
var s=""
var check=document.getElementsByName("checkbox");
for(var i=0;i<check.length;i++){
if(check[i].checked){
s+=check[i].value;
}
}
if(s.length==0){
alert("没有选择！");
}else{
alert(s);
}
}
</script>
</head>
<body>
<table width="300" border="1">
<tr>
<td height="61">你的爱好：</td>
</tr>
<tr>
<td height="75"><input name="checkbox" type="checkbox" value="爬山" checked>
爬山
<input type="checkbox" name="checkbox" value="游泳">
游泳
<input type="checkbox" name="checkbox" value=" 打球 ">
打球
<input type="checkbox" name="checkbox" value="看电视">
看电视</td>
</tr>
<tr>
<td height="52"><input type="button" name="Submit" value="全选" onClick="allcheck()">
<input type="submit" name="Submit2" value="反选" onClick="notallcheck()">
<input type="submit" name="Submit3" value="确定" onClick="show()"></td>
</tr>
</table>
</body>
</html>
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
<script language="javascript">
function allcheck(){
var check=document.getElementsByName("checkbox");
for(var i=0;i<check.length;i++){
check[i].checked=true;
}
}
function notallcheck(){
var check=document.getElementsByName("checkbox");
for(var i=0;i<check.length;i++){
check[i].checked=!check[i].checked;
}
}
function show(){
var s=""
var check=document.getElementsByName("checkbox");
for(var i=0;i<check.length;i++){
if(check[i].checked){
s+=check[i].value;
}
}
if(s.length==0){
alert("没有选择！");
}else{
alert(s);
}
}
</script>
</head>
<body>
<table width="300" border="1">
<tr>
<td height="61">你的爱好：</td>
</tr>
<tr>
<td height="75"><input name="checkbox" type="checkbox" value="爬山" checked>
爬山
<input type="checkbox" name="checkbox" value="游泳">
游泳
<input type="checkbox" name="checkbox" value=" 打球 ">
打球
<input type="checkbox" name="checkbox" value="看电视">
看电视</td>
</tr>
<tr>
<td height="52"><input type="button" name="Submit" value="全选" onClick="allcheck()">
<input type="submit" name="Submit2" value="反选" onClick="notallcheck()">
<input type="submit" name="Submit3" value="确定" onClick="show()"></td>
</tr>
</table>
</body>
</html>