javascript用DOM兑现 复选框的全选、反选、全不选
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script>
function qx(){
for(var i=0;i<=1;i++){
var ck=document.getElementsByName("ck");
ck[i].checked=true;
}
}
function qbx(){
for(var i=0;i<=1;i++){
var ck=document.getElementsByName("ck");
ck[i].checked=false;
}
}
function fx(){
for(var i=0;i<=1;i++){
var ck=document.getElementsByName("ck");
if(ck[i].checked==false)
{ck[i].checked=true;}
else{ck[i].checked=false}
}
}
</script>
</head>
<body>
<input type="checkbox" name="ck" />苹果<br />
<input type="checkbox" name="ck" />香蕉<br />
<input type="button" value="全选" onclick="qx()"/>
<input type="button" value="反选" onclick="fx()"/>
<input type="button" value="全不选" onclick="qbx()"/>
</body>
</html>