<form name=form1>
<input type=checkbox name=wz1><br>
<input type=checkbox name=wz2><br>
<input type=checkbox name=wz3><br>
<input type=checkbox name=wz4><br>
<input type=checkbox name=wz5><br>
<input type=button value="Select All" onclick="selectAll()">
</form><script language=javascript>
function selectAll()
{
var a = document.form1.elements;
for (var i=0; i<a.length; i++)
{
if(a[i].name && a[i].type=="checkbox" && a[i].name.substr(0, 2)=="wz")
a[i].checked = true;
}
}
</script>
<input type=checkbox name=wz1><br>
<input type=checkbox name=wz2><br>
<input type=checkbox name=wz3><br>
<input type=checkbox name=wz4><br>
<input type=checkbox name=wz5><br>
<input type=button value="Select All" onclick="selectAll()">
</form><script language=javascript>
function selectAll()
{
var a = document.form1.elements;
for (var i=0; i<a.length; i++)
{
if(a[i].name && a[i].type=="checkbox" && a[i].name.substr(0, 2)=="wz")
a[i].checked = true;
}
}
</script>
obj = document.yourform.elements("wz" + i)
obj.checked = true //or false
}可以查阅 msdn.microsoft.com 搜寻相关语法。我都是现用现查,所以上面可能有错误。