用JS,怎么得到表单中同名checkbox的总数呢?

[divineka]

document.form1.checkbox.count　行吗?

[fason]

<input type=checkbox name=fason>
<input type=checkbox name=fason>
<input type=checkbox name=fason>
<input type=checkbox name=fason>
<input type=checkbox name=fason>
count:<input type=submit onclick="alert('有'+document.getElementsByName('fason').length+'个名为fason的checkbox')">

[皓天星辰]

document.getElementsByName("checkbox").length

[jobine]

<form name="frm1" action="xxx.asp" method="post">
<input type="checkbox" name="chk1" value='香蕉' checked>香蕉
<input type="checkbox" name="chk1" value='苹果'>苹果
<input type="checkbox" name="chk1" value='荔枝' checked>荔枝
<input type="checkbox" name="chk1" value='龙眼'>龙眼
<input type="checkbox" name="chk1" value='芒果'>芒果
<script language=javascript>alert(document.frm1.chk1.length);</script>
</form>

[youbest]

<INPUT type="checkbox" name=checkbox1>
<INPUT type="checkbox" name=checkbox1>
<INPUT type="checkbox" name=checkbox1>
<SCRIPT LANGUAGE=javascript>
<!--
alert(getElementsByName('checkbox1').length)
//-->
</SCRIPT>