javascript和radiobuttonlist [英] javascript and radiobuttonlist
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问题描述
Hi huys how can i get the selected index of a radiobuttonlist or how i can check if an item in the radiobutton list is actually checked.
Thanks in advance guys.
推荐答案
您需要提供商品ID，以便选择它们，然后您可以检查选中了哪一个.单选按钮列表只是很多单选按钮，不是单个控件.
You need to give your items ids so you can select them, then you can check which one is checked. A radiobutton list is just a lot of radio buttons, it''s not a single control.
您需要访问组(名称属性)，然后查找值:
You''ll need to access the group (name attribute) and then look for the values:
<form name="frm1">
<input type="radio" name="sex" value="male" checked="checked" /> Male<br />
<input type="radio" name="sex" value="female" /> Female
</form>
// Get the HTMLCollection: getElementsByName
var sex1 = document.getElementsByName('sex');
// or like this
var sex2 = document.forms["frm1"]["sex"];
if (!sex1[0].checked && !sex1[1].checked)
{
alert('Nothing selected.');
}
据我所知，没有selectedindex，因此您将需要遍历该集合.
As far as I know there is no selectedindex, so you''ll need to loop through the collection.
您可以使用JQuery来做到这一点.以下是我尝试过的完整标记:
You can use JQuery to do this. Below is the complete markup I tried:
<script type="text/javascript" language="javascript" src="jquery-1.6.1.js"></script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script language="javascript" type="text/javascript">
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