jQuery 获取自定义属性的值

Get value of custom attribute

提问by Meek

I have two radio buttons. I would like to be able to get the value of the custom attribute "xmlvalue" of the checked radio button.

我有两个单选按钮。我希望能够获得选中单选按钮的自定义属性“xmlvalue”的值。

I have tried with the following script:

我曾尝试使用以下脚本：

var userType = $("input[name=ctrl_CustomerType]:checked", this).attr('xmlvalue');

Markup:

标记：

<input type="radio" name="ctrl_CustomerType" id="ctrl_CustomerType_1" xmltag="CustomerType" xmlvalue="existingCustomer" checked="checked"> Yes
<br />
<input type="radio" name="ctrl_CustomerType" id="ctrl_CustomerType_2" xmltag="CustomerType" xmlvalue="newCustomer"> No

Fiddle here

在这里摆弄

-- But I keep getting "Undefined".

- 但我一直收到“未定义”。

Any ideas?

有任何想法吗？

回答by A. Wolff

Remove the context of your selector:

删除选择器的上下文：

http://jsfiddle.net/NrQek/1/

http://jsfiddle.net/NrQek/1/

 var userType = $("input[name=ctrl_CustomerType]:checked").attr('xmlvalue');
        alert("xmlvalue is: " + userType);

回答by Arun P Johny

Your selector is wrong.

你的选择器是错误的。

The input element is not children of aelement where you are clicking, so you cannot pass thisas a context to the selector

输入元素不是a您单击的元素的子元素，因此您无法将其this作为上下文传递给选择器

var userType = $("input[name=ctrl_CustomerType]:checked").attr('xmlvalue');

Demo: Fiddle

演示：小提琴