通过JavaScript检查单选按钮组的值？ [英] Checking Value of Radio Button Group via JavaScript?

问题描述

这可能看起来愚蠢而愚蠢，但我似乎无法弄清楚如何通过JavaScript检查HTML表单中单选按钮组的值。我有以下代码：

 < input type =radioid =gendermname =gendervalue = 男/> 
< label for =genderm>男性< / label> 
< input type =radioid =genderfname =gendervalue =female/> 
< label for =genderf>女性< / label> 
  

如何检索性别如果您使用的是jQuery这样的JavaScript库，那很简单： / p>

  alert（$（'input [name = gender]：checked'）。val（））; 
  

此代码将选中已检查的输入性别名称，并获取它的值。简单不是吗？

现场演示

This may seem silly and downright stupid but I can't seem to figure out how to check the value of a radio button group in my HTML form via JavaScript. I have the following code:

<input type="radio" id="genderm" name="gender" value="male" />
<label for="genderm">Male</label>
<input type="radio" id="genderf" name="gender" value="female" />
<label for="genderf">Female</label>

How do I retrieve the value of gender via JavaScript?

解决方案

If you are using a javascript library like jQuery, it's very easy:

alert($('input[name=gender]:checked').val());

This code will select the checked input with gender name, and gets it's value. Simple isn't it?

Live demo

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