单选按钮（INPUT type =“radio”）的OnChange事件处理程序不能作为一个值(OnChange event handler for radio button (INPUT type=“radio”) doesn't work as one value)

 我正在寻找一个通用的解决方案。 
 
 考虑2个具有相同名称的无线电类型输入。 提交时，检查的值决定了以下形式发送的值： 
 
<input type="radio" name="myRadios" onchange="handleChange1();" value="1" />
<input type="radio" name="myRadios" onchange="handleChange2();" value="2" />
 
 当单选按钮被取消选择时，更改事件不会触发。 因此，如果已经选择了值为“1”的无线电，用户选择了第二个，则handleChange1（）不会运行。 这给我一个问题（对我来说），因为没有事情可以抓住这个去选择。 
 
 我想要的是复选框组值的onchange事件的解决方法，或者检测不仅当检查无线电时，还检测无线检测时的oncheck事件。 
 
 我确信你们中有些人以前遇到这个问题。 什么是一些解决方法（或理想情况下，正确的方法来处理）？ 我只想捕捉更改事件，访问先前检查的收音机以及新检查的收音机。 
 
 PS 
 onclick似乎是一个更好的（跨浏览器）事件来指示何时检查收音机，但仍然无法解决未检查的问题。 
 
 我想这是有道理的，为什么一个复选框类型的替换在这种情况下可以工作，因为它在您检查或取消检查时更改其提交的值。 我希望单选按钮的行为更像是一个SELECT元素的onchange，但你能做什么？ 

I'm looking for a generalized solution for this.
 
Consider 2 radio type inputs with the same name. When submitted, the one that is checked determines the value that gets sent with the form:
 
<input type="radio" name="myRadios" onchange="handleChange1();" value="1" />
<input type="radio" name="myRadios" onchange="handleChange2();" value="2" />
 
The change event does not fire when a radio button is de-selected. So if the radio with value="1" is already selected and the user selects the second, handleChange1() does not run. This presents a problem (for me anyway) in that there is no event where I can can catch this de-selection.
 
What I would like is a workaround for the onchange event for the checkbox group value or alternatively an oncheck event that detects not only when a radio is checked but also when it is unchecked.
 
I'm sure some of you have run into this problem before. What are some workarounds (or ideally what is the right way to handle this)? I just want to catch the change event, access the previously checked radio as well as the newly checked radio.
 
P.S.
 onclick seems like a better (cross-browser) event to indicate when a radio is checked but it still does not solve the un-checked problem.
 
I suppose it makes sense why onchange for a checkbox type does work in a case like this since it changes the value that it submits when you check or un-check it. I wish the radio buttons behaved more like a SELECT element's onchange but what can you do...

原文：https://stackoverflow.com/questions/8838648