javascript - 获取选中复选框的值？(Get the value of checked checkbox?)

Question

So I've got code that looks like this:(所以我有代码看起来像这样：)

<input class="messageCheckbox" type="checkbox" value="3" name="mailId[]">
<input class="messageCheckbox" type="checkbox" value="1" name="mailId[]">

I just need Javascript to get the value of whatever checkbox is currently checked.(我只需要Javascript来获取当前检查的任何复选框的值。)

EDIT : To add, there will only be ONE checked box.(编辑 ：要添加，只有一个复选框。)

  ask by Mandatory Programmer translate from so

Answer 1

None of the above worked for me but simply use this:(以上都没有为我工作，只是使用这个：)

document.querySelector('.messageCheckbox').checked;

Happy coding.(快乐的编码。)