如何检测用户已取消选中复选框？ [英] How to detect that a user has unchecked a checkbox?

问题描述

以下表单：

    <form action="x.php" method="get" id="myForm">Subscribe:
<div id="radioButtonsWithAdds">
    <input type="radio" name="group1" value="one">One month 2,99$  
    <input type="radio" name="group1" value="two"> Two months   5,98$</div><br>
    <input type="checkbox" name="option1" value="withAdds" checked>  with adds
    <img src="next.png" border="0" alt="enviar" onclick="document.getElementById('myForm').submit();"> 
    </form>

是订阅的第一部分。在这里，用户可以在一个月或两个月之间选择订阅。

Is the first part of a subscription from. In here, the user may choose between one month or two months subscription.

如果用户同意接收添加，则选中复选框，这将是所有，他/她可以点击下一个按钮，这是确定。

If the user agrees to receive adds, leaves the checkbox checked, that will be all, he/she can hit the next button and it's ok.

但如果用户取消选中添加复选框，则div将显示在#radioButtonsWithAdds的位置，其中包含另一组具有不同价格的单选按钮。

But if the user unchecks the "with adds" checkbox, a div will show in the place of the #radioButtonsWithAdds one containing another set of radio buttons with different prices.

如何检测复选框ish而不触及任何提交按钮？

How can I detect that the checkbox ish without hitting any submit button?

推荐答案

$('#yourcheckbox').change(function() {

   if ( ! this.checked) {
       // It is not checked, show your div...

   }

});

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