在javascript中使复选框可单击一次？

Question

对不起，我是 javascript 的绝对菜鸟。

我已经为一个简单的测验制作了一个表格，但不知道如何让收音机只点击一次。

我可以选择两个或三个按钮作为我的答案。我想改变这个。

<form name = "Beginners Quiz">

<p>Film speed refers to:</p>
<p><input type="radio" name="Answer 1" id="Answer1" value = "a" onclick =  "recordAnswer(1,this.value"/>How long it takes to develop film. <br/>
<p><input type="radio" name="Answer 2" id="Answer2" value = "b" onclick = "recordAnswer(1,this.value"/>How fast film moves through film-transport system.  <br/>
<p><input type="radio" name="Answer 3" id="Answer3" value = "c" onclick = "recordAnswer(1,this.value"/> How sensitive the film is to light.  <br/>
<p><input type="radio" name="Answer 4" id="Answer4" value = "d" onclick = "recordAnswer(1,this.value"/> None of these makes sense. <br/>

我一直在关注 w3shcools 教程，但无济于事。有人能解释一下吗？

Answer 1

它们都应该具有相同的name 属性

Answer 2

您想作为一个组的所有单选按钮的名称必须相同。

Answer 3

试试这个

<p>Film speed refers to:</p>
<p><input type="radio" name="Answer" id="Answer1" value = "a" onclick =  "recordAnswer(1,this.value"/>How long it takes to develop film. <br/>
<p><input type="radio" name="Answer" id="Answer2" value = "b" onclick = "recordAnswer(1,this.value"/>How fast film moves through film-transport system.  <br/>
<p><input type="radio" name="Answer" id="Answer3" value = "c" onclick = "recordAnswer(1,this.value"/> How sensitive the film is to light.  <br/>
<p><input type="radio" name="Answer" id="Answer4" value = "d" onclick = "recordAnswer(1,this.value"/> None of these makes sense. <br/>

Answer 4

这是一种方法... 编辑 不需要 Javascript，因为我使用收音机已经有一段时间了。

在正文中，你有这个：

<form name="beginners_quiz">
<fieldset id="radios"><legend id="quiz">Film speed refers to:</legend>
<input type="radio" name="answer" id="Answer1" value="a" onclick="recordAnswer(1,this.value);" />How long it takes to develop film.<br/>
<input type="radio" name="answer" id="Answer2" value="b" onclick="recordAnswer(1,this.value);" />How fast film moves through film-transport system.<br/>
<input type="radio" name="answer" id="Answer3" value="c" onclick="recordAnswer(1,this.value);" />How sensitive the film is to light.<br/>
<input type="radio" name="answer" id="Answer4" value="d" onclick="recordAnswer(1,this.value);" />None of these makes sense.<br/>
</fieldset>
</form>

应该这样做。