Javascript 输入字段禁用，直到选中单选按钮（HTML）
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input field disabled until radio button is checked (HTML)
提问by Alex C.
I have two fields, one of them is a text input field and the other is a select tag. The thing is I want one of them to be enabled only and the user should choose which one is enabled by clicking on one of the radio buttons above.
我有两个字段，其中一个是文本输入字段，另一个是选择标签。问题是我只想启用其中一个，用户应该通过单击上面的单选按钮之一来选择启用哪一个。
So if the user chooses the first radio button the input field will be enabled and if he choose the second one the select tag will be enabled.
因此，如果用户选择第一个单选按钮，则将启用输入字段，如果他选择第二个单选按钮，则将启用选择标签。
Here's my code:
这是我的代码：
<input type="radio" name="type" value="customurl">wanna custom url?
<input type="text" name="custom" placeholder="should be 5 charecters at least" >
<br><br>
<input type="radio" name="type" value="customurl">random?
<select name="charstype">
<option>Letters</option>
<option>Number</option>
</select>
回答by Wilq
You will need to use javascript. The shortest way in code you gave would be to attach an ID attribute both to select and input field, and disable/enable them by "onclick" event.
您将需要使用 javascript。您提供的代码中最短的方法是将 ID 属性附加到选择和输入字段，并通过“onclick”事件禁用/启用它们。
<input onclick="document.getElementById('custom').disabled = false; document.getElementById('charstype').disabled = true;" type="radio" name="type" checked="checked">wanna custom url?
<input type="text" name="custom" id="custom" placeholder="should be 5 charecters at least" >
<br><br>
<input onclick="document.getElementById('custom').disabled = true; document.getElementById('charstype').disabled = false;" type="radio" name="type" value="customurl">random?
<select name="charstype" id="charstype" disabled="disabled">
<option>Letters</option>
<option>Number</option>
</select>回答by Nelson
I modified your code to do what you want, here it is:
我修改了你的代码来做你想做的，这里是：
<input type="radio" name="type" value="customurl"
onclick="document.getElementById('text').removeAttribute('disabled')">wanna custom url?
<input type="text" id="text" name="custom"
placeholder="should be 5 charecters at least" disabled>
<br><br>
<input type="radio" name="type" value="customurl"
onclick="document.getElementById('sel').removeAttribute('disabled')">random?
<select id="sel" name="charstype" disabled>
<option>Letters</option>
<option>Number</option>
</select>???????????
you can see it working here
你可以看到它在这里工作
