blocks|key|1375822|text|只有在有其他选项时，单选按钮才需要是只读的。如果您没有任何其他选项，则无法取消选中的单选按钮。如果您有其他选项，您可以通过禁用其他选项来阻止用户更改该值：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1375823|<input+type="radio"+name="foo"+value="Y"+checked>
<input+type="radio"+name="foo"+value="N"+disabled>|code-block|syntax|javascript|1375824|小提琴：http://jsfiddle.net/qqVGu/|offset|length|1375825|entityMap|0|LINK|mutability|MUTABLE|url|http://jsfiddle.net/qqVGu/^0|0|0|4|Q|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

<p>Radio buttons would only need to be read-only if there are other options. If you don't have any other options, a checked radio button cannot be unchecked. If you have other options, you can prevent the user from changing the value merely by disabling the other options:</p>

<pre><code>&lt;input type="radio" name="foo" value="Y" checked&gt;
&lt;input type="radio" name="foo" value="N" disabled&gt;
</code></pre>

<p>Fiddle: <a href="http://jsfiddle.net/qqVGu/" rel="noreferrer">http://jsfiddle.net/qqVGu/</a></p>


blocks|key|1375843|text|这是你可以使用的技巧。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1375844|<input+type="radio"+name="name"+onclick="this.checked+=+false;"+/>|code-block|syntax|javascript|1375845|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>This is the trick you can go with.</p>

<pre><code>&lt;input type="radio" name="name" onclick="this.checked = false;" /&gt;
</code></pre>


blocks|key|1375876|text|尝试属性disabled，但我认为您不会获得单选按钮的值。或者设置图像，如：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1375877|<img+src="itischecked.gif"+alt="[x]"+/>radio+button+option|code-block|syntax|javascript|1375878|诚挚的问候。|1375879|entityMap^0|4|8|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

<p>Try the attribute <code>disabled</code>, but I think the you won't get the value of the radio buttons.
Or set images instead like:</p>

<pre><code>&lt;img src="itischecked.gif" alt="[x]" /&gt;radio button option
</code></pre>

<p>Best Regards.</p>


blocks|key|1375919|text|在JS中捕获"On_click()“事件并像这样检查它怎么样？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1375920|http://www.dynamicdrive.com/forums/showthread.php?t=33043|offset|length|1375921|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1L|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

<p>What about capturing an "On_click()" event in JS and checking it like here?:</p>

<p><a href="http://www.dynamicdrive.com/forums/showthread.php?t=33043" rel="nofollow noreferrer">http://www.dynamicdrive.com/forums/showthread.php?t=33043</a></p>


blocks|key|1375968|text|一个相当简单的选项是创建一个javascript函数，调用表单的"onsubmit“事件来启用单选按钮back，这样它的值就会与表单的其余部分一起发布。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1375969|这似乎不是HTML规范上的遗漏，而是一种设计选择(一个合乎逻辑的选择，IMHO)，单选按钮不能像按钮那样只读，如果你不想使用它，那就禁用它。|1375970|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

<p>A fairly simple option would be to create a javascript function called on the form's "onsubmit" event to enable the radiobutton back so that it's value is posted with the rest of the form. <br />
It does not seem to be an omission on HTML specs, but a design choice (a logical one, IMHO), a radiobutton can't be readonly as a button can't be, if you don't want to use it, then disable it.</p>


blocks|key|1160777|text|我通过仅禁用未选中的单选按钮来伪造单选按钮上的只读。它可以防止用户选择不同的值，并且选中的值将始终在提交时发布。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1160778|使用jQuery使其成为只读：|1160779|$(':radio:not(:checked)').attr('disabled',+true);|code-block|syntax|javascript|1160780|这种方法也适用于将选择列表设为只读，只是您需要禁用每个未选中的选项。|1160781|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>I've faked readonly on a radio button by disabling only the un-checked radio buttons. It keeps the user from selecting a different value, and the checked value will always post on submit.</p>

<p>Using jQuery to make readonly:</p>

<pre><code>$(':radio:not(:checked)').attr('disabled', true);
</code></pre>

<p>This approach also worked for making a select list readonly, except that you'll need to disable each un-selected option.</p>


blocks|key|1160826|text|最好的解决方案是设置选中或未选中状态(从客户端或服务器)，并且不让用户在wards之后更改它(即，将其设置为只读)执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1160827|<input+type="radio"+name="name"+onclick="javascript:+return+false;"+/>|code-block|syntax|javascript|1160828|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>The best solution is to set the checked or unchecked state (either from client or server) and to not let the user change it after wards (i.e make it readonly) do the following:</p>

<pre><code>&lt;input type="radio" name="name" onclick="javascript: return false;" /&gt;
</code></pre>


blocks|key|1376101|text|我想出了一个重javascript的方法来实现复选框和单选按钮的只读状态。它在当前版本的火狐、Opera、Safari、Google+Chrome以及IE的当前和以前版本(下至IE7)上进行了测试。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1376102|为什么不直接使用您要求的disabled属性呢？打印页面时，禁用的输入元素显示为灰色。为其实现此功能的客户希望所有元素都具有相同的颜色。|1376103|我不确定我是否被允许在这里发布源代码，因为这是我在一家公司工作时开发的，但我肯定可以分享其中的概念。|1376104|使用onmousedown事件，您可以在单击操作更改选择状态之前读取它。因此，您可以存储此信息，然后使用onclick事件恢复这些状态。|1376105|<input+id="r1"+type="radio"+name="group1"+value="r1"+onmousedown="storeSelectedRadiosForThisGroup(this.name);"+onclick="setSelectedStateForEachElementOfThisGroup(this.name);"+checked="checked">Option+1</input>
<input+id="r2"+type="radio"+name="group1"+value="r2"+onmousedown="storeSelectedRadiosForThisGroup(this.name);"+onclick="setSelectedStateForEachElementOfThisGroup(this.name);">Option+2</input>
<input+id="r3"+type="radio"+name="group1"+value="r3"+onmousedown="storeSelectedRadiosForThisGroup(this.name);"+onclick="setSelectedStateForEachElementOfThisGroup(this.name);">Option+3</input>

<input+id="c1"+type="checkbox"+name="group2"+value="c1"+onmousedown="storeSelectedRadiosForThisGroup(this.name);"+onclick="setSelectedStateForEachElementOfThisGroup(this.name);"+checked="checked">Option+1</input>
<input+id="c2"+type="checkbox"+name="group2"+value="c2"+onmousedown="storeSelectedRadiosForThisGroup(this.name);"+onclick="setSelectedStateForEachElementOfThisGroup(this.name);">Option+2</input>
<input+id="c3"+type="checkbox"+name="group2"+value="c3"+onmousedown="storeSelectedRadiosForThisGroup(this.name);"+onclick="setSelectedStateForEachElementOfThisGroup(this.name);"+checked="checked">Option+3</input>|code-block|syntax|javascript|1376106|这段代码的javascript部分将像这样工作(同样只是概念)：|1376107|var+selectionStore+=+new+Object();++//+keep+the+currently+selected+items'+ids+in+a+store

function+storeSelectedRadiosForThisGroup(elementName)+{
++++//+get+all+the+elements+for+this+group
++++var+radioOrSelectGroup+=+document.getElementsByName(elementName);

++++//+iterate+over+the+group+to+find+the+selected+values+and+store+the+selected+ids+in+the+selectionStore
++++//+((radioOrSelectGroup[i].checked+==+true)+tells+you+that)
++++//+remember+checkbox+groups+can+have+multiple+checked+items,+so+you+you+might+need+an+array+for+the+ids
++++...
}

function+setSelectedStateForEachElementOfThisGroup(elementName)+{
++++//+iterate+over+the+group+and+set+the+elements+checked+property+to+true/false,+depending+on+whether+their+id+is+in+the+selectionStore
++++...

++++//+make+sure+you+return+false+here
++++return+false;
}|1376108|您现在可以通过更改输入元素的onclick和onmousedown属性来启用/禁用单选按钮/复选框。|1376109|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|Y|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

<p>I've come up with a javascript-heavy way to achieve a readonly state for check boxes and radio buttons. It is tested against current versions of Firefox, Opera, Safari, Google Chrome, as well as current and previous versions of IE (down to IE7). </p>

<p>Why not simply use the disabled property you ask? When printing the page, disabled input elements come out in a gray color. The customer for which this was implemented wanted all elements to come out the same color.</p>

<p>I'm not sure if I'm allowed to post the source code here, as I developed this while working for a company, but I can surely share the concepts.</p>

<p>With onmousedown events, you can read the selection state before the click action changes it. So you store this information and then restore these states with an onclick event.</p>

<pre><code>&lt;input id="r1" type="radio" name="group1" value="r1" onmousedown="storeSelectedRadiosForThisGroup(this.name);" onclick="setSelectedStateForEachElementOfThisGroup(this.name);" checked="checked"&gt;Option 1&lt;/input&gt;
&lt;input id="r2" type="radio" name="group1" value="r2" onmousedown="storeSelectedRadiosForThisGroup(this.name);" onclick="setSelectedStateForEachElementOfThisGroup(this.name);"&gt;Option 2&lt;/input&gt;
&lt;input id="r3" type="radio" name="group1" value="r3" onmousedown="storeSelectedRadiosForThisGroup(this.name);" onclick="setSelectedStateForEachElementOfThisGroup(this.name);"&gt;Option 3&lt;/input&gt;

&lt;input id="c1" type="checkbox" name="group2" value="c1" onmousedown="storeSelectedRadiosForThisGroup(this.name);" onclick="setSelectedStateForEachElementOfThisGroup(this.name);" checked="checked"&gt;Option 1&lt;/input&gt;
&lt;input id="c2" type="checkbox" name="group2" value="c2" onmousedown="storeSelectedRadiosForThisGroup(this.name);" onclick="setSelectedStateForEachElementOfThisGroup(this.name);"&gt;Option 2&lt;/input&gt;
&lt;input id="c3" type="checkbox" name="group2" value="c3" onmousedown="storeSelectedRadiosForThisGroup(this.name);" onclick="setSelectedStateForEachElementOfThisGroup(this.name);" checked="checked"&gt;Option 3&lt;/input&gt;
</code></pre>

<p>The javascript portion of this would then work like this (again only the concepts):</p>

<pre><code>var selectionStore = new Object();  // keep the currently selected items' ids in a store

function storeSelectedRadiosForThisGroup(elementName) {
    // get all the elements for this group
    var radioOrSelectGroup = document.getElementsByName(elementName);

    // iterate over the group to find the selected values and store the selected ids in the selectionStore
    // ((radioOrSelectGroup[i].checked == true) tells you that)
    // remember checkbox groups can have multiple checked items, so you you might need an array for the ids
    ...
}

function setSelectedStateForEachElementOfThisGroup(elementName) {
    // iterate over the group and set the elements checked property to true/false, depending on whether their id is in the selectionStore
    ...

    // make sure you return false here
    return false;
}
</code></pre>

<p>You can now enable/disable the radio buttons/checkboxes by changing the onclick and onmousedown properties of the input elements.</p>


blocks|key|1160937|text|我有一个很长的表单(250%2B字段)来发布到一个数据库。这是一个在线招聘申请。当管理员查看已提交的申请时，表单将填充来自数据库的数据。输入文本和文本区域将替换为它们提交的文本，但单选按钮和复选框在保留为表单元素时很有用。禁用它们会使它们更难阅读。将.checked属性设置为false+onclick将不起作用，因为它们可能已经被填写应用程序的用户选中。不管怎样..。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1160938|onclick="return+false;"|code-block|syntax|javascript|1160939|它就像是“禁用”无线电和复选框的护身符。|1160940|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<p>I have a lengthy form (250+ fields) that posts to a db.  It is an online employment application.  When an admin goes to look at an application that has been filed, the form is populated with data from the db.  Input texts and textareas are replaced with the text they submitted but the radios and checkboxes are useful to keep as form elements.  Disabling them makes them harder to read.  Setting the .checked property to false onclick won't work because they may have been checked by the user filling out the app.  Anyhow...</p>

<pre><code>onclick="return false;"
</code></pre>

<p>works like a charm for 'disabling' radios and checkboxes ipso facto.</p>


blocks|key|1376268|text|对于未选中的单选按钮，将其标记为禁用。这会阻止它们响应用户输入并清除选中的单选按钮。例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1376269|<input+type="radio"+name="var"+checked="yes"+value="Yes"></input>
<input+type="radio"+name="var"+disabled="yes"+value="No"></input>|code-block|syntax|javascript|1376270|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>For the non-selected radio buttons, flag them as disabled. This prevents them from responding to user input and clearing out the checked radio button. For example:</p>

<pre><code>&lt;input type="radio" name="var" checked="yes" value="Yes"&gt;&lt;/input&gt;
&lt;input type="radio" name="var" disabled="yes" value="No"&gt;&lt;/input&gt;
</code></pre>


blocks|key|1376309|text|我使用了一个JS+plugin，它设置了复选框/单选输入元素的样式，并使用下面的jQuery建立了一个“只读状态”，在这种状态下，基础值仍然发布，但用户似乎无法访问输入元素，这就是我们使用readonly+input属性的目的……|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1376310|if+($(node).prop('readonly'))+{
++++$(node).parent('div').addClass('disabled');+//+just+styling,+appears+greyed+out
++++$(node).on('click',+function+(e)+{
++++++++e.preventDefault();
++++});
}|code-block|syntax|javascript|1376311|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/fronteed/icheck/tree/2.x^0|9|6|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

<p>I'm using a JS <a href="https://github.com/fronteed/icheck/tree/2.x" rel="nofollow noreferrer">plugin</a> that styles checkbox/radio input elements and used the following jQuery to establish a 'readonly state' where the underlying value is still posted but the input element appears inaccessible to the user, which is I believe the intended reason we would use a readonly input attribute...</p>

<pre><code>if ($(node).prop('readonly')) {
    $(node).parent('div').addClass('disabled'); // just styling, appears greyed out
    $(node).on('click', function (e) {
        e.preventDefault();
    });
}
</code></pre>


blocks|key|1161083|text|以下是我对Sencha+ExtJS+7.2%2B的解决方案(覆盖)(复选框和单选按钮在单个覆盖中)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1161084|Ext.define('MyApp.override.field.Checkbox',+{
++++override:+'Ext.field.Checkbox',

++++/**
+++++*+OVERRIDE:+to+allow+updateReadOnly+to+work+propperly
+++++*+@param+{boolean}+newValue
+++++*
+++++*+To+ensure+the+disabled+state+stays+active+if+the+field+is+still+readOnly
+++++*+we+re+-+set+the+disabled+state
+++++*/
++++updateDisabled(newValue)+{
++++++++this.callParent(arguments);

++++++++if+(!newValue+&&+this.getReadOnly())+{
++++++++++++this.inputElement.dom.disabled+=+true;
++++++++}
++++},

++++/**
+++++*+OVERRIDE:+readonly+for+radiogroups+and+checkboxgroup+do+not+work+as+other+fields
+++++*+++++https://stackoverflow.com/questions/1953017/why-cant-radio-buttons-be-readonly
+++++*
+++++*+@param+{boolean}+newValue
+++++*
+++++*++-+use+disabled+on+the+field
+++++*/
++++updateReadOnly(value)+{
++++++++this.callParent(arguments);

++++++++if+(!this.getDisabled())+{
++++++++++++this.inputElement.dom.disabled+=+value;
++++++++}
++++}
});|code-block|syntax|javascript|1161085|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Here is my solution (override) for Sencha ExtJS 7.2+ (checkbox and radio in a single override)</p>
<pre><code>
Ext.define('MyApp.override.field.Checkbox', {
    override: 'Ext.field.Checkbox',

    /**
     * OVERRIDE: to allow updateReadOnly to work propperly
     * @param {boolean} newValue
     *
     * To ensure the disabled state stays active if the field is still readOnly
     * we re - set the disabled state
     */
    updateDisabled(newValue) {
        this.callParent(arguments);

        if (!newValue &amp;&amp; this.getReadOnly()) {
            this.inputElement.dom.disabled = true;
        }
    },

    /**
     * OVERRIDE: readonly for radiogroups and checkboxgroup do not work as other fields
     *     https://stackoverflow.com/questions/1953017/why-cant-radio-buttons-be-readonly
     *
     * @param {boolean} newValue
     *
     *  - use disabled on the field
     */
    updateReadOnly(value) {
        this.callParent(arguments);

        if (!this.getDisabled()) {
            this.inputElement.dom.disabled = value;
        }
    }
});
</code></pre>


blocks|key|1161146|text|Disabled适用于单个单选按钮(而不是整个集合)。如果您使用的是PHP，并且在将页面加载到浏览器之前已在服务器上了解您的情况，则可以使用这个非常简单的解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1161147|<php+$chcky=+(condition)+?+'checked'+:+'disabled';?>
<php+$chckn=+(condition)+?+'checked'+:+'disabled';?>
<input+type="radio"+name="var"+value="Yes"+<?php+echo+$chcky?>></input>
<input+type="radio"+name="var"+value="No"+<?php+echo+$chckn?>></input>|code-block|syntax|javascript|1161148|我在响应表单提交的页面上使用它。|1161149|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<p>Disabled works on individual radio buttons (not the whole set).
If you are using PHP and your circumstances are known on the server before loading the page in the browser you can use this very simple solution.</p>
<pre><code>&lt;php $chcky= (condition) ? 'checked' : 'disabled';?&gt;
&lt;php $chckn= (condition) ? 'checked' : 'disabled';?&gt;
&lt;input type=&quot;radio&quot; name=&quot;var&quot; value=&quot;Yes&quot; &lt;?php echo $chcky?&gt;&gt;&lt;/input&gt;
&lt;input type=&quot;radio&quot; name=&quot;var&quot; value=&quot;No&quot; &lt;?php echo $chckn?&gt;&gt;&lt;/input&gt;
</code></pre>
<p>I use it on the page responding a form submission.</p>


<p>I would like to show a radio button, have its value submitted, but depending on the circumstances, have it not editable. Disabled doesn't work, because it doesn't submit the value (or does it?), and it grays out the radio button. Read-only is really what I'm looking for, but for some mysterious reason it doesn't work.</p>

<p>Is there some weird trick I need to pull to get read-only to work as expected? Should I just do it in JavaScript instead?</p>

<p>Incidentally, does anyone know why read-only doesn't work in radio buttons, while it does work in other input tags? Is this one of those incomprehensible omissions in the HTML specs?</p>


Why can't radio buttons be "readonly"?

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我想显示一个单选按钮，提交它的值，但根据情况，它是不可编辑的。Disabled不起作用，因为它不提交值(或者是吗？)，并且使单选按钮变灰。只读确实是我想要的，但由于某种神秘的原因，它不能工作。是不是有什么奇怪的把戏需要我拉出来才能像预期的那样只读？我是不是应该用JavaScript来做呢？顺便说一句，有没有人知道为什么...

问为什么单选按钮不能是“只读”的？
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