blocks|key|1500548|text|请考虑以下几点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1500549|​|1500550|$(function()+{
++$('#dialog').dialog({
++++title:+"Image",
++++modal:+true,
++++width:+'auto',
++++close:+function()+{
++++++$(this).dialog('destroy').remove();
++++}
++});
});|code-block|syntax|javascript|1500551|body+>+div.ui-widget-overlay+{
++opacity:+0.5;
}|1500552|<link+rel="stylesheet"+href="//code.jquery.com/ui/1.13.1/themes/base/jquery-ui.css">
<script+src="https://code.jquery.com/jquery-3.6.0.js">
</script>
<script+src="https://code.jquery.com/ui/1.13.1/jquery-ui.js"></script>
<div+id="dialog"+title="Image">
++<p>This+is+the+default+dialog+which+is+useful+for+displaying+information.+The+dialog+window+can+be+moved,+resized+and+closed+with+the+&apos;x&apos;+icon.</p>
</div>|1500553|1500554|当您检查覆盖层时，不透明度将按预期设置。|1500555|来自主题化部分：|offset|length|1500556|此外，当设置modal选项时，ui-widget-overlay类名的元素将追加到<body>中。|blockquote|style|CODE|1500557|更新|BOLD|1500558|您的OP没有澄清您有多个对话框，您希望为这个对话框修改覆盖。没有什么好办法来集中精力于这一要素。最好的方法是在Open中添加一个类到元素中，并在关闭期间删除这个类。或者，如果不能使用CSS，则将其分配给适当的选择器。|1500559|1500560|$(function()+{
++$('#dialog').dialog({
++++title:+"Image",
++++modal:+true,
++++width:+'auto',
++++open:+function()+{
++++++$("body+div.ui-widget-overlay").css("opacity",+0.5);
++++},
++++close:+function()+{
++++++$("body+div.ui-widget-overlay").css("opacity",+0.3);
++++++$(this).dialog('destroy').remove();
++++}
++});
});|1500561|<link+rel="stylesheet"+href="//code.jquery.com/ui/1.13.1/themes/base/jquery-ui.css">
<script+src="https://code.jquery.com/jquery-3.6.0.js">
</script>
<script+src="https://code.jquery.com/ui/1.13.1/jquery-ui.js"></script>
<div+id="dialog"+title="Image">
++<p>This+is+the+default+dialog+which+is+useful+for+displaying+information.+The+dialog+window+can+be+moved,+resized+and+closed+with+the+&apos;x&apos;+icon.</p>
</div>|1500562|1500563|这样，当您打开一个特定的对话框，覆盖有一个不同的不透明度。其他的就不会生效了。|1500564|entityMap|0|LINK|mutability|MUTABLE|url|https://api.jqueryui.com/dialog/^0|0|0|0|0|0|0|0|2|3|0|0|6|5|F|H|15|6|0|0|2|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1K|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1L|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|F|7|1M|8|@]|9|@]|A|$G|H]]|$1|K|3|L|5|F|7|1N|8|@]|9|@]|A|$G|H]]|$1|M|3|C|5|6|7|1O|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1P|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1Q|8|@]|9|@$R|1R|S|1S|1|1T]]|A|$]]|$1|T|3|U|5|V|7|1U|8|@$R|1V|S|1W|W|X]|$R|1X|S|1Y|W|X]|$R|1Z|S|20|W|X]]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|21|8|@$R|22|S|23|W|10]]|9|@]|A|$]]|$1|11|3|12|5|6|7|24|8|@]|9|@]|A|$]]|$1|13|3|C|5|6|7|25|8|@]|9|@]|A|$]]|$1|14|3|15|5|F|7|26|8|@]|9|@]|A|$G|H]]|$1|16|3|17|5|F|7|27|8|@]|9|@]|A|$G|H]]|$1|18|3|C|5|6|7|28|8|@]|9|@]|A|$]]|$1|19|3|1A|5|6|7|29|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|2A|8|@]|9|@]|A|$]]]|1C|$1D|$5|1E|1F|1G|A|$1H|1I]]]]

<p>Consider the following.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>$(function() {
  $('#dialog').dialog({
    title: "Image",
    modal: true,
    width: 'auto',
    close: function() {
      $(this).dialog('destroy').remove();
    }
  });
});</code></pre>
<pre class="snippet-code-css lang-css prettyprint-override"><code>body &gt; div.ui-widget-overlay {
  opacity: 0.5;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link rel="stylesheet" href="//code.jquery.com/ui/1.13.1/themes/base/jquery-ui.css"&gt;
&lt;script src="https://code.jquery.com/jquery-3.6.0.js"&gt;
&lt;/script&gt;
&lt;script src="https://code.jquery.com/ui/1.13.1/jquery-ui.js"&gt;&lt;/script&gt;
&lt;div id="dialog" title="Image"&gt;
  &lt;p&gt;This is the default dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the &amp;apos;x&amp;apos; icon.&lt;/p&gt;
&lt;/div&gt;</code></pre>
</div>
</div>
</p>
<p>When you inspect the overlay, the opacity is set as expected.</p>
<p>From the <a href="https://api.jqueryui.com/dialog/" rel="nofollow noreferrer">Theming</a> section:</p>
<blockquote>
<p>Additionally, when the <code>modal</code> option is set, an element with a <code>ui-widget-overlay</code> class name is appended to the <code>&lt;body&gt;</code>.</p>
</blockquote>
<p><strong>Update</strong></p>
<p>Your OP did not clarify you had multiple dialogs and you wanted to modify the overlay for just this one. There is no good way to focus on that element. What might be best is upon Open, to add a Class to the element and remove the Class during Close. Or, if you can't use CSS, assign it to the proper selector.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>$(function() {
  $('#dialog').dialog({
    title: "Image",
    modal: true,
    width: 'auto',
    open: function() {
      $("body div.ui-widget-overlay").css("opacity", 0.5);
    },
    close: function() {
      $("body div.ui-widget-overlay").css("opacity", 0.3);
      $(this).dialog('destroy').remove();
    }
  });
});</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link rel="stylesheet" href="//code.jquery.com/ui/1.13.1/themes/base/jquery-ui.css"&gt;
&lt;script src="https://code.jquery.com/jquery-3.6.0.js"&gt;
&lt;/script&gt;
&lt;script src="https://code.jquery.com/ui/1.13.1/jquery-ui.js"&gt;&lt;/script&gt;
&lt;div id="dialog" title="Image"&gt;
  &lt;p&gt;This is the default dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the &amp;apos;x&amp;apos; icon.&lt;/p&gt;
&lt;/div&gt;</code></pre>
</div>
</div>
</p>
<p>In this way, when you open one specific dialog, the Overlay has a different opacity. The others will not be effected.</p>


<p>I firstly tried to change the <em><code>opacity</code></em> on my dialog function like that :</p>
<pre><code>open: function(event, ui) {
  $('.ui-widget-overlay').css({ opacity: '.5' });
},
</code></pre>
<p>But it didn't work, I tried to override the <em><code>opacity</code></em> again by trying to modify the css function like this:</p>
<pre><code>$(&quot;.ui-widget-overlay&quot;).css(&quot;cssText&quot;, &quot;height: 0 !important;&quot;);
</code></pre>
<p><a href="https://stackoverflow.com/a/25818398/10347292">https://stackoverflow.com/a/25818398/10347292</a></p>
<p>But it didn't work aswell, here is the opacity of the acutal modal (i want to change it to 0.5) :</p>
<p><a href="https://i.stack.imgur.com/jyzhM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jyzhM.png" alt="enter image description here" /></a></p>
<p><strong>Here is my final code</strong> :</p>
<p><em><strong>html code</strong></em> :</p>
<pre><code>&lt;div&gt;
    &lt;img id=&quot;elem&quot; src=&quot;https://i.stack.imgur.com/flekn.png&quot; alt=&quot;Orange&quot;&gt;
&lt;/div&gt;
</code></pre>
<p><em><strong>JS code (jquery method)</strong></em> :</p>
<pre><code>function enlargeImage() {
    $('#elem').click(function () {
        $('#elem').dialog({
            title: &quot;Image&quot;,
            modal: true,
            width:'auto',
            open: function(event, ui) {
                $(&quot;.ui-widget-overlay&quot;).css(&quot;cssText&quot;, &quot;height: 0 !important;&quot;);
            },
            close:function() {
                  $(this).dialog('destroy').remove();
            }
        });
    });
}

$(document).ready(function(){
    enlargeImage();
});
</code></pre>
<p><strong>Furthermore, i'm working on a big project, so i can't modify the CSS page opacity because it will touch all the others dialog using this <code>opacity</code>, i can only modify this properties with <em><code>jQuery</code></em>...</strong></p>


Can't override the modal opacity with jQuery UI

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我首先尝试更改对话框函数上的opacity，如下所示：open: function(event, ui) {  $('.ui-widget-overlay').css({ opacity: '.5' });},但是它没有起作用，我试图像这样修改css函数，从而再次覆盖opacity：$(".ui-widget-over...

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