blocks|key|2778484|text|不需要“双引号”%2B“单引号”组合|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2778485|console.log(+$('#'%2Bd)+);+//+single+quotes+only
console.log(+$("#"%2Bd)+);+//+double+quotes+only|code-block|syntax|javascript|2778486|您的选择器结果如下所示，这是过度使用引号：|2778487|$('"#abc"')+//+->+it'll+try+to+find++<div+id='"#abc"'>

//+In+css,+this+would+be+the+equivalent:
"#abc"{+/*+Wrong+*/+}+//+instead+of:
#abc{+/*+Right+*/+}|2778488|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<h2>The "double quote" + 'single quote' combo is not needed</h2>

<pre><code>console.log( $('#'+d) ); // single quotes only
console.log( $("#"+d) ); // double quotes only
</code></pre>

Your selector results like this, which is overkill with the quotes:

<pre><code>$('"#abc"') // -&gt; it'll try to find &lt;div id='"#abc"'&gt;

// In css, this would be the equivalent:
"#abc"{ /* Wrong */ } // instead of:
#abc{ /* Right */ }
</code></pre>

blocks|key|2991081|text|尝试使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2991082|console.log($("#"%2Bd));|code-block|syntax|javascript|2991083|这将删除您正在使用的额外引号。|2991084|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|$]]

Try using: 

<pre><code>console.log($("#"+d));
</code></pre>

This will remove the extra quotes you were using.

blocks|key|2778502|text|试试这个(ES5)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2778503|console.log($("#"+%2B++d));|code-block|syntax|javascript|2778504|ES6|2778505|console.log($(`#${d}`));|2778506|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Try this (ES5)

<pre><code>console.log($("#" + d));
</code></pre>

ES6

<pre><code>console.log($(`#${d}`));
</code></pre>

blocks|key|176145|text|试一试|type|unstyled|depth|inlineStyleRanges|entityRanges|data|176146|console.log($("#"%2Bd));|code-block|syntax|javascript|176147|您的解决方案是将双引号作为字符串的一部分进行传递。|176148|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|$]]

try 

<pre><code>console.log($("#"+d));
</code></pre>

your solution is passing the double quotes as part of the string.

blocks|key|2778535|text|在safari中也可能发生这种情况，例如，如果您尝试使用缺少]的选择器|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2778536|$('select[name="something"')|code-block|syntax|javascript|2778537|但有趣的是，这个缺少括号的jquery选择器也可以在chrome中工作。|2778538|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|$]]

This can also happen in safari if you try a selector with a missing ], for example

<pre><code>$('select[name="something"')
</code></pre>

but interestingly, this same jquery selector with a missing bracket will work in chrome.

blocks|key|2991155|text|如果您使用的是jQuery+2.1.4或更高版本，请尝试以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2991156|$("#"+%2B+this.d);|code-block|syntax|javascript|2991157|或者，您可以在使用var之前定义它。它使你的代码变得更简单。|2991158|var+d+=+this.d
$("#"+%2B+d);|2991159|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If you're using jQuery 2.1.4 or above, try this:

<pre><code>$("#" + this.d);
</code></pre>

Or, you can define var before using it. It makes your code simpler.

<pre><code>var d = this.d
$("#" + d);
</code></pre>

blocks|key|2778567|text|我不得不多找一点来解决我的问题，但解决它的是找到错误的地方。Here它展示了如何在Jquery的错误转储中做到这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2778568|在我的例子中，id是空的，$("#"+%2B+id);；产生错误。|style|CODE|2778569|这是我没有注意到的地方，所以这有助于确定它在哪里，这样我就可以排除故障并修复它。|2778570|entityMap|0|LINK|mutability|MUTABLE|url|https://www.kevinleary.net/jquery-syntax-error-unrecognized-expression/#:%257E:text=Uncaught%2520Error%253A%2520Syntax%2520error%252C%2520unrecognized%2520expression%253A%2520...,jQuery%25202.&text=x%252C%2520and%2520will%2520throw%2520an%2520Error%2520in%2520circumstances%2520where%2520jQuery%25201.^0|U|4|0|0|7|2|D|C|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@$A|W|B|X|F|G]|$A|Y|B|Z|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]]]

I had to look a little more to solve my problem but what solved it was finding where the error was. <a href="https://www.kevinleary.net/jquery-syntax-error-unrecognized-expression/#:%7E:text=Uncaught%20Error%3A%20Syntax%20error%2C%20unrecognized%20expression%3A%20...,jQuery%202.&amp;text=x%2C%20and%20will%20throw%20an%20Error%20in%20circumstances%20where%20jQuery%201." rel="nofollow noreferrer">Here</a> It shows how to do that in Jquery's error dump.
In my case <code>id</code> was empty and <code>$(&quot;#&quot; + id);</code>; produces the error.
It was where I wasn't looking so that helped pinpoint where it was so I could troubleshoot and fix it.

blocks|key|2778653|text|对于一些来到这里的人来说，您的id属性中可能有一个特殊字符，因此jQuery无法正确读取它。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|BOLD|entityRanges|data|2778654|2778655|+ID和名称令牌必须以字母(A-Za-z)开头，后面可以是任意数量的字母、数字(0-9)、连字符("-")、下划线("_")、冒号(":")和句点(".")。|blockquote|2778656|2778657|2778658|有关更多详细信息，请查看此答案：What+are+valid+values+for+the+id+attribute+in+HTML?|2778659|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/70579/what-are-valid-values-for-the-id-attribute-in-html#answer-79022^0|F|2|P|4|0|0|0|0|0|G|1F|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|D]]|E|@]|F|$]]|$1|G|3|-4|5|6|7|11|8|@]|E|@]|F|$]]|$1|H|3|I|5|J|7|12|8|@]|E|@]|F|$]]|$1|K|3|-4|5|6|7|13|8|@]|E|@]|F|$]]|$1|L|3|-4|5|6|7|14|8|@]|E|@]|F|$]]|$1|M|3|N|5|6|7|15|8|@]|E|@$9|16|A|17|1|18]]|F|$]]|$1|O|3|-4|5|6|7|19|8|@]|E|@]|F|$]]]|P|$Q|$5|R|S|T|F|$U|V]]]]

For some people coming here, you might have a special character in your <code>id</code> attribute, so jQuery can't read it correctly.
<blockquote>
ID and NAME tokens must begin with a letter ([A-Za-z]) and may be
followed by any number of letters, digits ([0-9]), hyphens (&quot;-&quot;),
underscores (&quot;_&quot;), colons (&quot;:&quot;), and periods (&quot;.&quot;).
</blockquote>
Check this answer for more details:
<a href="https://stackoverflow.com/questions/70579/what-are-valid-values-for-the-id-attribute-in-html#answer-79022">What are valid values for the id attribute in HTML?</a>

<pre class="lang-js prettyprint-override"><code>console.log($('&quot;#'+d+'&quot;'));
</code></pre>
In my HTML, I have:
<pre class="lang-html prettyprint-override"><code>&lt;div id=&quot;2013-10-23&quot;&gt;
 &lt;h1&gt;5&lt;/h1&gt;
 &lt;p&gt;eeeeeeeeeeee&lt;/p&gt;
&lt;/div&gt;
</code></pre>
In the above code, I have one <code>&lt;div&gt;</code> with an <code>id</code> of <code>2013-10-23</code>, and when getting that <code>id</code> it is throwing this syntax error:
<blockquote>
<pre><code>Uncaught Error: Syntax error, unrecognized expression: &quot;#2013-10-23&quot;
</code></pre>
</blockquote>

jQuery: Uncaught Error: Syntax error, unrecognized expression

jQuery

console.log($('"#'+d+'"'));在我的HTML中，我有：<div id="2013-10-23"> <h1>5</h1> eeeeeeeeeeee</div>在上面的代码中，我有一个id为2013-10-23的<div>，当获取该id时，它抛出了这个语法错误：未捕获错误:...

问jQuery:未捕获错误:语法错误，无法识别的表达式
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