blocks|key|1247370|text|对于如此简单的事情，您并不真正需要jQuery，您可以简单地使用String对象的indexOf方法，例如：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1247371|var+str+=+"foobar";
var+containsFoo+=+str.indexOf('foo')+>=+0;+//+true|code-block|syntax|javascript|1247372|indexOf方法返回第一次遇到指定值的字符索引，如果未找到，则返回-1。|1247373|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/String/IndexOf^0|15|7|15|7|0|0|0|0|7|Y|2|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

You don't really need jQuery for such a simple thing, you can simply use the <a href="https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/String/IndexOf" rel="noreferrer"><code>indexOf</code></a> method of String objects, e.g.:

<pre><code>var str = "foobar";
var containsFoo = str.indexOf('foo') &gt;= 0; // true
</code></pre>

The <code>indexOf</code> method returns the character index where the first occurrence of the specified value is encountered, if not found, it returns <code>-1</code>.

blocks|key|1032401|text|如果您仅限于JavaScript的jQuery+...您可以使用过滤器|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1032402|var+subgtSel+=+$("#jquerySelector").filter(function(i)+{
++++//+do+your+filter+here
++++return+$(this).attr("data-timestamp")+<=+subMsg.CreateDateTimeStamp;
});|code-block|syntax|javascript|1032403|该subgtSel现在将成为您的新jQuery，并在上面添加了相关的过滤器。在上面的代码中，我查找属性小于subMsg.CreateTimeStamp的所有div元素。|offset|length|style|CODE|1032404|如果您要查找特定的子字符串...您可以在选择器中使用jQuery执行以下操作|1032405|var+sel+=+$("#jquerySelector:contains('text')");|1032406|请参阅http://api.jquery.com/contains-selector/|1032407|entityMap|0|LINK|mutability|MUTABLE|url|http://api.jquery.com/contains-selector/^0|0|0|1|8|0|0|0|3|14|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@$I|13|J|14|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|16|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|17|8|@]|9|@$I|18|J|19|1|1A]]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

If your limited to jQuery which is just JavaScript... you can use the filter

<pre><code>var subgtSel = $("#jquerySelector").filter(function(i) {
 // do your filter here
 return $(this).attr("data-timestamp") &lt;= subMsg.CreateDateTimeStamp;
});
</code></pre>

the <code>subgtSel</code> becomes your new jQuery now with the relevant filter in the above. In the above, I am looking for all div elements that have an attribute that is less than the subMsg.CreateTimeStamp. 

If your looking for a particular substring... you can do the following with jQuery right in the selector

<pre><code>var sel = $("#jquerySelector:contains('text')");
</code></pre>

see <a href="http://api.jquery.com/contains-selector/" rel="nofollow noreferrer">http://api.jquery.com/contains-selector/</a>

blocks|key|1247541|text|100个字符就可以了，为什么还要用10个字符呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1247542|这是请求的jQuery插件：|1247543|jQuery.isSubstring+=+function(haystack,+needle)+{
++++return+haystack.indexOf(needle)+!==+-1;
};|code-block|syntax|javascript|1247544|用法：|1247545|$.isSubstring("hello+world",+"world"));+//+true;​​​​​​​​​​​|1247546|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Why use 10 characters when 100 will do?

Here's the requested jQuery plugin:

<pre><code>jQuery.isSubstring = function(haystack, needle) {
 return haystack.indexOf(needle) !== -1;
};
</code></pre>

Usage:

<pre><code>$.isSubstring("hello world", "world")); // true;​​​​​​​​​​​
</code></pre>

How would our group find out if a particular string contains a certain substring? Only with the help of <a href="/questions/tagged/jquery" class="post-tag" title="show questions tagged &#39;jquery&#39;" rel="tag">jquery</a>, please.

Find substring with Jquery?

jQuery

我们的小组如何找出特定字符串是否包含特定的子字符串？只有在的帮助下才行。

问使用Jquery查找子字符串？
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