<div>
I would try 
<pre><code id="code-20-42680774-1">([a-zA-Z0-9]+-?)+</code></pre>
<a href="https://regexr.com/3vf1b" rel="ugc">https://regexr.com/3vf1b</a>
</div>


I would try

([a-zA-Z0-9]+-?)+

https://regexr.com/3vf1b [https://regexr.com/3vf1b]

<div>
Hi zc2,<br />
That doesn't seem to work, &nbsp;as it allows anything I've tested, good or bad?
</div>


Hi zc2,
That doesn't seem to work,  as it allows anything I've tested, good or bad?

<div>
Could you post an input string which should not match?
</div>


Could you post an input string which should not match?

<div>
Hi Zc2,<br />
Try these two:<br />
<br />
*********8<br />
s@#$%^^
</div>


Hi Zc2,
Try these two:

*********8
s@#$%^^

<div>
HI,<br />
I tested again and it still works for strings ending with a hyphen but it shouldn't. Examples that should fail:<br />
<br />
xxxxxxxx-xxxx-xxxx-xxxx-xx<wbr />xxxxxxxxxx<wbr />-xxxx-<br />
123-sx2M-34-
</div>


HI,
I tested again and it still works for strings ending with a hyphen but it shouldn't. Examples that should fail:

xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx-xxxx-
123-sx2M-34-

<div>
<pre><code id="code-20-42680845-1">[a-zA-Z0-9\-]+</code></pre>
<a href="https://regex101.com/r/hRXTDF/1" rel="ugc">https://regex101.com/r/hRXTDF/1</a>
</div>


[a-zA-Z0-9\-]+

https://regex101.com/r/hRXTDF/1 [https://regex101.com/r/hRXTDF/1]

<div>
How about this:
<pre><code id="code-20-42680854-1">^([a-zA-Z0-9]+-)+[a-zA-Z0-9]+$</code></pre>
<br />
<a href="https://regex101.com/r/GVxhMn/3" rel="ugc">https://regex101.com/r/GVxhMn/3</a>
</div>


How about this:

^([a-zA-Z0-9]+-)+[a-zA-Z0-9]+$


https://regex101.com/r/GVxhMn/3 [https://regex101.com/r/GVxhMn/3]

<div>
Hi Shaun,<br />
I believe it still allows strings ending with a hyphen which I do not want.<br />
<br />
Thanks!
</div>


Hi Shaun,
I believe it still allows strings ending with a hyphen which I do not want.

Thanks!

<div>
This works: &nbsp;^[a-zA-Z0-9]+(-[a-zA-Z0-9]<wbr />+)*$
</div>


This works:  ^[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*$

<div>
<div class="content wysiwyg-content">
I'm looking for a &nbsp;Javascript regx that will detect a-z (case insensitive) &nbsp;or 09 as a group and then a hyphen followed by any group &nbsp;of a-z or 09 &nbsp;etc. Always will start/end with (a-z or 09) For example:<br />
<br />
a12dd3-23-fff-11n3N33n3-98<wbr />8<br />
9fkr-rtt488-344-45<br />
r5999999Rrp-4-yei388dfi3-3<wbr />444-fjj577<wbr />-23<br />
xxxxxxxx-xxxx-xxxx-xxxx-xx<wbr />xxxxxxxxxx<wbr /><br />
1234-567-8-922-222222-2-11<wbr />11
</div>
</div>


I'm looking for a  Javascript regx that will detect a-z (case insensitive)  or 09 as a group and then a hyphen followed by any group  of a-z or 09  etc. Always will start/end with (a-z or 09) For example:

a12dd3-23-fff-11n3N33n3-988
9fkr-rtt488-344-45
r5999999Rrp-4-yei388dfi3-3444-fjj577-23
xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
1234-567-8-922-222222-2-1111

JavaScript Regex for 0-9/A-Z pattern match with Hyphen

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.

Regular Expressions

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.