<div>
replace :<br />

<pre><code id="code-20-42562029-1">                if (theRegExp.test(theTextBoxValue)) {
                    $(this).val(window.saveTheValueForCheckingInKeyUp);
                }</code></pre>
by :<br />

<pre><code id="code-20-42562029-2">                if (theRegExp.test(theTextBoxValue)) {
                    var v = window.saveTheValueForCheckingInKeyUp.replace(/&lt;\//g, &quot;&lt; /&quot;);
                    v = v.replace(/\/&gt;/g, &quot;/ &gt;&quot;);
                    $(this).val(v);
                }</code></pre>
</div>


replace :


                if (theRegExp.test(theTextBoxValue)) {
                    $(this).val(window.saveTheValueForCheckingInKeyUp);
                }

by :


                if (theRegExp.test(theTextBoxValue)) {
                    var v = window.saveTheValueForCheckingInKeyUp.replace(/<\//g, "< /");
                    v = v.replace(/\/>/g, "/ >");
                    $(this).val(v);
                }

<div>
leakim971,<br />
<br />
here is the updated fiddle, i replaced the if statement with what you said <br />
<a href="https://jsfiddle.net/r2d22k18/wx0uv6ev/1/" rel="ugc">https://jsfiddle.net/r2d22k18/wx0uv6ev/1/</a><br />
<br />
But space is not being inserted. Do I have a mistake?
</div>


leakim971,

here is the updated fiddle, i replaced the if statement with what you said
https://jsfiddle.net/r2d22k18/wx0uv6ev/1/ [https://jsfiddle.net/r2d22k18/wx0uv6ev/1/]

But space is not being inserted. Do I have a mistake?

<div>
<div class="content wysiwyg-content">
Here is my fiddle<br />
<a href="https://jsfiddle.net/r2d22k18/7gc5pwaj/2/" rel="ugc">https://jsfiddle.net/r2d22k18/7gc5pwaj/2/</a><br />
<br />
I'm trying to prevent typing of this &lt;/ or /&gt;<br />
<br />
In the above fiddle when i type &lt;/ or /&gt; &nbsp;the second character is deleted<br />
<br />
Instead of deleting the second character , how do I just put a space in between.<br />
<br />
So if I type this &lt;/ it will put a space in between and show this &lt;&nbsp;/<br />
So if I type this /&gt; it will put a space in between and show this / &gt;
</div>
</div>


Here is my fiddle
https://jsfiddle.net/r2d22k18/7gc5pwaj/2/

I'm trying to prevent typing of this </ or />

In the above fiddle when i type </ or />  the second character is deleted

Instead of deleting the second character , how do I just put a space in between.

So if I type this </ it will put a space in between and show this < /
So if I type this /> it will put a space in between and show this / >

validating textbox with regex

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

jQuery (Core) is a cross-browser JavaScript library that provides abstractions for common client-side tasks such as Document Object Model (DOM) traversal, DOM manipulation, event handling, animation and Ajax. jQuery also provides a platform to create plugins that extend jQuery's capabilities beyond those already provided by the library.