Special Characters Validation
<p>I have a JQuery code like this:</p>

<pre><code>// Validation to avoid non alphanumeric characters from being typed
function alphanumeric(eventSource) {
    var numaric = eventSource.val();
    for (var j = 0; j &lt; numaric.length; j++) {
        var alphaa = numaric.charAt(j);
        var hh = alphaa.charCodeAt(0);
        // If the value contains non alphanumeric characters
        if (!((hh &gt; 47 &amp;&amp; hh &lt; 58) || (hh &gt; 64 &amp;&amp; hh &lt; 91) || (hh &gt; 96 &amp;&amp; hh &lt; 123))) {
            eventSource.val(numaric.substring(0, j) + numaric.substring(j + 1,  numaric.length));
        }
    }
}
</code></pre>

<p>I am trying to validate the special characters of a text box input.
But somehow, it also validates the space (space bar on keyboard), which the char code is 32.
Advice please, thanks.</p>
