擅长:python、mysql、java
<blockquote>
<p>escaping <code>/</code> like <code>\/</code>is a good practise but inside of char class, not necessary.<br/>
the <code>*</code> must be changed to <code>+</code>. because <code>*</code> will also match <code>null</code>.<br/>
also remove the <code>-</code> otherwise <code>-</code> will also be matched.</p>
</blockquote>
<p/><div^{cl1}$&13;
<div^{cl2}$&13;
<pre class="snippet-code-js lang-js prettyprint-override"><code>function validate(){
var message = $('#message').val();
if (/^[a-zA-Z0-9/]+$/.test($.trim(message)) == false){
$('#message').focus();
alert('invalid message');
}
}</code></pre>
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^{pr2}$
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</div>和13;
</div>和13;