How do I check if a string is NOT a floating number?
<pre><code>var num = "10.00";
if(!parseFloat(num)&gt;=0)
{
    alert("NaN");
}
else
{
    alert("Number");
}
</code></pre>

<p>I want to check if a value is not a float number, but the above code always returns <code>NaN</code>, any ideas what I am doing wrong?</p>
