how to show input value from one input into another
<p>I have this code here <a href="http://jsfiddle.net/RzBeM/65/" rel="nofollow">http://jsfiddle.net/RzBeM/65/</a> you will see two input fields called quantity. Basically the first part multiplies the quantity by the Card Points value and returns a value and in the second part the quantity multiplies by the Card Value and gives a value. The problem is i have to enter in the number into both inputs i would like to have one input but do both multiplications at once. Also if you type in a value and erase it it displays NaN how do i prevent that?</p>
