Validation for input boxes in jQuery or in Javascript
<p>I have 4 input boxes , and I want user enter only one  number from 1, 2, 3, 4 in that boxes.
If user enter number 1 in one box then he not use 1 number in other box, i.e user enter one number at one time, if list of input boxes goes to increase, this logic is not fail.
The image is shown below, user use only 1 to 4 number, and he use one number at once.</p>

<p><img src="http://i.stack.imgur.com/EJYTU.png" alt="enter image description here"></p>
