How to implement debounce fn into jQuery keyup event?

Question

A calculation is based on user input, and criteria is to use keyup rather than change or blur.

The problem is that the code fi

Answer 1

Use it like this:-

$('input').keyup(debounce(function(){
        var $this=$(this);
        //alert( $this.val() );
        var n1 = $this.val();
        var n2 = $('#n2').val();
        var n3 = $('#n3').val();
        var calc = n1 * n2 * n3;
        alert(calc);
    },500));

Fiddle