Uncaught TypeError: Object [object Object] has no method 'zclip'

Uncaught TypeError: Object [object Object] has no method 'zclip'

I am using click to copy clipboard in my project. It is successfully applied to my project but after I did some modifications on that page it is not working. In my browser console it is showing this error every time " Uncaught TypeError: Object [object Object] has no method 'zclip' "
Tell me the solution how to solve this problem.


<script src="/js/jquery-1.9.1.js"></script>
<script src="/js/jquery.zclip.min.js"></script>
<script>
    $(document).ready(function() {
        $("a.copy").each(function() {
            var id = $(this).attr("id");
            $('a#' + id).zclip({
                path: '/js/ZeroClipboard.swf',
                copy: $('a#' + id).text(),
                url: $('#' + id + '_url').val()
            });

        });
    });
</script>

HTML:
<div class="coupon-container"><a href="#" class="copy" id="textfield" title="Click to copy Coupon code"><core:out escapeXml="true" value="${coupon.couponCode}"/></a></div>