Jquery Slicebox投掷错误

Question

我的jquery切片盒出现以下错误

TypeError: $ is undefined

var $event = $.event,

在slicebox.js附近

( function( $, window, undefined ) {// start of the file and getting error as soon as it calls 1st event
'use strict';

var $event = $.event,// getting error here
$special,
resizeTimeout; 

我正在使用jquery 1.7.0，如果它导致错误，请告诉我。