dojo/debounce.js

define([], function(){

    // module:

    //      dojo/debounce

    // summary:

    //      This module provide a debouncer

    return function(cb, wait){

        // summary:

        //      Create a function that will only execute after `wait` milliseconds

        // description:

        //      Create a function that will only execute after `wait` milliseconds

        //      of repeated execution. Useful for delaying some event action slightly to allow

        //      for rapidly-firing events such as window.resize, node.mousemove and so on.

        // cb: Function

        //      A callback to fire. Like hitch() and partial(), arguments passed to the

        //      returned function curry along to the original callback.

        // wait: Integer

        //      Time to spend caching executions before actually executing.

        var timer;

        return function(){

            if(timer){

                clearTimeout(timer);

            }

            var self = this;

            var a = arguments;

            timer = setTimeout(function(){

                cb.apply(self, a);

            }, wait);

        };

    };

});