jQuery 数组随机抽奖

arrayLottery

/**
 * @Description: jQuery 数组随机抽奖
 * @Author: wangjun
 * @Update: 2014-07-22 17:00
 * @Github URL: https://github.com/nevergiveup-j
 */
 
!function($){
	"use strict";

	var lottery = {
		init: function() {
			var that = this;

			that.$number = $('#J_lottery_number');

			if ( !that.$number.length ) {
				return;
			};

			that.$btnStart = $('#J_lottery_btn_start');
			that.$btnEnd = $('#J_lottery_btn_end');

			that.arrayData = iphoneData;
			that.arrayLen = that.arrayData.length;
			that.T_START = null;

			if ( !that.arrayLen ) {
				return;
			}

			that.bind();

		},
		bind: function() {
			var that = this;

			// 开始
			that.$btnStart.bind('click', function() {
				that.startCycle();

				that.$btnStart.addClass('btn-startLottery-ban');
				that.$btnEnd.removeClass('btn-endLottery-ban');
			});

			// 结束
			that.$btnEnd.bind('click', function() {
				that.$btnStart.removeClass('btn-startLottery-ban');
				that.$btnEnd.addClass('btn-endLottery-ban');

				clearInterval( that.T_START );
			})
		},
		/**
		 * 开始循环
		 */
		startCycle: function() {
			var that = this;

			var number = 0,
				iphone = '';

			that.T_START = setInterval(function() {
				number = that.getRandom(0, that.arrayLen);

				iphone = that.arrayData[number];

				that.$number.html( iphone );
			}, 100);
			
			
		},
		/**
		 * 获取随机数字
		 */
		getRandom: function(start, end) {
			return Math.floor(Math.random() * (end - start) + start);
		}
	}

	$(function(){
        lottery.init();
    })
	
}(jQuery);