jquery 烟花效果(面向对象)

<!DOCTYPE>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>烟花效果(面向对象)</title>
    <style type="text/css">
        *{padding: 0;margin: 0}
        body{overflow: hidden;width: 100%;height: 100%;background: #000; }
        div{position: absolute;background: #000;color: #fff}
    </style>
    <script src="jquery-1.8.3.min.js"></script></script>


</head>

<body>
<script type="text/javascript">
   var firWorks = {
        init : function(){  //初始化
            var _that = this;
             $(document).bind("click",function(e){
                _that.eventLeft = e.pageX;
                _that.eventTop = e.pageY;
                _that.createCylinder();
             });
        },
        createCylinder : function(event){  //创建一个花筒
            var _that = this;
            this.cHeight = document.documentElement.clientHeight;//浏览器高度
            this.cylinder = $("<div/>");
            $("body").append(this.cylinder);
            this.cylinder.css({"width":4,"height":15,"background-color":"red","top":this.cHeight,"left":this.eventLeft});
            this.cylinder.animate({top:this.eventTop},600,function(){
                $(this).remove();
                _that.createFlower();
            })
        },
        createFlower : function(){   //创建很多很多的烟花哇!!
            /*烟花效果
            *1.烟花是很多个DIV构成
            *2.每个烟花的颜色不一样
            *3.烟花的位置也不一样
            *4.烟花散开方向不一样
            *5.烟花有下坠感觉
            */
            //通过循环可以创建你想要的烟花啦!!!
            var  _that = this;
            for(var i = 0 ; i < 30; i++  ){
                $("body").append($("<div class='flower'></div>"));
            };
            $(".flower").css({"width":3,"height":3,"top":this.eventTop,"left":this.eventLeft});
            $(".flower").each(function(index, element) {
                var $this = $(this);
                var yhX = Math.random()*400-200;
                var yhY = Math.random()*600-300;
                _that.changeColor();
                $this.css({"background-color":"#"+_that.randomColor,"width":3,"height":3}).animate({"top":_that.eventTop-yhY,"left":_that.eventLeft-yhX},500);//散开
                for(var i=0;i<30;i++){
                    //判断鼠标点击时的右边烟花还是左边烟花
                    if(yhX<0){
                        _that.downPw($this,"+");//右下坠
                    }else{
                        _that.downPw($this,"-");//左下坠
                    }
                }
            });                  
        },
        changeColor : function(){
            /*烟花的颜色是随机的,而且是用16进制表示色值,所以用随机数结合16进制;
            *16进制的最大值ffffff,转换成十进制16777215;
            *Math.random()*16777215公式可以得到0-16777215之间的数,因为是小数,所以要用到取整;
            *Math.ceil(Math.random()*16777215)生成一个在颜色值范围内的,随机的十进制值;
            *Math.random()*9+1公式可以得到1-10之间的数,以此类推
            *.toString(16)方法,是把得到的十进制,转换成16进制,也就是随机的颜色值了;
            */              
            this.randomColor  = "";
            this.randomColor = Math.ceil(Math.random()*16777215).toString(16)//;
            //当这个产生的随机的颜色值,不足6位数的进候,需要补齐,又不改变其值,所以要在这个数的前面加零;
            while(this.randomColor.length<6){
                this.randomColor = "0"+this.randomColor;
            }
        },
        downPw : function(ele,type){  //烟花下坠啦  !!!!
            ele.animate({"top":"+=30","left":type+"=4"},50,function(){
                 setTimeout(function(){ele.remove()},2000);
            })
        }
   };
   firWorks.init();
</script>

</body>
</html>

 

posted @ 2013-07-08 01:15  -恩恩-  阅读(887)  评论(0编辑  收藏  举报