jquery实现走马灯特效实例(扑克牌切换效果)

话不多说,先上大致效果:

本着程序员的开源精神,代码奉上:

html代码:

  • 图一
  • 图二
  • 图三

注意:

  • 类名不要随意更改(否则插件里面的也要更改),替换图片地址即可。
  • data-setting属性记得按照以上格式设置,不然可能报错

script代码:



	

注意:
要记得先引入jquery.js文件(可去官网下载:https://jquery.com/download/),再引入jquery.pokerCarousel.js文件

jquery.pokerCarousel.js文件完整代码:

var MIDDLE_PIC_POS = 1

//计算如何用最短的距离移动到目标
//由于有两种移动方式,向左边移动或者像右边移动,只需要在这两种方式中选择一个小的就行了

;(function($){
    var pokerCaroursel = function (caroursel){
        var self = this;
        this.caroursel = caroursel;
        this.pokerList = caroursel.find(".poker-list");
        this.pokerItems = caroursel.find(".poker-item");
        this.firstpokerItem = this.pokerItems.first();
        this.lastpokerItem = this.pokerItems.last();
        this.prevBtn = this.caroursel.find(".poker-prev-btn");
        this.nextBtn = this.caroursel.find(".poker-next-btn");

        this.buttonItems = caroursel.find(".tabBtn");

        //每个移动元素的位置索引,用于记录每个元素当前的位置,在每次移动的时候,该数组的值都会发生变化
        //数组的下标对应li元素的位置索引
        this.curPositions = [];
        for(var i = 0;i this.curPositions.length) {//移动超过末尾,则位置变成到开头
                    nextPos = nextPos - this.curPositions.length;
                }else 
                 if (nextPos < 1) {向左边移动已经移动到开始位置更左边,则位置变成结束
                     nextPos = this.curPositions.length + nextPos;
                 }
                this.curPositions[i] = nextPos;
            }
            //console.log('after refreshPositions',this.curPositions);
            this.refreshCss();
        },

         cal_move_path:function(curPos,desPos,arraySize) {
            if(curPos == desPos) return null;
            //往左边移动
             var goRightSteps;
             var goLeftSteps;
             var retDirect;
             var retStep;
             if(curPos > desPos){
                 goRightSteps = curPos - desPos;
                 goLeftSteps = desPos + (arraySize - curPos);
                 retDirect = (goRightSteps <= goLeftSteps) ? "left":"right";
                 return {"direct":retDirect,"step":Math.min(goLeftSteps,goRightSteps)};
             }
        },


        //点击位置按钮,根据点击的按钮索引 决定向左还是向右移动[因为只有三个位置,该方法能够仅靠向左或向右就能将
        //指定的位置移动到中间]
        clickPosButtonIndex:function(index){
            var self = this;
            if(self.rotateFlag == false) {//目前正在移动等移动结束后才能进入
                return;
            }

            var curPos = this.curPositions[index];
            var retPath = this.cal_move_path(curPos,MIDDLE_PIC_POS,this.curPositions.length);
            if (retPath == null){
                return;
            }

            var direct = retPath.direct;
            var step = retPath.step;

            self.rotateFlag = false;
            self.rotateAnimate(direct,step)
        },

        rotateAnimate:function(type,step){
            step = step || 1;
            var that = this;
            var zIndexArr = [];
            var speed = that.setting.speed;
                this.pokerItems.each(function(){
                   var self = $(this);
                   var destPic = null;
                   var curPic = self;
                   for (var i = 0; i < step;++i){
                        if(type == "left"){// 向左边移动, 下一张图片在自己的右边,所以用next()
                            destPic = curPic.next().get(0)?curPic.next():that.firstpokerItem;
							
                        }
                        else{
                            destPic = curPic.prev().get(0)?curPic.prev():that.lastpokerItem;
                        }
                        curPic = destPic;
                    }

                    var width = destPic.css("width");
                    var height = destPic.css("height");
                    var zIndex = destPic.css("zIndex");
                    var opacity = destPic.css("opacity");
                    var left = destPic.css("left");
                    var top = destPic.css("top");
                    zIndexArr.push(zIndex);
                    self.animate({
                        "width":width,
                        "height":height,
                        "left":left,
                        "opacity":opacity,
                        "top":top
                    },speed,function(){
                        that.rotateFlag = true;
                    });
                });
                this.pokerItems.each(function(i){
                    $(this).css("zIndex",zIndexArr[i]);
					
                });

                if (type == 'right'){
                    this.refreshPositions(-step);
                }else{
                    this.refreshPositions(step);
                }
        },

        setFirstPosition:function(){
            this.caroursel.css({"width":this.setting.width,"height":this.setting.height});
            this.pokerList.css({"width":this.setting.width,"height":this.setting.height});
            var width = (this.setting.width - this.setting.pokerWidth) / 2;

            console.log(this.pokerItems.length)
            this.prevBtn.css({"width":width , "height":this.setting.height,"zIndex":Math.ceil(this.pokerItems.length/2)});
            this.nextBtn.css({"width":width , "height":this.setting.height,"zIndex":Math.ceil(this.pokerItems.length/2)});
            this.firstpokerItem.css({
                "width":this.setting.pokerWidth,
                "height":this.setting.pokerHeight,
                "left":width,
                "zIndex":Math.ceil(this.pokerItems.length/2),
                "top":this.setVertialType(this.setting.pokerHeight)
            });
        },
        setSlicePosition:function(){
            var _self = this;
            var sliceItems = this.pokerItems.slice(1),
                level = Math.floor(this.pokerItems.length/2),
                leftItems = sliceItems.slice(0,level),
                rightItems = sliceItems.slice(level),
                pokerWidth = this.setting.pokerWidth,
                pokerHeight = this.setting.pokerHeight,
                Btnwidth = (this.setting.width - this.setting.pokerWidth) / 2,
                gap = Btnwidth/level,
                containerWidth = this.setting.width;

            var i = 1;
            var leftWidth = pokerWidth;
            var leftHeight = pokerHeight;
            var zLoop1 = level;
            leftItems.each(function(index,item){
                var scale = _self.setting.scale;
                if(index==1){
                    scale = scale*scale;
                }
                leftWidth = pokerWidth * scale;
                leftHeight = pokerHeight*scale;
                $(this).css({
                    "width":leftWidth,
                    "height":leftHeight,
                    "left": Btnwidth - i*gap,
                    "zIndex":zLoop1--,
                    "opacity":2/(i+1),
                    "top":_self.setVertialType(leftHeight)
                });
                i++;
            });

            var j = level;
            var zLoop2 = 1;
            var rightWidth = pokerWidth;
            var rightHeight = pokerHeight;
            rightItems.each(function(index,item){
                var scale = _self.setting.scale;
                if(index==0){
                    scale = scale*scale;
                }
                var rightWidth = pokerWidth * scale;
                var rightHeight = pokerHeight*scale;
                $(this).css({
                    "width":rightWidth,
                    "height":rightHeight,
                    "left": containerWidth -( Btnwidth - j*gap + rightWidth),
                    "zIndex":zLoop2++,
                    "opacity":2/(j+1),
                    "top":_self.setVertialType(rightHeight)
                });
                j--;
            });
        },
        getSetting:function(){
            var settting = this.caroursel.attr("data-setting");
            if(settting.length > 0){
                return $.parseJSON(settting);
            }else{
                return {};
            }
        },
        setVertialType:function(height){
            var align = this.setting.align;
            if(align == "top") {
                return 0
            }else if(align == "middle"){
                return (this.setting.pokerHeight - height) / 2
            }else if(align == "bottom"){
                return this.setting.pokerHeight - height
            }else {
                return (this.setting.pokerHeight - height) / 2
            }
        }
    };
    pokerCaroursel.init = function (caroursels){
        caroursels.each(function(index,item){
            new pokerCaroursel($(this));
        })  ;
    };
    window["pokerCaroursel"] = pokerCaroursel;
})(jQuery);// JavaScript Document

css代码:

.main-box{ height: 352px; width:1118px;position: absolute;top: 122px;left: 32px;}
.poker_box h2 {font-size: 30px;color: #015293;font-weight: bold;text-align: center;}
.poker_box h3 {font-size: 16px;color: #015293;margin: 10px 0 35px;text-align: center;}
.poker-content {width: 1129px;position: relative;width: 100%;height: 350px!important;margin-left: auto;margin-right: auto;}
.poker-content img {display: block;box-shadow: 0px 0px 10px #222222;-webkit-box-shadow: 0px 0px 10px #222222;border: 0;}

.poker-content a, .poker-content img {display: block;width: 100%;height: 100%;border: none;}
img {border: none;display: block;}
.poker-content .poker-list {width: 1118px;height: 500px;}
.poker-content .poker-list .poker-item {width: 200px;height: 350px;position: absolute;left: 0;top: 0;}
.poker-rad{  border-radius: 20px;  overflow: hidden;}
.poker-rai{  border-radius: 20px;  overflow: hidden;}
.poker-content .poker-list .poker-item .item {position: relative;width: 100%;height: 100%;}
.poker-content .poker-btn {position: absolute;top: 0;cursor: pointer;filter: opacity(.5) brightness(1);}
.poker-content .poker-btn:hover {filter: opacity(1) brightness(2);}
.poker-content .poker-prev-btn {left: 0;}
.poker-content .poker-next-btn {right: 0;}
.poker-item-title {background:rgba(42, 42, 42, 0.8) none repeat scroll 0 0 !important;/*实现FF背景透明,文字不透明*/filter:Alpha(opacity=80); background:#2a2a2a;text-align: center;color: #FFF;width: 100%;height: 52px;line-height: 52px;position: absolute;bottom: 0;text-indent: 29px}

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