H5 CSS3实现手指滑动切换图片

原文链接: https://www.mk2048.com/blog/blog.php?id=h002ib2c2c1j&title=H5%2BCSS3%E5%AE%9E%E7%8E%B0%E6%89%8B%E6%8C%87%E6%BB%91%E5%8A%A8%E5%88%87%E6%8D%A2%E5%9B%BE%E7%89%87

包含3个文件:html、slider-H5.js、jquery.js(自行下载)。在html中可配置滑动参数。具体代码如下:

HTML代码:

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<meta name="viewport" content = "width=device-width, target-densitydpi=high-dpi, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<meta content="telephone=no" name="format-detection" />
<meta name="keywords" content="seokeywords"/>
<meta name="description" content="seodescription"/>
<title>H5手指滑动切换图片</title>
<style>
ul,li{margin:0;padding:0;}
@media screen and (min-width:240px) {
    html, body{
        font-size:9px;
    }
}
@media screen and (min-width:320px) {
    html, body{
        font-size:12px;
    }
}
@media screen and (min-width:480px) {
    html, body{
    font-size:18px;
    }
}
@media screen and (min-width:640px) {
    html, body{
        font-size:24px;
    }
}
@media screen and (min-width:960px) {
    html, body{
        font-size:36px;
    }
}
div.imgbox{width:25rem;height:16.5rem;overflow:hidden;margin:0 auto;}
div.imgbox ul{clear:both;width:75rem;display: inline-block;}
div.imgbox ul li{float:left;width:25rem;height:16.5rem;overflow:hidden;text-align:center;}
div.imgbox ul li img{width:24rem;height:16.5rem;}
#page{color:red;}
</style>
</head>
<body>
<div class="imgbox">
    <ul>
        <li><a href="#"><img src="http://y2.ifengimg.com/df84c07b46e03f8e/2014/0512/rdn_53708f3d8533e.jpg"></img></a></li>
        <li><a href="#"><img src="http://y2.ifengimg.com/df84c07b46e03f8e/2014/0512/rdn_53708f23aad06.jpg"></img></a></li>
        <li><a href="#"><img src="http://y2.ifengimg.com/df84c07b46e03f8e/2014/0512/rdn_53708f345282b.jpg"></img></a></li>
    </ul>
</div>
<div>这里通过回调显示当前滚动到多少页:<span id="page">0</span></div>
<script src="jquery-1.10.2yuan.js"></script>
<script src="slider-H5.js"></script>
<script>
(function(){
/*
    注意:$.mggScrollImg返回的scrollImg对象上有
            next,prev,go三个方法,可以实现外部对滚动索引的控制。
    如:scrollImg.next();//会切换到下一张图片
        scrollImg.go(0);//会切换到第一张图片
*/
var scrollImg = $.mggScrollImg('.imgbox ul',{
        loop : true,//循环切换
        auto : true,//自动切换
        auto_wait_time:3000,//轮播间隔
        scroll_time:300,//滚动时长
        callback : function(ind){//这里传过来的是索引值
            $('#page').text(ind 1);
        }
    });
})()
</script>
</body>
</html>
View Code

slider-H5.js 代码

(function($){
    /*
        图片滚动效果
        @jQuery or @String box : 滚动列表jQuery对象或者选择器 如:滚动元素为li的外层ul
        @object config : {
                @Number width : 一次滚动宽度,默认为box里面第一个一级子元素宽度[如果子元素宽度不均匀则滚动效果会错乱]
                @Number size : 列表长度,默认为box里面所有一级子元素个数[如果size不等于一级子元素个数,则不支持循环滚动]
                @Boolean loop : 是否支持循环滚动 默认 true
                @Boolean auto : 是否自动滚动,支持自动滚动时必须支持循环滚动,否则设置无效,默认为true
                @Number auto_wait_time : 自动轮播一次时间间隔,默认为:3000ms
                @Function callback : 滚动完回调函数,参入一个参数当前滚动节点索引值
            }
    */
    function mggScrollImg(box,config){
        this.box = $(box);
        this.config = $.extend({},config||{});
        this.width = this.config.width||this.box.children().eq(0).width();//一次滚动的宽度
        this.size = this.config.size||this.box.children().length;
        this.loop = this.config.loop!==undefined ? (this.config.loop==true ? true : false) : true;//默认能循环滚动
        this.auto =this.config.auto!==undefined ? (this.config.auto==true ? true : false) : true;//默认自动滚动
        this.auto_wait_time = this.config.auto_wait_time||3000;//轮播间隔
        this.scroll_time =this.config.scroll_time!==undefined?(this.config.scroll_time>0?this.config.scroll_time:0) : 300;//滚动时长
        this.minleft = -this.width*(this.size-1);//最小left值,注意是负数[不循环情况下的值]
        this.maxleft =0;//最大lfet值[不循环情况下的值]
        this.now_left = 0;//初始位置信息[不循环情况下的值]
        this.point_x = null;//记录一个x坐标
        this.point_y = null;//记录一个y坐标
        this.move_left = false;//记录向哪边滑动
        this.index = 0;
        this.busy = false;
        this.timer;
        this.init();
    }
    $.extend(mggScrollImg.prototype,{
        init : function(){
            this.bind_event();
            this.init_loop();
            this.auto_scroll();
        },
        bind_event : function(){
            var self = this;
            self.box.bind('touchstart',function(e){
                var t=e.touches?e.touches:e.originalEvent.targetTouches;
                if(t.length==1 && !self.busy){
                    self.point_x = t[0].screenX;
                    self.point_y = t[0].screenY;
                }
            }).bind('touchmove',function(e){
                var t=e.touches?e.touches:e.originalEvent.targetTouches;
                if(t.length==1 && !self.busy){
                    return self.move(t[0].screenX,t[0].screenY);//这里根据返回值觉得是否阻止默认touch事件
                }
            }).bind('touchend',function(e){
                !self.busy && self.move_end();
            });
        },
        /*
            初始化循环滚动,当一次性需要滚动多个子元素时,暂不支持循环滚动效果,
            如果想实现一次性滚动多个子元素效果,可以通过页面结构实现
            循环滚动思路:复制首尾节点到尾首
        */
        init_loop : function(){
             if(this.box.children().length>1 && this.box.children().length == this.size && this.loop){//暂时只支持size和子节点数相等情况的循环
                this.now_left = -this.width;//设置初始位置信息
                this.minleft = -this.width*this.size;//最小left值
                this.maxleft = -this.width;
                this.box.prepend(this.box.children().eq(this.size-1).clone()).append(this.box.children().eq(1).clone()).css(this.get_style(2));
                this.box.css('width',this.width*(this.size 2));
            }else{
                this.loop = false;
                this.box.css('width',this.width*this.size);
            }
        },
        auto_scroll : function(){//自动滚动
            var self = this;
            if(!self.auto)return;
            clearTimeout(self.timer);
            self.timer = setTimeout(function(){
                self.go_index(self.index 1);
            },self.auto_wait_time);
        },
        go_index : function(ind){//滚动到指定索引页面
            var self = this;
            if(self.busy)return;
            clearTimeout(self.timer);
            self.busy = true;
            if(self.loop){//如果循环
                ind = ind<0?-1:ind;
                ind = ind>self.size?self.size:ind;
            }else{
                ind = ind<0?0:ind;
                ind = ind>=self.size?(self.size-1):ind;
            }
            if(!self.loop && (self.now_left == -(self.width*ind))){
                self.complete(ind);
            }else if(self.loop && (self.now_left == -self.width*(ind 1))){
                self.complete(ind);
            }else{
                if(ind == -1 || ind == self.size){//循环滚动边界
                    self.index = ind==-1?(self.size-1):0;
                    self.now_left = ind==-1?0:-self.width*(self.size 1);
                }else{
                    self.index = ind;
                    self.now_left = -(self.width*(self.index (self.loop?1:0)));
                }
                self.box.css(this.get_style(1));
                setTimeout(function(){
                    self.complete(ind);
                },self.scroll_time);
            }
        },
        complete : function(ind){//动画完成回调
            var self = this;
            self.busy = false;
            self.config.callback && self.config.callback(self.index);
            if(ind==-1){
                self.now_left = self.minleft;
            }else if(ind==self.size){
                self.now_left = self.maxleft;
            }
            self.box.css(this.get_style(2));
            self.auto_scroll();
        },
        next : function(){//下一页滚动
            if(!this.busy){
                this.go_index(this.index 1);
            }
        },
        prev : function(){//上一页滚动
            if(!this.busy){
                this.go_index(this.index-1);
            }
        },
        move : function(point_x,point_y){//滑动屏幕处理函数
            var changeX = point_x - (this.point_x===null?point_x:this.point_x),
                changeY = point_y - (this.point_y===null?point_y:this.point_y),
                marginleft = this.now_left, return_value = false,
                sin =changeY/Math.sqrt(changeX*changeX changeY*changeY);
            this.now_left = marginleft changeX;
            this.move_left = changeX<0;
            if(sin>Math.sin(Math.PI/3) || sin<-Math.sin(Math.PI/3)){//滑动屏幕角度范围:PI/3  -- 2PI/3
                return_value = true;//不阻止默认行为
            }
            this.point_x = point_x;
            this.point_y = point_y;
            this.box.css(this.get_style(2));
            return return_value;
        },
        move_end : function(){
            var changeX = this.now_left%this.width,ind;
            if(this.now_left<this.minleft){//手指向左滑动
                ind = this.index  1;
            }else if(this.now_left>this.maxleft){//手指向右滑动
                ind = this.index-1;
            }else if(changeX!=0){
                if(this.move_left){//手指向左滑动
                    ind = this.index 1;
                }else{//手指向右滑动
                    ind = this.index-1;
                }
            }else{
                ind = this.index;
            }
            this.point_x = this.point_y = null;
            this.go_index(ind);
        },
        /*
            获取动画样式,要兼容更多浏览器,可以扩展该方法
            @int fig : 1 动画 2  没动画
        */
        get_style : function(fig){
            var x = this.now_left ,
                time = fig==1?this.scroll_time:0;
            return {
                '-webkit-transition':'-webkit-transform ' time 'ms',
                '-webkit-transform':'translate3d(' x 'px,0,0)',
                '-webkit-backface-visibility': 'hidden',
                'transition':'transform ' time 'ms',
                'transform':'translate3d(' x 'px,0,0)'
            };
        }
    });
    /*
        这里对外提供调用接口,对外提供接口方法
        next :下一页
        prev :上一页
        go :滚动到指定页
    */
    $.mggScrollImg = function(box,config){
        var scrollImg = new mggScrollImg(box,config);
        return {//对外提供接口
            next : function(){scrollImg.next();},
            prev : function(){scrollImg.prev();},
            go : function(ind){scrollImg.go_index(parseInt(ind)||0);}
        }
    }
})(jQuery)
View Code

参考:http://www.cnblogs.com/huzhiming/p/3732688.html(修改了源代码的部分bug:循环参数loop和自动切换参数配置无效;新增滚动时长配置;只有一张图片时不允许切换。)


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转载自blog.csdn.net/qq_29069777/article/details/102709556