如何完成H5+CSS3手指拖动切换照片的示例编码

日期:2021-02-22 类型:科技新闻 

关键词:小程序制作流程,抽奖小程序,微信小程序怎么开店,小程序码生成,小程序模版

包括3个文档:html、slider-H5.js、jquery.js。在html中可配备拖动主要参数。实际编码以下:

HTML编码:

<!DOCTYPE HTML>
<html>
    
    <head>
        <meta charset="utf⑻" />
        <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手指拖动切换照片
        </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>
            这里根据回调函数显示信息当今翻转到是多少页:
            <span id="page">
                0
            </span>
        </div>
        <script src="jquery⑴.10.2yuan.js">
        </script>
        <script src="slider-H5.js">
        </script>
        <script>
            (function() {
                /*
    留意:$.mggScrollImg回到的scrollImg目标上有
            next,prev,go3个方式,能够完成外界对翻转数据库索引的操纵。
    如:scrollImg.next();//会切换到下1张照片
        scrollImg.go(0);//会切换到第1张照片
*/
                var scrollImg = $.mggScrollImg('.imgbox ul', {
                    loop: true,
                    //循环系统切换
                    auto: true,
                    //全自动切换
                    auto_wait_time: 3000,
                    //轮播间距
                    scroll_time: 300,
                    //翻转时长
                    callback: function(ind) { //这里传过来的是数据库索引值
                        $('#page').text(ind + 1);
                    }
                });
            })()
        </script>
    </body>

</html>  

slider-H5.js 编码:

(function($) {
    /*
        照片翻转实际效果
        @jQuery or @String box : 翻转目录jQuery目标或挑选器 如:翻转元素为li的外层ul
        @object config : {
                @Number width : 1次翻转宽度,默认设置为box里边第1个1级子元素宽度[假如子元素宽度不匀称则翻转实际效果会紊乱]
                @Number size : 目录长度,默认设置为box里边全部1级子元素个数[假如size不等于1级子元素个数,则不适用循环系统翻转]
                @Boolean loop : 是不是适用循环系统翻转 默认设置 true
                @Boolean auto : 是不是全自动翻转,适用全自动翻转时务必适用循环系统翻转,不然设定失效,默认设置为true
                @Number auto_wait_time : 全自动轮播1次時间间距,默认设置为:3000ms
                @Function callback : 翻转完回调函数涵数,参入1个主要参数当今翻转连接点数据库索引值
            }
    */
    function mggScrollImg(box, config) {
        this.box = $(box);
        this.config = $.extend({},
        config || {});
        this.width = this.config.width || this.box.children().eq(0).width(); //1次翻转的宽度
        this.size = this.config.size || this.box.children().length;
        this.loop = this.config.loop !== undefined ? (this.config.loop == true ? true: false) : true; //默认设置能循环系统翻转
        this.auto = this.config.auto !== undefined ? (this.config.auto == true ? true: false) : true; //默认设置全自动翻转
        this.auto_wait_time = this.config.auto_wait_time || 3000; //轮播间距
        this.scroll_time = this.config.scroll_time !== undefined ? (this.config.scroll_time > 0 ? this.config.scroll_time: 0) : 300; //翻转时长
        this.minleft = -this.width * (this.size - 1); //最少left值,留意是负数[不循环系统状况下的值]
        this.maxleft = 0; //最大lfet值[不循环系统状况下的值]
        this.now_left = 0; //原始部位信息内容[不循环系统状况下的值]
        this.point_x = null; //纪录1个x座标
        this.point_y = null; //纪录1个y座标
        this.move_left = false; //纪录向哪边拖动
        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); //这里依据回到值感觉是不是阻拦默认设置touch恶性事件
                }
            }).bind('touchend',
            function(e) { ! self.busy && self.move_end();
            });
        },
        /*
            原始化循环系统翻转,当1次性必须翻转好几个子元素时,暂不适用循环系统翻转实际效果,
            假如想完成1次性翻转好几个子元素实际效果,能够根据网页页面构造完成
            循环系统翻转思路:拷贝首尾连接点到尾首
        */
        init_loop: function() {
            if (this.box.children().length > 1 && this.box.children().length == this.size && this.loop) { //临时只适用size和子连接点数相同状况的循环系统
                this.now_left = -this.width; //设定原始部位信息内容
                this.minleft = -this.width * this.size; //最少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() { //全自动翻转
            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) { //翻转到特定数据库索引网页页面
            var self = this;
            if (self.busy) return;
            clearTimeout(self.timer);
            self.busy = true;
            if (self.loop) { //假如循环系统
                ind = ind < 0 ? ⑴ : 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 == ⑴ || ind == self.size) { //循环系统翻转界限
                    self.index = ind == ⑴ ? (self.size - 1) : 0;
                    self.now_left = ind == ⑴ ? 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) { //动漫进行回调函数
            var self = this;
            self.busy = false;
            self.config.callback && self.config.callback(self.index);
            if (ind == ⑴) {
                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1页翻转
            if (!this.busy) {
                this.go_index(this.index + 1);
            }
        },
        prev: function() { //上1页翻转
            if (!this.busy) {
                this.go_index(this.index - 1);
            }                                     },
        move: function(point_x, point_y) { //拖动显示屏解决涵数
            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)) { //拖动显示屏角度范畴:PI/3  -- 2PI/3
                return_value = true; //不阻拦默认设置个人行为
            }
            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) { //手指向左划动
                ind = this.index + 1;
            } else if (this.now_left > this.maxleft) { //手指向右划动
                ind = this.index - 1;
            } else if (changeX != 0) {
                if (this.move_left) { //手指向左划动
                    ind = this.index + 1;
                } else { //手指向右划动
                    ind = this.index - 1;
                }
            } else {
                ind = this.index;
            }
            this.point_x = this.point_y = null;
            this.go_index(ind);
        },
        /*
            获得动漫款式,要适配更多访问器,能够拓展该方式
            @int fig : 1 动漫 2  没动漫
        */
        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)'
            };
        }           

    });
    /*
        这里对外出示启用插口,对外出示插口方式
        next :下1页
        prev :上1页
        go :翻转到特定页
    */
    $.mggScrollImg = function(box, config) {
        var scrollImg = new mggScrollImg(box, config);
        return { //对外出示插口
            next: function() {
                scrollImg.next();
            },
            prev: function() {
                scrollImg.prev();
            },
            go: function(ind) {
                scrollImg.go_index(parseInt(ind) || 0);
            }
        }
    }
})(jQuery)

以上便是本文的所有內容,期待对大伙儿的学习培训有一定的协助,也期待大伙儿多多适用脚本制作之家。

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