移动web：翻页场景动画_html/css_WEB-ITnose

在移动web，特别是在微信中，经常看到一种翻页动画效果，也称为场景动画。

一页一页的翻过，像在看书，每页的内容以各种 "炫酷" 的效果出现在你的眼里，配上一首动听的音乐，你有没有喜欢上呢。

这里没有音乐，没有炫酷的出场，只有实实在在的翻页。z

先看看效果（ 如果不能查看 复制下面的代码保存在本地查看 ）

一生就这么一次，

谈一场以结婚为目的的恋爱吧。

不再因为任性而不肯低头，

不再因为固执而轻言分手。

最后地坚信一次，一直走，就可以到白头。

惟愿这一生，执子之手，与子偕老。

你敢天长，我就敢地久。

深思熟虑之后我们决定

为爱情做出重要的延续

邀请您一起见证

先贴上代码， 仅供参考

/** * LBS slidePage 绝对定位方式 支持WP * Date: 2014-11-20 * =================================================== * opts.el 外围包裹容器/滑动事件对象(一个字符串的CSS选择器或者元素对象) * opts.index 索引(默认0) 指定显示哪个索引的页 * opts.current    当前页添加的类名(默认'current') * opts.navShow 是否需要导航指示 默认false不需要  * opts.navClass 导航指示容器的类名 方便设置样式 (默认'slide-nav')  * opts.auto 是否自动播放 默认false * opts.delay 自动播放间隔时间 默认5000(单位毫秒) 自动播放时有效 * opts.locked 是否锁定头尾滑动  默认false 如果开启则不能使用自动播放 * opts.effect 动画效果(平移=translate 缩放=scale 重叠=overlap) 默认平移 * opts.duration 动画持续时间 默认300(单位毫秒)  * opts.minScale 动画效果为缩放时的最小缩放比率(0 ~ 1) 1为没有缩放效果 默认0.5 * opts.start 手指按下时 执行函数 * opts.move 手指移动中 执行函数 * opts.end 手指收起后 执行函数 * =================================================== * this.box 包裹页的容器对象 * this.index 当前索引 * this.length 有多少页 最后一页的索引为 this.length-1 * this.play 调用自动播放的方法  * this.stop 清除自动播放的方法 * this.up 手动调用向上滑动翻页的方法 方便增加点击按钮时调用 * this.down 手动调用向下滑动翻页的方法 * =================================================== **/;(function() {    window.slidePage = function(opts) {        opts = opts || {};        if (opts.el === undefined) return;        this.box = typeof opts.el === 'string' ? document.querySelector(opts.el) : opts.el;        this.pages = this.box.children;        this.length = this.pages.length;        if (this.length < 1) return;        if (opts.index > this.length - 1) opts.index = 0;        this.body = document.getElementsByTagName('body')[0];        this.nav = null;        this.navs = [];        this.navShow = !!opts.navShow || false;        this.navClass = opts.navClass || 'slide-nav';        this.index = this.oIndex = opts.index || 0;        this.current = opts.current || 'current';        this.locked = !!opts.locked || false;        this.auto = !!opts.auto || false;        this.auto && (this.delay = opts.delay || 5000);        this.effect = opts.effect || 'translate';        this.duration = opts.duration || 300;        this.minScale = opts.minScale || 0.5;        this.start = opts.start || function() {};        this.move = opts.move || function() {};        this.end = opts.end || function() {};        this.timer = null;        this.animated = true;        this.touch = {};        this.point = '';        this.init();    };    slidePage.prototype = {        init: function() {            this.navShow && this.createNav();            this.initSet();            this.bind();        },        createNav: function() {            var li = null,                i = 0;            this.nav = document.createElement('ul');            for (; i < this.length; i++) {                li = document.createElement('li');                this.navs.push(li);                this.nav.appendChild(li);            }            this.nav.className = this.navClass;            this.body.appendChild(this.nav);        },        initSet: function() {            this.height = document.documentElement.clientHeight || document.body.clientHeight;            if (this.css(this.box, 'position') !== 'absolute' || this.css(this.box, 'position') !== 'relative') this.box.style.position = 'relative';            if (this.css(this.box, 'overflow') !== 'hidden') this.box.style.overflow = 'hidden';            this.box.style.height = this.height + 'px';            for (var i = 0; i < this.length; i++) {                if (this.css(this.pages[i], 'display') !== 'none') this.pages[i].style.display = 'none';                if (this.css(this.pages[i], 'position') !== 'absolute') this.pages[i].style.position = 'absolute';                this.pages[i].style.height = this.height + 'px';            }            if (this.navShow) {                this.nav.style.marginTop = -this.nav.offsetHeight / 2 + 'px';                this.navs[this.index].className = this.current;            }            this.pages[this.index].className += ' ' + this.current;            this.zIndex = parseInt(this.css(this.pages[this.index], 'zIndex') === 'auto' ? 1 : this.css(this.pages[this.index], zIndex)) + 10;            this.pages[this.index].style.display = 'block';        },        bind: function() {            var _this = this;            this.on(this.box, ['touchstart', 'pointerdown', 'mousedown'], function(e) {                _this.touchStart(e);                _this.auto && _this.stop();            });            this.on(this.box, ['touchmove', 'pointermove', 'mousemove'], function(e) {                _this.touchMove(e);                _this.auto && _this.stop();            });            this.on(this.box, ['touchend', 'touchcancel', 'pointerup', 'mouseup'], function(e) {                _this.touchEnd(e);                _this.auto && _this.play();            });        },        touchStart: function(e) {            this.point = e.type.indexOf('down') < 0 ? 'touch' : 'pointer';            if (this.point === 'pointer') {                this.touch.x = e.pageX;                this.touch.y = e.pageY;            }else if (this.point === 'touch') {                this.touch.x = e.touches[0].pageX;                this.touch.y = e.touches[0].pageY;            }            this.touch.disX = 0;            this.touch.disY = 0;            this.touch.fixed = '';            this.start && this.start();        },        touchMove: function(e) {            e.stopPropagation();            e.preventDefault();            if (this.point === '') return;            if (this.touch.fixed === 'left') return;            if (!this.animated) return;            if (this.point === 'pointer') {                this.touch.disX = e.pageX - this.touch.x;                this.touch.disY = e.pageY - this.touch.y;            }else if (this.point === 'touch') {                if (e.touches.length > 1) return;                this.touch.disX = e.touches[0].pageX - this.touch.x;                this.touch.disY = e.touches[0].pageY - this.touch.y;            }            if (this.touch.fixed === '') {                if (Math.abs(this.touch.disY) > Math.abs(this.touch.disX)) {                    this.touch.fixed = 'up';                } else {                    this.touch.fixed = 'left';                }            }            if (this.touch.fixed === 'up') {                if (this.effect === 'scale') {                    this.scale = ((this.height - Math.abs(this.touch.disY)) / this.height).toFixed(3);                    this.scale < this.minScale && (this.scale = this.minScale);                }                if (this.touch.disY > 0) {                    if (this.locked && this.oIndex === 0) return;                    this.dis = -this.height;                    this.index = this.oIndex - 1;                    this.index < 0 && (this.index = this.length - 1);                    if (this.effect === 'scale') this.setOrigin(this.oIndex, 'center bottom');                } else {                    if (this.locked && this.oIndex === this.length - 1) return;                    this.dis = this.height;                    this.index = this.oIndex + 1;                    this.index > this.length - 1 && (this.index = 0);                    if (this.effect === 'scale') this.setOrigin(this.oIndex, 'center top');                }                if (this.nIndex !== undefined && this.nIndex !== this.index && this.nIndex !== this.oIndex) {                    this.pages[this.nIndex].style.display = 'none';                    this.pages[this.nIndex].style.zIndex = '';                    this.pages[this.nIndex].style.webkitTransform = this.pages[this.nIndex].style.transform = '';                }                this.nIndex = this.index;                this.pages[this.oIndex].style.zIndex = this.zIndex;                this.pages[this.index].style.zIndex = this.zIndex + 10;                this.setTransform(this.index, this.dis);                this.pages[this.index].style.display = 'block';                this.setTransform(this.index, this.touch.disY + this.dis);                if (this.effect === 'translate') this.setTransform(this.oIndex, this.touch.disY);                if (this.effect === 'scale') this.setScale(this.oIndex, this.scale);                this.move && this.move();            }        },        touchEnd: function(e) {            this.point = '';            if (this.index === this.oIndex) return;            if (this.touch.fixed === 'up') {                var Y = Math.abs(this.touch.disY);                if ((this.animated && Y > 10) || Y > this.height / 2) {                    this.slide();                } else {                    this.goback();                }                this.end && this.end();            }        },        css: function(o, n) {            return getComputedStyle(o, null)[n];        },        on: function(el, types, handler) {            for (var i = 0, l = types.length; i < l; i++) el.addEventListener(types[i], handler, false);        },        setScale: function(index, v) {            this.setStyle(this.pages[index], 'transform', 'scale(' + v + ')');        },        setOrigin: function(index, dir) {            this.setStyle(this.pages[index], 'transform-origin', dir);        },        setTransform: function(index, v) {            this.setStyle(this.pages[index], 'transform', 'translate3d(0,' + v + 'px,0)');        },        setTransition: function(index, v) {            this.setStyle(this.pages[index], 'transition', 'all ' + v + 'ms');        },        setStyle: function(el, p, v) {            var prefix = ['o', 'moz', 'ms', 'webkit', ''],                i = 0,                l = prefix.length;            for (; i < l; i++) {                (function(i) {                    var s = prefix[i] + '-' + p;                    s = s.replace(/-\D/g, function(match) {                        return match.charAt(1).toUpperCase();                    });                    el.style[s] = v;                }(i));            }        },        slide: function() {            var _this = this;            this.animated = false;            this.setTransition(this.index, this.duration);            this.setTransition(this.oIndex, this.duration);            this.setTransform(this.index, 0);            if (this.effect === 'translate') this.setTransform(this.oIndex, -this.dis);            if (this.effect === 'scale') this.setScale(this.oIndex, this.minScale);            setTimeout(function() {                if (_this.index !== _this.oIndex) _this.update();                _this.animated = true;            }, this.duration);        },        goback: function() {            var _this = this;            this.setTransition(this.index, 100);            this.setTransition(this.oIndex, 100);            this.setTransform(this.index, this.dis);            if (this.effect === 'translate') this.setTransform(this.oIndex, 0);            if (this.effect === 'scale') this.setScale(this.oIndex, 1);            setTimeout(function() {                _this.clear();                _this.pages[_this.index].style.display = 'none';                _this.index = _this.oIndex;            }, 100);        },        update: function() {            if (this.navShow) {                this.navs[this.index].className = this.current;                this.navs[this.oIndex].className = '';            }            this.pages[this.oIndex].style.display = 'none';            this.pages[this.index].className += ' ' + this.current;            this.pages[this.oIndex].className = this.pages[this.oIndex].className.replace(this.current, '').trim();            this.clear();            this.oIndex = this.index;        },        clear: function() {            this.pages[this.index].style.webkitTransition = this.pages[this.index].transition = '';            this.pages[this.oIndex].style.webkitTransition = this.pages[this.oIndex].transition = '';            this.pages[this.index].style.webkitTransform = this.pages[this.index].style.transform = '';            this.pages[this.oIndex].style.webkitTransform = this.pages[this.oIndex].style.transform = '';            this.pages[this.oIndex].style.zIndex = '';            this.pages[this.index].style.zIndex = '';            if (this.effect === 'scale') this.setOrigin(this.oIndex, '');        },        animate: function() {            var _this = this;            this.setTransform(this.index, this.dis);            this.pages[this.index].style.display = 'block';            this.pages[this.oIndex].style.zIndex = this.zIndex;            this.pages[this.index].style.zIndex = this.zIndex + 10;            this.setTransition(this.index, 0);            this.setTransition(this.oIndex, 0);            setTimeout(function() {                _this.slide();            }, 50);        },        up: function() {            this.dis = this.height;            this.index++;            this.index > this.length - 1 && (this.index = 0);            if (this.effect === 'scale') this.setOrigin(this.oIndex, 'center top');            this.animate();        },        down: function() {            this.dis = -this.height;            this.index--;            this.index < 0 && (this.index = this.length - 1);            if (this.effect === 'scale') this.setOrigin(this.oIndex, 'center bottom');            this.animate();        },        play: function() {            var _this = this;            if (this.locked) return;            this.timer = setInterval(function() {                _this.up();            }, this.delay);        },        stop: function() {            this.timer && clearInterval(this.timer);            this.timer = null;        }    };}());查看完整代码

和以前写的 图片切换 有许多共同的地方，整个翻页和图片切换原理都是类似的。

这个支持自动播放，三种翻页效果，限制头尾滑动等。

翻页动画，就是在一个容器内滑动， 在这个容器中 每次只显示一页，每一页都有一些css3动画效果的元素出现。

一个简单的HTML结构如下：

<div id="slidePageBox" class="slide-box">    <section class="slide-page page1">         <!-- 1 -->    </section>    <section class="slide-page page2">        <!-- 2 -->    </section>    <section class="slide-page page3">        <!-- 3 -->    </section>    <section class="slide-page page4">        <!-- 4 -->    </section>    <section class="slide-page page5">        <!-- 5 -->    </section></div>

类名为slide-box的div标签就是容器，类名为slide-page的section标签就是每个要翻的页。

this.box = typeof opts.el === 'string' ? document.querySelector(opts.el) : opts.el;this.pages = this.box.children;this.length = this.pages.length;

这里this.box就是容器，this.pages就是所有要翻的页。

this.height = document.documentElement.clientHeight;this.box.style.height = this.height + 'px';for (var i = 0; i < this.length; i++) {    //..    this.pages[i].style.height = this.height + 'px';}

获取浏览器窗口的高，并设置容器和页的高为这个值。这个翻页是上下滑动，JS就没有获取宽度值了。

容器宽用css设置为width:100%，做个最大宽度限制为max-width:640px，这可根据实际情况设置。

现在切换翻页，当手指在容器滑动时，这里为判断上下滑动，满足滑动一定距离，手指离开容器时，开始翻页。

触摸事件：手指移入，手指移动，手指离开

指针事件：指针按下，指针移动，指针收起

鼠标事件: 鼠标按下，鼠标移动，鼠标收起

//..bind: function() {    var _this = this;    this.on(this.box, ['touchstart', 'pointerdown', 'mousedown'], function(e) {        _this.touchStart(e);         //..    });    this.on(this.box, ['touchmove', 'pointermove', 'mousemove'], function(e) {        _this.touchMove(e);        //..    });    this.on(this.box, ['touchend', 'touchcancel', 'pointerup', 'mouseup'], function(e) {        _this.touchEnd(e);        //..    });},//..

绑定了触摸事件，WP的指针事件，鼠标事件。

//..touchStart: function(e) {    this.point = e.type.indexOf('down') < 0 ? 'touch' : 'pointer';    if (this.point === 'pointer') {        this.touch.x = e.pageX;        this.touch.y = e.pageY;    }else if (this.point === 'touch') {        this.touch.x = e.touches[0].pageX;        this.touch.y = e.touches[0].pageY;    }    //..},//..

获取移入时的初始位置（触摸，指针，鼠标）

//..touchMove: function(e) {    //..    if (this.touch.fixed === 'left') return;    //..    if (this.point === 'pointer') {        this.touch.disX = e.pageX - this.touch.x;        this.touch.disY = e.pageY - this.touch.y;    }else if (this.point === 'touch') {        //..        this.touch.disX = e.touches[0].pageX - this.touch.x;        this.touch.disY = e.touches[0].pageY - this.touch.y;    }    if (this.touch.fixed === '') {        if (Math.abs(this.touch.disY) > Math.abs(this.touch.disX)) {            this.touch.fixed = 'up';        } else {            this.touch.fixed = 'left';        }    }    if (this.touch.fixed === 'up') {        //..    }},//..

移动时（触摸，指针，鼠标）获取移动了多少距离，根据距离判断向左右还是上下移动的，这里翻页只要上下移动。

//..if (this.touch.fixed === 'up') {    if (this.effect === 'scale') {        this.scale = ((this.height - Math.abs(this.touch.disY)) / this.height).toFixed(3);        this.scale < this.minScale && (this.scale = this.minScale);    }    if (this.touch.disY > 0) {        if (this.locked && this.oIndex === 0) return;        this.dis = -this.height;        this.index = this.oIndex - 1;        this.index < 0 && (this.index = this.length - 1);        if (this.effect === 'scale') this.setOrigin(this.oIndex, 'center bottom');    } else {        if (this.locked && this.oIndex === this.length - 1) return;        this.dis = this.height;        this.index = this.oIndex + 1;        this.index > this.length - 1 && (this.index = 0);        if (this.effect === 'scale') this.setOrigin(this.oIndex, 'center top');    }    if (this.nIndex !== undefined && this.nIndex !== this.index && this.nIndex !== this.oIndex) {        this.pages[this.nIndex].style.display = 'none';        this.pages[this.nIndex].style.zIndex = '';        this.pages[this.nIndex].style.webkitTransform = this.pages[this.nIndex].style.transform = '';    }    this.nIndex = this.index;    this.pages[this.oIndex].style.zIndex = this.zIndex;    this.pages[this.index].style.zIndex = this.zIndex + 10;    this.setTransform(this.index, this.dis);    this.pages[this.index].style.display = 'block';    this.setTransform(this.index, this.touch.disY + this.dis);    if (this.effect === 'translate') this.setTransform(this.oIndex, this.touch.disY);    if (this.effect === 'scale') this.setScale(this.oIndex, this.scale);    this.move && this.move();}//..移动中

移动中做了很多事情，是整个程序比较重要的部分。在上下移动时，当前显示的页跟着移动，向上移动时，下一页显示出来一部分，向下移动时，上一页显示一部分。

如果锁定了头尾，第一页向下移动时不能移动，同样最后一页向上移动时不能移动。

opts.effect 动画效果(平移=translate 缩放=scale 重叠=overlap) 默认平移

根据每种翻页效果做初始化设置(如果只需要简单的平移切换可以省去很多代码)。

//..touchEnd: function(e) {    this.point = '';    if (this.index === this.oIndex) return;    if (this.touch.fixed === 'up') {        var Y = Math.abs(this.touch.disY);        if ((this.animated && Y > 10) || Y > this.height / 2) {            this.slide();        } else {            this.goback();        }       //..    }},//..

离开时（触摸，指针，鼠标）根据条件执行滑动切换。

//..slide: function() {    var _this = this;    this.animated = false;    this.setTransition(this.index, this.duration);    this.setTransition(this.oIndex, this.duration);    this.setTransform(this.index, 0);    if (this.effect === 'translate') this.setTransform(this.oIndex, -this.dis);    if (this.effect === 'scale') this.setScale(this.oIndex, this.minScale);    setTimeout(function() {        if (_this.index !== _this.oIndex) _this.update();        _this.animated = true;    }, this.duration);},//..

滑动切换完成时会更新一些设置，比如为当前页增加当前标志类名。每页的css3动画元素也就可以根据这个类名执行动画效果。

//..update: function() {    if (this.navShow) {        this.navs[this.index].className = this.current;        this.navs[this.oIndex].className = '';    }    this.pages[this.oIndex].style.display = 'none';    this.pages[this.index].className += ' ' + this.current;    this.pages[this.oIndex].className = this.pages[this.oIndex].className.replace(this.current, '').trim();    this.clear();    this.oIndex = this.index;},//..

切换了页，执行了每页的动画，整个场景动画就差不多完成了。

最后就是一些简单的了，自动播放什么的。

好了，到此结束。