JavaScript运动框架之速度时间版本

原文链接 http://blog.poetries.top/2017/01/12/js-animate

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一、JavaScript运动框架之速度版

1.1 运动框架的实现思路

运动，其实就是在一段时间内改变 left 、 right 、 width 、 height 、 opactiy 的值，到达目的地之后停止

位移 top,left
折叠 width,height
淡入淡出 opacity
时间有关系
- setInterval
- setTimeout

用javascript直接获取行间样式很容易，但如果要获取非行间样式那我们只能借助函数了。我这里编写了一个名为getStyle的函数，专门处理取非行间的样式

function getStyle(obj,attr){
    return getComputedStyle(obj)[attr]?getComputedStyle(obj)[attr]:obj.currentStyle[attr];
}

1.2 一些案例演示

1.2.1 运动之速

#box {
    width: 100px;
    height: 100px;
    background: red;
     position: relative;
    left: 0;
}

var box = document.getElementById("box");
var speed = 0; //步长
var target = 600;
var timer = null;
timer = setInterval(function(){
    var curr = parseInt(getStyle(box,"left")); //去除getStyle(box,"left")的单位
    if(curr == target){
        clearInterval(timer);
        speed = 0;
        alert("运动结束");
    }else{
        speed +=10;
        box.style.left = speed + "px";
    }
    

},1000/30);

//监控left的值的变化 怎么样拿到left的值
//alert(getComputedStyle(box)["width"]);
//alert(box.currentStyle["left"]);
// currentStyle --IE 
// getComputedStyle -- 非IE

function getStyle(obj,attr){
    return getComputedStyle(obj)[attr]?getComputedStyle(obj)[attr]:obj.currentStyle[attr];
}

在线演示

1.2.2 运动速度之封装1

#ball {
    width: 100px;
    height: 100px;
    background: blue;
}

var ball = document.getElementById("ball");

ball.onmouseover = function(){
    //同时变换 用的最多
    //move(this,"width",500,10);
    //move(this,"height",500,10);
    move(ball,{"width":400,"height":300},10);
}
ball.onmouseout = function(){
    //move(this,"width",100,-10);
    //move(this,"height",100,-10);
    move(ball,{"width":100,"height":100},-10);
}
function move(obj,json,speed){
    clearInterval(obj.timer);
    var mark = true;
    obj.timer = setInterval(function(){
        for(var attr in json){
            var curr = parseInt(getStyle(obj,attr));
            var target = json[attr];
            if(curr != target){
                obj.style[attr] = curr+speed+"px";
                mark = false;
          }
        }
        if(mark){
            clearInterval(obj.timer);
        }
    },1000/30);
}


function getStyle(obj,attr){
    return getComputedStyle(obj)[attr]?getComputedStyle(obj)[attr]:obj.currentStyle[attr];
}

需要注意的地方
- 当需要两个动画的时候，会执行后面一个，解决办法如下，回调函数
- 当需要两个以上的时候，需要考虑是否可写一行代码变换多个属性
- 变换不一致的时候，定时器被提前清除

在线演示

1.2.3 运动速度之封装2--增加opacity

#ball {
  position: relative;
  left: 0;
  top: 0;
  width: 100px;
  height: 100px;
  background: blue;
  opacity: 1;
}

var ball = document.getElementById("ball");
ball.onmouseover = function(){
    move(ball,{"width":300,"height":300,"opacity":0.3});
}
//          ball.onmouseout = function(){
//              move(ball,{"width":100,"height":100},-10);
//          }
function move(obj,json){
    clearInterval(obj.timer);
    var mark = true;
    obj.timer = setInterval(function(){
        for(var attr in json){
            var curr = null;
            var target = json[attr];
            var speed = null;
            if(attr == "opacity"){
                curr = getStyle(obj,attr)*100;
                speed = (target*100-curr)*0.15;
            }else {
                curr = parseInt(getStyle(obj,attr));
                speed = (target - curr)*0.15;
            }
            speed = speed>0 ? Math.ceil(speed):Math.floor(speed);
            if(curr != target){
                if(attr == "opacity"){
                    obj.style[attr] = (curr+speed)/100;
                }else {
                    obj.style[attr] = curr+speed+"px";
                }
                
                mark = false;
          }
        }
        if(mark){
            clearInterval(obj.timer);
        }
    },1000/30);
}


function getStyle(obj,attr){
    return getComputedStyle(obj)[attr]?getComputedStyle(obj)[attr]:obj.currentStyle[attr];
}

在线演示

需要注意的地方
- 当需要两个动画的时候，会执行后面一个，解决办法如下，回调函数
- 当需要两个以上的时候，需要考虑是否可写一行代码变换多个属性
- 变换不一致的时候，定时器被提前清除
- 速度speed不要写死

1.3 运动框架之应用

1.3.1 分享按钮



  分享到

var box1 = document.getElementById("box1");
var ball = document.getElementById("ball");

box1.onmouseover = function(){
  move(this,"left",0,10);
}
box1.onmouseout = function(){
  move(this,"left",-100,-10);
}
//问题一：当需要两个动画的时候，会执行后面一个，解决办法如下，回调函数
ball.onmouseover = function(){
  //同时变换 用的最多
  //move(this,"width",500,10);
  //move(this,"height",500,10);
  //列队在执行
  move(ball,"width",500,10,function(){
    move(ball,"height",500,10);
  });
}
ball.onmouseout = function(){
  //move(this,"width",100,-10);
  //move(this,"height",100,-10);
  move(ball,"width",100,-10,function(){
    move(ball,"height",100,-10);
  });
}
var timer = null;
function move(obj,attr,target,speed,callback){
  clearInterval(timer); //obj.timer缓存到各自的obj下
  timer = setInterval(function(){
    var curr = parseInt(getStyle(obj,attr));
    if(curr == target){
      clearInterval(timer);
      callback && callback();
    }else {
      obj.style[attr] = curr+speed+"px";
    }
  },1000/30);
}




function getStyle(obj,attr){
  return getComputedStyle(obj)[attr]?getComputedStyle(obj)[attr]:obj.currentStyle[attr];
}

在线演示

1.3.2运动框架之轮播图应用

焦点轮播--基本版本--在线演示
焦点轮播--淡入淡出--在线演示
焦点轮播--左右--在线演示
焦点轮播--上下--在线演示

1.3.2.1 焦点轮播--左右-无缝-速度版实现


    
        ![](http://upload-images.jianshu.io/upload_images/1480597-c72819402fb928e8.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
        ![](http://upload-images.jianshu.io/upload_images/1480597-6830ca74fe1e6fcd.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
        ![](http://upload-images.jianshu.io/upload_images/1480597-5d38376e63ffd0b0.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
        ![](http://upload-images.jianshu.io/upload_images/1480597-2aa932ffbba4091e.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
        ![](http://upload-images.jianshu.io/upload_images/1480597-c72819402fb928e8.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
    
    
        1
        2
        3
        4

*{
  padding: 0;
  margin: 0;
}
body{
  font-size: 14px;
  font-family: "微软雅黑";
}
ul,li{
  list-style: none;
}
#box {
  position: relative;
  width: 970px;
  height: 350px;
  margin: 30px auto;
  overflow: hidden;
}
#imgBox {
  width:1000%;/*自动计算百分比*/
  position: absolute;
  left: 0;
}
#imgBox li{
  width: 970px;
  height: 350px;
  float: left;
}

#imgBox li img {
  width: 970px;
  height: 350px;
}
#btn {
  width: 120px;
  position: absolute;
  right: 10px;
  bottom: 10px;
}
#btn li {
  width: 20px;
  height: 20px;
  line-height: 20px;
  border-radius: 50%;
  text-align: center;
  cursor: pointer;
  background: #fff;
  margin: 0 2px;
  float: left;
}
#btn li.active {
  background: #F17A5C;
  color: #fff;
}


//速度版本
(function(win){
    function move(obj,json,callback){
        clearInterval(obj.timer);
        obj.timer = setInterval(function(){
            var mark = true;
            for(var attr in json){
                var cur = null;
                if(attr == "opacity"){
                    cur = getStyle(obj,attr)*100;
                }else{
                    //如果没写 默认填充成0
                    cur = parseInt(getStyle(obj,attr))||0;
                }
                var target = json[attr];
                var speed = (target - cur)*0.2;
                speed = speed>0?Math.ceil(speed):Math.floor(speed);
                if(cur != target){
                    if(attr == "opacity"){
                        //IE opacity兼容问题
                        obj.style.filter = "alpha(opacity="+(cur+speed)+")";
                        obj.style[attr] = (cur + speed)/100;
                    }else{
                        obj.style[attr] = cur + speed + "px";
                    }
                    mark = false;

                };
            }
            if(mark){
                clearInterval(obj.timer);
                callback && callback.call(obj);
            }
        },1000/30);
    }
    win.animateSpeed = move;
})(window);

    
function getStyle(obj,attr){
    return getComputedStyle(obj)[attr]?getComputedStyle(obj)[attr]:obj.currentStyle[attr];
}

function getId(id){
    return document.getElementById(id);
}

二、JavaScript运动框架之时间版

2.1 关于运动

速度的运动通过速度来控制元素的位移 / 折叠 / 淡入淡出
时间的运动通过时间来控制元素的位移 / 折叠 / 淡入淡出(jQuery)
时间的运动基于一些数学公式匀速运动在路程的每一个点速度都一样

2.2 一些案例演示

运动框架之时间版本-1
运动框架之时间版本-2
运动框架之时间版本-3
运动框架之时间版本-4

2.3 运动框架之时间版本-借助animate一些函数实现--综合完整版

#box1,#box2,#box3,#box4,#box5 {
    position: relative;
    width: 100px;
    height: 100px;
    line-height: 100px;
    text-align: center;
    background: red;
    color: #fff;
    font-size: 12px;
    opacity: 0.5;
    filter:alpha(opcity=20);/**兼容IE*/
    margin: 10px;
    
}


/*t b c d
t current time   :nTime-sTime
b begining time  :curr
c chang in value :变化量end-curr
d duration       :持续时间 time */
/**
* 
* @param {Object} obj 元素对象
* @param {Object} json 多个属性
* @param {Object} time 变化时间
* @param {Object} prop 运动函数
* @param {Object} callback 回调函数
*/
//时间版本
(function(win){ 
function move(obj,json,time,prop,callback){
//一般定时器结束后最好清除
clearInterval(obj.timer);
var curr = {};
var end = {};
//通过for in 在上车前把所有东西装到包里
for(var attr in json){
    if(attr == "opacity"){//opacity特殊东西特殊对待
        curr[attr] = getStyle(obj,attr)*100;//化为整数好计算
    }else{
        curr[attr] = parseInt(getStyle(obj,attr))||0;
    }
    end[attr] = json[attr];
    
}


//如果没写默认值 默认就是0 不然在IE出问题
//var curr = parseInt(getStyle(obj,attr))||0;
//var end = target;
var sTime = new Date();//开始时间T0
//开始变换了
obj.timer = setInterval(function(){
    var nTime = new Date();//当前时间Tt
    var t = nTime -sTime;
    var d = time;
    //St = (Tt-T0)/Time*(S-S0)+S0
    //(nTime-sTime)/time 比例最多为1
    /*var prop = (nTime-sTime)/time; */
    if(t >=d){
        t = d;
        clearInterval(obj.timer);
        callback && callback.call(obj);
    }
    for(var attr in json){
        var b = curr[attr];
        var c = end[attr] - b;
        if(attr == "opacity"){
            //var s = prop*(end[attr]-curr[attr])+curr[attr];
            var s = Tween[prop](t,b,c,d);
            obj.style[attr] = s/100;
            obj.style.filter = "alpha(opacity="+s+")";
        }else{
            //var s = prop*(end[attr]-curr[attr])+curr[attr];
            var s = Tween[prop](t,b,c,d);
            obj.style[attr] = s+"px";
        }

    }

    
},13);
var Tween = {
    linear: function (t, b, c, d){  //匀速
        return c*t/d + b;   //  t/d = prop;
    },
    easeIn: function(t, b, c, d){  //加速曲线
        return c*(t/=d)*t + b;
    },
    easeOut: function(t, b, c, d){  //减速曲线
        return -c *(t/=d)*(t-2) + b;
    },
    easeBoth: function(t, b, c, d){  //加速减速曲线
        if ((t/=d/2) < 1) {
            return c/2*t*t + b;
        }
        return -c/2 * ((--t)*(t-2) - 1) + b;
    },
    easeInStrong: function(t, b, c, d){  //加加速曲线
        return c*(t/=d)*t*t*t + b;
    },
    easeOutStrong: function(t, b, c, d){  //减减速曲线
        return -c * ((t=t/d-1)*t*t*t - 1) + b;
    },
    easeBothStrong: function(t, b, c, d){  //加加速减减速曲线
        if ((t/=d/2) < 1) {
            return c/2*t*t*t*t + b;
        }
        return -c/2 * ((t-=2)*t*t*t - 2) + b;
    },
    elasticIn: function(t, b, c, d, a, p){  //正弦衰减曲线（弹动渐入）
        if (t === 0) {
            return b;
        }
        if ( (t /= d) == 1 ) {
            return b+c;
        }
        if (!p) {
            p=d*0.3;
        }
        if (!a || a < Math.abs(c)) {
            a = c;
            var s = p/4;
        } else {
            var s = p/(2*Math.PI) * Math.asin (c/a);
        }
        return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
    },
    elasticOut: function(t, b, c, d, a, p){    //正弦增强曲线（弹动渐出）
        if (t === 0) {
            return b;
        }
        if ( (t /= d) == 1 ) {
            return b+c;
        }
        if (!p) {
            p=d*0.3;
        }
        if (!a || a < Math.abs(c)) {
            a = c;
            var s = p / 4;
        } else {
            var s = p/(2*Math.PI) * Math.asin (c/a);
        }
        return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
    },
    elasticBoth: function(t, b, c, d, a, p){
        if (t === 0) {
            return b;
        }
        if ( (t /= d/2) == 2 ) {
            return b+c;
        }
        if (!p) {
            p = d*(0.3*1.5);
        }
        if ( !a || a < Math.abs(c) ) {
            a = c;
            var s = p/4;
        }
        else {
            var s = p/(2*Math.PI) * Math.asin (c/a);
        }
        if (t < 1) {
            return - 0.5*(a*Math.pow(2,10*(t-=1)) *
                    Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
        }
        return a*Math.pow(2,-10*(t-=1)) *
                Math.sin( (t*d-s)*(2*Math.PI)/p )*0.5 + c + b;
    },
    backIn: function(t, b, c, d, s){     //回退加速（回退渐入）
        if (typeof s == 'undefined') {
           s = 1.70158;
        }
        return c*(t/=d)*t*((s+1)*t - s) + b;
    },
    backOut: function(t, b, c, d, s){
        if (typeof s == 'undefined') {
            s = 3.70158;  //回缩的距离
        }
        return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
    },
    backBoth: function(t, b, c, d, s){
        if (typeof s == 'undefined') {
            s = 1.70158;
        }
        if ((t /= d/2 ) < 1) {
            return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
        }
        return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
    },
    bounceIn: function(t, b, c, d){    //弹球减振（弹球渐出）
        return c - Tween['bounceOut'](d-t, 0, c, d) + b;
    },
    bounceOut: function(t, b, c, d){
        if ((t/=d) < (1/2.75)) {
            return c*(7.5625*t*t) + b;
        } else if (t < (2/2.75)) {
            return c*(7.5625*(t-=(1.5/2.75))*t + 0.75) + b;
        } else if (t < (2.5/2.75)) {
            return c*(7.5625*(t-=(2.25/2.75))*t + 0.9375) + b;
        }
        return c*(7.5625*(t-=(2.625/2.75))*t + 0.984375) + b;
    },
    bounceBoth: function(t, b, c, d){
        if (t < d/2) {
            return Tween['bounceIn'](t*2, 0, c, d) * 0.5 + b;
        }
        return Tween['bounceOut'](t*2-d, 0, c, d) * 0.5 + c*0.5 + b;
        }
};
}
win.animateTime = move; 
})(window);

在线演示

三、运动框架之时间速度版完整封装

/*t b c d
t current time   :nTime-sTime
b begining time  :curr
c chang in value :变化量end-curr
d duration       :持续时间 time */
/**
 * 
 * @param {Object} obj 元素对象
 * @param {Object} json 多个属性
 * @param {Object} time 变化时间
 * @param {Object} prop 运动函数
 * @param {Object} callback 回调函数
 */
//时间版本
(function(win){ 
    function move(obj,json,time,prop,callback){
    //一般定时器结束后最好清除
    clearInterval(obj.timer);
    var curr = {};
    var end = {};
    //通过for in 在上车前把所有东西装到包里
    for(var attr in json){
        if(attr == "opacity"){//opacity特殊东西特殊对待
            curr[attr] = getStyle(obj,attr)*100;//化为整数好计算
        }else{
            curr[attr] = parseInt(getStyle(obj,attr))||0;
        }
        end[attr] = json[attr];
        
    }
    
    
    //如果没写默认值 默认就是0 不然在IE出问题
    //var curr = parseInt(getStyle(obj,attr))||0;
    //var end = target;
    var sTime = new Date();//开始时间T0
    //开始变换了
    obj.timer = setInterval(function(){
        var nTime = new Date();//当前时间Tt
        var t = nTime -sTime;
        var d = time;
        //St = (Tt-T0)/Time*(S-S0)+S0
        //(nTime-sTime)/time 比例最多为1
        /*var prop = (nTime-sTime)/time; */
        if(t >=d){
            t = d;
            clearInterval(obj.timer);
            callback && callback.call(obj);
        }
        for(var attr in json){
            var b = curr[attr];
            var c = end[attr] - b;
            if(attr == "opacity"){
                //var s = prop*(end[attr]-curr[attr])+curr[attr];
                var s = Tween[prop](t,b,c,d);
                obj.style[attr] = s/100;
                obj.style.filter = "alpha(opacity="+s+")";
            }else{
                //var s = prop*(end[attr]-curr[attr])+curr[attr];
                var s = Tween[prop](t,b,c,d);
                obj.style[attr] = s+"px";
            }

        }

        
    },13);
    var Tween = {
        linear: function (t, b, c, d){  //匀速
            return c*t/d + b;   //  t/d = prop;
        },
        easeIn: function(t, b, c, d){  //加速曲线
            return c*(t/=d)*t + b;
        },
        easeOut: function(t, b, c, d){  //减速曲线
            return -c *(t/=d)*(t-2) + b;
        },
        easeBoth: function(t, b, c, d){  //加速减速曲线
            if ((t/=d/2) < 1) {
                return c/2*t*t + b;
            }
            return -c/2 * ((--t)*(t-2) - 1) + b;
        },
        easeInStrong: function(t, b, c, d){  //加加速曲线
            return c*(t/=d)*t*t*t + b;
        },
        easeOutStrong: function(t, b, c, d){  //减减速曲线
            return -c * ((t=t/d-1)*t*t*t - 1) + b;
        },
        easeBothStrong: function(t, b, c, d){  //加加速减减速曲线
            if ((t/=d/2) < 1) {
                return c/2*t*t*t*t + b;
            }
            return -c/2 * ((t-=2)*t*t*t - 2) + b;
        },
        elasticIn: function(t, b, c, d, a, p){  //正弦衰减曲线（弹动渐入）
            if (t === 0) {
                return b;
            }
            if ( (t /= d) == 1 ) {
                return b+c;
            }
            if (!p) {
                p=d*0.3;
            }
            if (!a || a < Math.abs(c)) {
                a = c;
                var s = p/4;
            } else {
                var s = p/(2*Math.PI) * Math.asin (c/a);
            }
            return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
        },
        elasticOut: function(t, b, c, d, a, p){    //正弦增强曲线（弹动渐出）
            if (t === 0) {
                return b;
            }
            if ( (t /= d) == 1 ) {
                return b+c;
            }
            if (!p) {
                p=d*0.3;
            }
            if (!a || a < Math.abs(c)) {
                a = c;
                var s = p / 4;
            } else {
                var s = p/(2*Math.PI) * Math.asin (c/a);
            }
            return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
        },
        elasticBoth: function(t, b, c, d, a, p){
            if (t === 0) {
                return b;
            }
            if ( (t /= d/2) == 2 ) {
                return b+c;
            }
            if (!p) {
                p = d*(0.3*1.5);
            }
            if ( !a || a < Math.abs(c) ) {
                a = c;
                var s = p/4;
            }
            else {
                var s = p/(2*Math.PI) * Math.asin (c/a);
            }
            if (t < 1) {
                return - 0.5*(a*Math.pow(2,10*(t-=1)) *
                        Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
            }
            return a*Math.pow(2,-10*(t-=1)) *
                    Math.sin( (t*d-s)*(2*Math.PI)/p )*0.5 + c + b;
        },
        backIn: function(t, b, c, d, s){     //回退加速（回退渐入）
            if (typeof s == 'undefined') {
               s = 1.70158;
            }
            return c*(t/=d)*t*((s+1)*t - s) + b;
        },
        backOut: function(t, b, c, d, s){
            if (typeof s == 'undefined') {
                s = 3.70158;  //回缩的距离
            }
            return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
        },
        backBoth: function(t, b, c, d, s){
            if (typeof s == 'undefined') {
                s = 1.70158;
            }
            if ((t /= d/2 ) < 1) {
                return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
            }
            return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
        },
        bounceIn: function(t, b, c, d){    //弹球减振（弹球渐出）
            return c - Tween['bounceOut'](d-t, 0, c, d) + b;
        },
        bounceOut: function(t, b, c, d){
            if ((t/=d) < (1/2.75)) {
                return c*(7.5625*t*t) + b;
            } else if (t < (2/2.75)) {
                return c*(7.5625*(t-=(1.5/2.75))*t + 0.75) + b;
            } else if (t < (2.5/2.75)) {
                return c*(7.5625*(t-=(2.25/2.75))*t + 0.9375) + b;
            }
            return c*(7.5625*(t-=(2.625/2.75))*t + 0.984375) + b;
        },
        bounceBoth: function(t, b, c, d){
            if (t < d/2) {
                return Tween['bounceIn'](t*2, 0, c, d) * 0.5 + b;
            }
            return Tween['bounceOut'](t*2-d, 0, c, d) * 0.5 + c*0.5 + b;
            }
    };
 }
    win.animateTime = move; 
 })(window);


//速度版本
(function(win){
    function move(obj,json,callback){
        clearInterval(obj.timer);
        obj.timer = setInterval(function(){
            var mark = true;
            for(var attr in json){
                var cur = null;
                if(attr == "opacity"){
                    cur = getStyle(obj,attr)*100;
                }else{
                    //如果没写 默认填充成0
                    cur = parseInt(getStyle(obj,attr))||0;
                }
                var target = json[attr];
                var speed = (target - cur)*0.2;
                speed = speed>0?Math.ceil(speed):Math.floor(speed);
                if(cur != target){
                    if(attr == "opacity"){
                        //IE opacity兼容问题
                        obj.style.filter = "alpha(opacity="+(cur+speed)+")";
                        obj.style[attr] = (cur + speed)/100;
                    }else{
                        obj.style[attr] = cur + speed + "px";
                    }
                    mark = false;

                };
            }
            if(mark){
                clearInterval(obj.timer);
                callback && callback.call(obj);
            }
        },1000/30);
    }
    win.animateSpeed = move;
})(window);

    
function getStyle(obj,attr){
    return getComputedStyle(obj)[attr]?getComputedStyle(obj)[attr]:obj.currentStyle[attr];
}

function getId(id){
    return document.getElementById(id);
}

更多使用记录，详情 https://github.com/poetries/Animate

JavaScript运动框架之速度时间版本

一、JavaScript运动框架之速度版

1.1 运动框架的实现思路

1.2 一些案例演示

1.2.1 运动之速

1.2.2 运动速度之封装1

1.2.3 运动速度之封装2--增加opacity

1.3 运动框架之应用

1.3.1 分享按钮

1.3.2运动框架之轮播图应用

1.3.2.1 焦点轮播--左右-无缝-速度版实现

二、JavaScript运动框架之时间版

2.1 关于运动

2.2 一些案例演示

2.3 运动框架之时间版本-借助animate一些函数实现--综合完整版

三、运动框架之时间速度版完整封装

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