Javascript之运动框架2

运动框架2与运动框架1的不同之处在于，运动框架2是框架1的升级版，首先完善了传入值，改为move（obj，json，options）,在options里面，可以选择传入或者不传入时间，运动形式，以及函数。其次，增加了多种运动形式,即引入了tween.js,其里面包含了多种运动形式，具体如下：

tweens.js:

在move.js里直接引进用即可；

/**
 * Created by 潘泽慧 on 2016/11/7.
 */
//t  当前时间
//b  初始值
//c  总距离
//d  总时间
//var cur=option.easing(t,b,c,d)
var Tween={Linear:function(t,b,c,d){return c*t/d+b},
    Quad:{easeIn:function(t,b,c,d){return c*(t/=d)*t+b},
        easeOut:function(t,b,c,d){return -c*(t/=d)*(t-2)+b},
        easeInOut:function(t,b,c,d){
            if((t/=d/2)<1){return c/2*t*t+b}return -c/2*((--t)*(t-2)-1)+b}},
    Cubic:{easeIn:function(t,b,c,d){return c*(t/=d)*t*t+b},
        easeOut:function(t,b,c,d){return c*((t=t/d-1)*t*t+1)+b},
        easeInOut:function(t,b,c,d){
            if((t/=d/2)<1){return c/2*t*t*t+b}return c/2*((t-=2)*t*t+2)+b}},
    Quart:{easeIn:function(t,b,c,d){return c*(t/=d)*t*t*t+b},
        easeOut:function(t,b,c,d){return -c*((t=t/d-1)*t*t*t-1)+b},
        easeInOut:function(t,b,c,d){
            if((t/=d/2)<1){return c/2*t*t*t*t+b}return -c/2*((t-=2)*t*t*t-2)+b}},
    Quint:{easeIn:function(t,b,c,d){return c*(t/=d)*t*t*t*t+b},
        easeOut:function(t,b,c,d){return c*((t=t/d-1)*t*t*t*t+1)+b},
        easeInOut:function(t,b,c,d){
            if((t/=d/2)<1){return c/2*t*t*t*t*t+b}return c/2*((t-=2)*t*t*t*t+2)+b}},
    Sine:{easeIn:function(t,b,c,d){return -c*Math.cos(t/d*(Math.PI/2))+c+b},
        easeOut:function(t,b,c,d){return c*Math.sin(t/d*(Math.PI/2))+b},
        easeInOut:function(t,b,c,d){return -c/2*(Math.cos(Math.PI*t/d)-1)+b}},
    Expo:{easeIn:function(t,b,c,d){return(t==0)?b:c*Math.pow(2,10*(t/d-1))+b},
        easeOut:function(t,b,c,d){return(t==d)?b+c:c*(-Math.pow(2,-10*t/d)+1)+b},
        easeInOut:function(t,b,c,d){
            if(t==0){return b}if(t==d){return b+c}if((t/=d/2)<1){return c/2*Math.pow(2,10*(t-1))+b}return c/2*(-Math.pow(2,-10*--t)+2)+b}},
    Circ:{easeIn:function(t,b,c,d){return -c*(Math.sqrt(1-(t/=d)*t)-1)+b},
        easeOut:function(t,b,c,d){return c*Math.sqrt(1-(t=t/d-1)*t)+b},
        easeInOut:function(t,b,c,d){if((t/=d/2)<1){return -c/2*(Math.sqrt(1-t*t)-1)+b}return c/2*(Math.sqrt(1-(t-=2)*t)+1)+b}},
    Elastic:{easeIn:function(t,b,c,d,a,p){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},
        easeOut:function(t,b,c,d,a,p){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)},
        easeInOut: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}},
    Back:{easeIn:function(t,b,c,d,s){if(s==undefined){s=1.70158}return c*(t/=d)*t*((s+1)*t-s)+b},
        easeOut:function(t,b,c,d,s){if(s==undefined){s=1.70158}return c*((t=t/d-1)*t*((s+1)*t+s)+1)+b},
        easeInOut:function(t,b,c,d,s){if(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}},
    Bounce:{easeIn:function(t,b,c,d){return c-Tween.Bounce.easeOut(d-t,0,c,d)+b},
        easeOut: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}else{return c*(7.5625*(t-=(2.625/2.75))*t+0.984375)+b}}}},
        easeInOut:function(t,b,c,d){if(t<d/2){return Tween.Bounce.easeIn(t*2,0,c,d)*0.5+b}else{return Tween.Bounce.easeOut(t*2-d,0,c,d)*0.5+c*0.5+b}}}};

move.js:

　　　　　　不同之处在于红色加粗斜体部分。

var Tween={Linear:function(t,b,c,d){return c*t/d+b},Quad:{easeIn:function(t,b,c,d){return c*(t/=d)*t+b},easeOut:function(t,b,c,d){return -c*(t/=d)*(t-2)+b},easeInOut:function(t,b,c,d){if((t/=d/2)<1){return c/2*t*t+b}return -c/2*((--t)*(t-2)-1)+b}},Cubic:{easeIn:function(t,b,c,d){return c*(t/=d)*t*t+b},easeOut:function(t,b,c,d){return c*((t=t/d-1)*t*t+1)+b},easeInOut:function(t,b,c,d){if((t/=d/2)<1){return c/2*t*t*t+b}return c/2*((t-=2)*t*t+2)+b}},Quart:{easeIn:function(t,b,c,d){return c*(t/=d)*t*t*t+b},easeOut:function(t,b,c,d){return -c*((t=t/d-1)*t*t*t-1)+b},easeInOut:function(t,b,c,d){if((t/=d/2)<1){return c/2*t*t*t*t+b}return -c/2*((t-=2)*t*t*t-2)+b}},Quint:{easeIn:function(t,b,c,d){return c*(t/=d)*t*t*t*t+b},easeOut:function(t,b,c,d){return c*((t=t/d-1)*t*t*t*t+1)+b},easeInOut:function(t,b,c,d){if((t/=d/2)<1){return c/2*t*t*t*t*t+b}return c/2*((t-=2)*t*t*t*t+2)+b}},Sine:{easeIn:function(t,b,c,d){return -c*Math.cos(t/d*(Math.PI/2))+c+b},easeOut:function(t,b,c,d){return c*Math.sin(t/d*(Math.PI/2))+b},easeInOut:function(t,b,c,d){return -c/2*(Math.cos(Math.PI*t/d)-1)+b}},Expo:{easeIn:function(t,b,c,d){return(t==0)?b:c*Math.pow(2,10*(t/d-1))+b},easeOut:function(t,b,c,d){return(t==d)?b+c:c*(-Math.pow(2,-10*t/d)+1)+b},easeInOut:function(t,b,c,d){if(t==0){return b}if(t==d){return b+c}if((t/=d/2)<1){return c/2*Math.pow(2,10*(t-1))+b}return c/2*(-Math.pow(2,-10*--t)+2)+b}},Circ:{easeIn:function(t,b,c,d){return -c*(Math.sqrt(1-(t/=d)*t)-1)+b},easeOut:function(t,b,c,d){return c*Math.sqrt(1-(t=t/d-1)*t)+b},easeInOut:function(t,b,c,d){if((t/=d/2)<1){return -c/2*(Math.sqrt(1-t*t)-1)+b}return c/2*(Math.sqrt(1-(t-=2)*t)+1)+b}},Elastic:{easeIn:function(t,b,c,d,a,p){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},easeOut:function(t,b,c,d,a,p){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)},easeInOut: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}},Back:{easeIn:function(t,b,c,d,s){if(s==undefined){s=1.70158}return c*(t/=d)*t*((s+1)*t-s)+b},easeOut:function(t,b,c,d,s){if(s==undefined){s=1.70158}return c*((t=t/d-1)*t*((s+1)*t+s)+1)+b},easeInOut:function(t,b,c,d,s){if(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}},Bounce:{easeIn:function(t,b,c,d){return c-Tween.Bounce.easeOut(d-t,0,c,d)+b},easeOut: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}else{return c*(7.5625*(t-=(2.625/2.75))*t+0.984375)+b}}}},easeInOut:function(t,b,c,d){if(t<d/2){return Tween.Bounce.easeIn(t*2,0,c,d)*0.5+b}else{return Tween.Bounce.easeOut(t*2-d,0,c,d)*0.5+c*0.5+b}}}};

function getStyle(obj, name) {
    if (obj.currentStyle) {
        return obj.currentStyle[name];
    } else {
        return getComputedStyle(obj, false)[name];
    }
}

function move(obj, json, options) {
    clearInterval(obj.timer);
    options = options || {};
    options.time = options.time || 500;
    options.easeing = options.easeing || Tween.Expo.easeOut;
    var dis = {};
    var start = {};
    for (var name in json) {
        start[name] = parseFloat(getStyle(obj, name));
        dis[name] = json[name] - start[name];
    }
    var count = Math.floor(options.time / 30);
    var n = 0;
    obj.timer = setInterval(function () {
        n++;
        for (var name in json) {
            var cur = options.easeing(n/count*options.time,start[name],dis[name],options.time);
            if (name == 'opacity') {
                obj.style.opacity = cur;
                obj.style.filter = 'alpha(opacity:' + cur * 100 + ')';
            } else {
                obj.style[name] = cur + 'px';
            }
        }
        if (n == count) {
            clearInterval(obj.timer);
            options.fn && options.fn();
        }
    }, 30);
}
html:

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>无标题文档</title>
    <style>
        #box {
            width: 100px;
            height: 100px;
            background:red;
            position: absolute;
            left: 0;
            top: 0;
        }
    </style>
    <script src="move.js"></script>
    <script>
        window.onload = function(){
            var oBox = document.getElementById('box');
            //var b = Tween.Back.easeIn;
            //var b = Tween.Bounce.easeOut;
            //var b = Tween.Circ.easeInOut;
            //var b = Tween.Elastic.easeIn;
            //var b = Tween.Expo.easeOut;
            //var b = Tween.Quad.easeIn;
            //var b = Tween.Quart.easeOut;
            //var b = Tween.Quint.easeIn;
            //var b = Tween.Sine.easeInOut;
            var b = Tween.Back.prototype;
            oBox.onclick = function(){
                move(this,{left:700},{easeing:b});
            }
        }
    </script>
</head>

<body>
<div id="box"></div>
</body>
</html>

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