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February 24, 2017 18:44
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Drag and drop bouncing ball in RxJs
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| (function(Observable, eleId, dom) { | |
| var ball = dom.getElementById(eleId), | |
| mouseOverBall = Observable.fromEvent(ball, 'mousedown'), | |
| mouseUp = Observable.fromEvent(dom, "mouseup"), | |
| dragBall = Observable.fromEvent(dom, 'mousemove'), | |
| resize = Observable.fromEvent(window, 'resize'), | |
| stylesheet = dom.styleSheets[0], | |
| baseY = ((css) => { | |
| try { | |
| return stylesheet.cssRules[0][1].style.transform.split(',')[1]; | |
| } catch (err) { | |
| return '660px'; | |
| } | |
| })(stylesheet), | |
| getBallPos = () => { | |
| var pos = ball.getBoundingClientRect(); | |
| return { | |
| x: pos.left, | |
| y: pos.top | |
| }; | |
| }, | |
| stopDrag = mouseUp.doAction(() => { | |
| var ballPos = getBallPos(); | |
| changeKeyframeRule(ballPos.x, ballPos.y); | |
| ball.classList.remove('selected'); | |
| ball.classList.add('bounce'); | |
| }), | |
| getBaseY = function() { | |
| return window.innerHeight - ball.getBoundingClientRect().height; | |
| }, | |
| changeKeyframeRule = (x, y) => { | |
| var newRule = [ | |
| '@keyframes bounce { ' + | |
| 'from { transform: translate3d(' + x + 'px, ' + y + ', 0); } ' + | |
| 'to { transform: translate3d(' + x + 'px, ' + getBaseY() + 'px, 0); } ' + | |
| '}' | |
| ].join(); | |
| stylesheet.deleteRule(0); | |
| stylesheet.insertRule(newRule, 0); | |
| }, | |
| changeBallPosition = (x, y) => { | |
| ball.style.transform = 'translate3d(' + x + 'px, ' + y + 'px, 0)'; | |
| }, | |
| getRightPos = (mousePos) => { | |
| var ballPos = getBallPos(); | |
| var deltaX = mousePos.pageX - ballPos.x; | |
| var deltaY = mousePos.pageY - ballPos.y; | |
| return (x, y) => { | |
| return { | |
| x: x - deltaX, | |
| y: y - deltaY | |
| }; | |
| }; | |
| }; | |
| var mouseDrags = | |
| mouseOverBall | |
| .concatMap(function(mousePos) { | |
| var fixPos = getRightPos(mousePos); | |
| return dragBall.takeUntil(stopDrag).map((ev) => { | |
| ball.classList.add('selected'); | |
| return fixPos(ev.pageX, ev.pageY); | |
| }); | |
| }); | |
| mouseDrags.forEach((pos) => { | |
| ball.classList.remove('bounce'); | |
| changeBallPosition(pos.x, pos.y); | |
| }); | |
| resize.forEach(function(ev) { | |
| var ballPos = getBallPos(); | |
| changeKeyframeRule( ballPos.x, ballPos.y ); | |
| }); | |
| changeKeyframeRule(0, 0); | |
| }(Rx.Observable, 'ball', document)); |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Bouncy Ball</title> | |
| <link href="style.css" rel="stylesheet" type="text/css" /> | |
| </head> | |
| <body> | |
| <div id="ball" class="bounce"></div> | |
| <script src="rx.lite.min.js"></script> | |
| <script src="controls.js"></script> | |
| </body> | |
| </html> |
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| /* Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.*/ | |
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this.publish().refCount()},Yb.publishLast=function(a){return a&&ua(a)?this.multicast(function(){return new me},a):this.multicast(new me)},Yb.publishValue=function(a,b){return 2===arguments.length?this.multicast(function(){return new oe(b)},a):this.multicast(new oe(a))},Yb.shareValue=function(a){return this.publishValue(a).refCount()},Yb.replay=function(a,b,c,d){return a&&ua(a)?this.multicast(function(){return new pe(b,c,d)},a):this.multicast(new pe(b,c,d))},Yb.shareReplay=function(a,b,c){return this.replay(null,a,b,c).refCount()};var Td=function(a){function b(b){this.source=b,this._count=0,this._connectableSubscription=null,a.call(this)}function c(a,b){this._p=a,this._s=b,this.isDisposed=!1}return tb(b,a),b.prototype.subscribeCore=function(a){var b=this.source.subscribe(a);return 1===++this._count&&(this._connectableSubscription=this.source.connect()),new c(this,b)},c.prototype.dispose=function(){this.isDisposed||(this.isDisposed=!0,this._s.dispose(),0===--this._p._count&&this._p._connectableSubscription.dispose())},b}(kc),Ud=ma.ConnectableObservable=function(a){function b(b,c){this.source=b,this._connection=null,this._source=b.asObservable(),this._subject=c,a.call(this)}function c(a,b){this._p=a,this._s=b}return tb(b,a),c.prototype.dispose=function(){this._s&&(this._s.dispose(),this._s=null,this._p._connection=null)},b.prototype.connect=function(){if(!this._connection){if(this._subject.isStopped)return zb;var a=this._source.subscribe(this._subject);this._connection=new c(this,a)}return this._connection},b.prototype._subscribe=function(a){return this._subject.subscribe(a)},b.prototype.refCount=function(){return new Td(this)},b}(ic),Vd=function(a){function b(b,c){this._dt=b,this._s=c,a.call(this)}function c(a,b){b.onNext(0),b.onCompleted()}return tb(b,a),b.prototype.subscribeCore=function(a){return this._s.scheduleFuture(a,this._dt,c)},b}(kc),Wd=ic.interval=function(a,b){return W(a,a,Kb(b)?b:Vb)};ic.timer=function(b,c,d){var e;return Kb(d)||(d=Vb),null!=c&&"number"==typeof c?e=c:Kb(c)&&(d=c),(b instanceof Date||"number"==typeof b)&&e===a?U(b,d):b instanceof Date&&e!==a?V(b,c,d):W(b,e,d)};Yb.delay=function(){var a=arguments[0];if("number"==typeof a||a instanceof Date){var b=a,c=arguments[1];return Kb(c)||(c=Vb),b instanceof Date?Y(this,b,c):X(this,b,c)}if(ic.isObservable(a)||ua(a))return Z(this,a,arguments[1]);throw new Error("Invalid arguments")};var Xd=function(a){function b(b,c,d){Kb(d)||(d=Vb),this.source=b,this._dt=c,this._s=d,a.call(this)}return tb(b,a),b.prototype.subscribeCore=function(a){var b=new Eb;return new Fb(this.source.subscribe(new Yd(a,this._dt,this._s,b)),b)},b}(kc),Yd=function(a){function b(b,c,d,e){this._o=b,this._d=c,this._scheduler=d,this._c=e,this._v=null,this._hv=!1,this._id=0,a.call(this)}return tb(b,a),b.prototype.next=function(a){this._hv=!0,this._v=a;var b=++this._id,c=new Db;this._c.setDisposable(c),c.setDisposable(this._scheduler.scheduleFuture(this,this._d,function(c,d){d._hv&&d._id===b&&d._o.onNext(a),d._hv=!1}))},b.prototype.error=function(a){this._c.dispose(),this._o.onError(a),this._hv=!1,this._id++},b.prototype.completed=function(){this._c.dispose(),this._hv&&this._o.onNext(this._v),this._o.onCompleted(),this._hv=!1,this._id++},b}(gc);Yb.debounce=function(){if(ua(arguments[0]))return $(this,arguments[0]);if("number"==typeof arguments[0])return new Xd(this,arguments[0],arguments[1]);throw new Error("Invalid arguments")};var Zd=function(a){function b(b,c){this.source=b,this._s=c,a.call(this)}return tb(b,a),b.prototype.subscribeCore=function(a){return this.source.subscribe(new $d(a,this._s))},b}(kc),$d=function(a){function b(b,c){this._o=b,this._s=c,a.call(this)}return tb(b,a),b.prototype.next=function(a){this._o.onNext({value:a,timestamp:this._s.now()})},b.prototype.error=function(a){this._o.onError(a)},b.prototype.completed=function(){this._o.onCompleted()},b}(gc);Yb.timestamp=function(a){return Kb(a)||(a=Vb),new Zd(this,a)};var _d=function(a){function b(b,c){this.source=b,this._sampler=c,a.call(this)}return tb(b,a),b.prototype.subscribeCore=function(a){var b={o:a,atEnd:!1,value:null,hasValue:!1,sourceSubscription:new Db};return b.sourceSubscription.setDisposable(this.source.subscribe(new be(b))),new Fb(b.sourceSubscription,this._sampler.subscribe(new ae(b)))},b}(kc),ae=function(a){function b(b){this._s=b,a.call(this)}return tb(b,a),b.prototype._handleMessage=function(){this._s.hasValue&&(this._s.hasValue=!1,this._s.o.onNext(this._s.value)),this._s.atEnd&&this._s.o.onCompleted()},b.prototype.next=function(){this._handleMessage()},b.prototype.error=function(a){this._s.onError(a)},b.prototype.completed=function(){this._handleMessage()},b}(gc),be=function(a){function b(b){this._s=b,a.call(this)}return tb(b,a),b.prototype.next=function(a){this._s.hasValue=!0,this._s.value=a},b.prototype.error=function(a){this._s.o.onError(a)},b.prototype.completed=function(){this._s.atEnd=!0,this._s.sourceSubscription.dispose()},b}(gc);Yb.sample=function(a,b){return Kb(b)||(b=Vb),"number"==typeof a?new _d(this,Wd(a,b)):new _d(this,a)};var ce=ma.TimeoutError=function(a){this.message=a||"Timeout has occurred",this.name="TimeoutError",Error.call(this)};ce.prototype=Object.create(Error.prototype),Yb.timeout=function(){var a=arguments[0];if(a instanceof Date||"number"==typeof a)return aa(this,a,arguments[1],arguments[2]);if(ic.isObservable(a)||ua(a))return _(this,a,arguments[1],arguments[2]);throw new Error("Invalid arguments")},Yb.throttle=function(a,b){Kb(b)||(b=Vb);var c=+a||0;if(0>=c)throw new RangeError("windowDuration cannot be less or equal zero.");var d=this;return new ie(function(a){var e=0;return d.subscribe(function(d){var f=b.now();(0===e||f-e>=c)&&(e=f,a.onNext(d))},function(b){a.onError(b)},function(){a.onCompleted()})},d)};var de=function(a){function b(b,c){this.source=b,this.controller=new le,this.paused=!0,c&&c.subscribe?this.pauser=this.controller.merge(c):this.pauser=this.controller,a.call(this)}return tb(b,a),b.prototype._subscribe=function(a){var b=this.source.publish(),c=b.subscribe(a),d=zb,e=this.pauser.startWith(!this.paused).distinctUntilChanged().subscribe(function(a){a?d=b.connect():(d.dispose(),d=zb)});return new Gb([c,d,e])},b.prototype.pause=function(){this.paused=!0,this.controller.onNext(!1)},b.prototype.resume=function(){this.paused=!1,this.controller.onNext(!0)},b}(ic);Yb.pausable=function(a){return new de(this,a)};var ee=function(b){function c(a,c){this.source=a,this.controller=new le,this.paused=!0,c&&c.subscribe?this.pauser=this.controller.merge(c):this.pauser=this.controller,b.call(this)}return tb(c,b),c.prototype._subscribe=function(b){function c(){for(;e.length>0;)b.onNext(e.shift())}var d,e=[],f=ba(this.source,this.pauser.startWith(!this.paused).distinctUntilChanged(),function(a,b){return{data:a,shouldFire:b}}).subscribe(function(f){d!==a&&f.shouldFire!==d?(d=f.shouldFire,f.shouldFire&&c()):(d=f.shouldFire,f.shouldFire?b.onNext(f.data):e.push(f.data))},function(a){c(),b.onError(a)},function(){c(),b.onCompleted()});return f},c.prototype.pause=function(){this.paused=!0,this.controller.onNext(!1)},c.prototype.resume=function(){this.paused=!1,this.controller.onNext(!0)},c}(ic);Yb.pausableBuffered=function(a){return new ee(this,a)};var fe=function(a){function b(b,c,d){a.call(this),this.subject=new ge(c,d),this.source=b.multicast(this.subject).refCount()}return tb(b,a),b.prototype._subscribe=function(a){return this.source.subscribe(a)},b.prototype.request=function(a){return this.subject.request(null==a?-1:a)},b}(ic),ge=function(a){function b(b,c){null==b&&(b=!0),a.call(this),this.subject=new le,this.enableQueue=b,this.queue=b?[]:null,this.requestedCount=0,this.requestedDisposable=null,this.error=null,this.hasFailed=!1,this.hasCompleted=!1,this.scheduler=c||Qb}return tb(b,a),ub(b.prototype,ec,{_subscribe:function(a){return this.subject.subscribe(a)},onCompleted:function(){this.hasCompleted=!0,this.enableQueue&&0!==this.queue.length?this.queue.push(Zb.createOnCompleted()):(this.subject.onCompleted(),this.disposeCurrentRequest())},onError:function(a){this.hasFailed=!0,this.error=a,this.enableQueue&&0!==this.queue.length?this.queue.push(Zb.createOnError(a)):(this.subject.onError(a),this.disposeCurrentRequest())},onNext:function(a){this.requestedCount<=0?this.enableQueue&&this.queue.push(Zb.createOnNext(a)):(0===this.requestedCount--&&this.disposeCurrentRequest(),this.subject.onNext(a))},_processRequest:function(a){if(this.enableQueue)for(;this.queue.length>0&&(a>0||"N"!==this.queue[0].kind);){var b=this.queue.shift();b.accept(this.subject),"N"===b.kind?a--:(this.disposeCurrentRequest(),this.queue=[])}return a},request:function(a){this.disposeCurrentRequest();var b=this;return this.requestedDisposable=this.scheduler.schedule(a,function(a,c){var d=b._processRequest(c),e=b.hasCompleted||b.hasFailed;return!e&&d>0?(b.requestedCount=d,yb(function(){b.requestedCount=0})):void 0}),this.requestedDisposable},disposeCurrentRequest:function(){this.requestedDisposable&&(this.requestedDisposable.dispose(),this.requestedDisposable=null)}}),b}(ic);Yb.controlled=function(a,b){return a&&Kb(a)&&(b=a,a=!0),null==a&&(a=!0),new fe(this,a,b)},Yb.pipe=function(a){function b(){c.resume()}var c=this.pausableBuffered();return a.addListener("drain",b),c.subscribe(function(b){!a.write(b)&&c.pause()},function(b){a.emit("error",b)},function(){!a._isStdio&&a.end(),a.removeListener("drain",b)}),c.resume(),a};var he=function(a){function b(b,c){this._o=b,this._xform=c,a.call(this)}return tb(b,a),b.prototype.next=function(a){var b=wa(this._xform["@@transducer/step"]).call(this._xform,this._o,a);b===va&&this._o.onError(b.e)},b.prototype.error=function(a){this._o.onError(a)},b.prototype.completed=function(){this._xform["@@transducer/result"](this._o)},b}(gc);Yb.transduce=function(a){var b=this;return new ie(function(c){var d=a(ca(c));return b.subscribe(new he(c,d))},b)};var ie=ma.AnonymousObservable=function(a){function b(a){return a&&ua(a.dispose)?a:ua(a)?yb(a):zb}function c(a,c){var d=c[0],f=c[1],g=wa(f.__subscribe).call(f,d);g!==va||d.fail(va.e)||e(va.e),d.setDisposable(b(g))}function d(b,c){this.source=c,this.__subscribe=b,a.call(this)}return tb(d,a),d.prototype._subscribe=function(a){var b=new je(a),d=[b,this];return Qb.scheduleRequired()?Qb.schedule(d,c):c(null,d),b},d}(ic),je=function(a){function b(b){a.call(this),this.observer=b,this.m=new Db}tb(b,a);var c=b.prototype;return c.next=function(a){var b=wa(this.observer.onNext).call(this.observer,a);b===va&&(this.dispose(),e(b.e))},c.error=function(a){var b=wa(this.observer.onError).call(this.observer,a);this.dispose(),b===va&&e(b.e)},c.completed=function(){var a=wa(this.observer.onCompleted).call(this.observer);this.dispose(),a===va&&e(a.e)},c.setDisposable=function(a){this.m.setDisposable(a)},c.getDisposable=function(){return this.m.getDisposable()},c.dispose=function(){a.prototype.dispose.call(this),this.m.dispose()},b}(gc),ke=function(a,b){this._s=a,this._o=b};ke.prototype.dispose=function(){if(!this._s.isDisposed&&null!==this._o){var a=this._s.observers.indexOf(this._o);this._s.observers.splice(a,1),this._o=null}};var le=ma.Subject=function(a){function b(){a.call(this),this.isDisposed=!1,this.isStopped=!1,this.observers=[],this.hasError=!1}return tb(b,a),ub(b.prototype,ec.prototype,{_subscribe:function(a){return Bb(this),this.isStopped?this.hasError?(a.onError(this.error),zb):(a.onCompleted(),zb):(this.observers.push(a),new ke(this,a))},hasObservers:function(){return Bb(this),this.observers.length>0},onCompleted:function(){if(Bb(this),!this.isStopped){this.isStopped=!0;for(var a=0,b=c(this.observers),d=b.length;d>a;a++)b[a].onCompleted();this.observers.length=0}},onError:function(a){if(Bb(this),!this.isStopped){this.isStopped=!0,this.error=a,this.hasError=!0;for(var b=0,d=c(this.observers),e=d.length;e>b;b++)d[b].onError(a);this.observers.length=0}},onNext:function(a){if(Bb(this),!this.isStopped)for(var b=0,d=c(this.observers),e=d.length;e>b;b++)d[b].onNext(a)},dispose:function(){this.isDisposed=!0,this.observers=null}}),b.create=function(a,b){return new ne(a,b)},b}(ic),me=ma.AsyncSubject=function(a){function b(){a.call(this),this.isDisposed=!1,this.isStopped=!1,this.hasValue=!1,this.observers=[],this.hasError=!1}return tb(b,a),ub(b.prototype,ec.prototype,{_subscribe:function(a){return Bb(this),this.isStopped?(this.hasError?a.onError(this.error):this.hasValue?(a.onNext(this.value),a.onCompleted()):a.onCompleted(),zb):(this.observers.push(a),new ke(this,a))},hasObservers:function(){return Bb(this),this.observers.length>0},onCompleted:function(){var a,b;if(Bb(this),!this.isStopped){this.isStopped=!0;var d=c(this.observers),b=d.length;if(this.hasValue)for(a=0;b>a;a++){var e=d[a];e.onNext(this.value),e.onCompleted()}else for(a=0;b>a;a++)d[a].onCompleted();this.observers.length=0}},onError:function(a){if(Bb(this),!this.isStopped){this.isStopped=!0,this.hasError=!0,this.error=a;for(var b=0,d=c(this.observers),e=d.length;e>b;b++)d[b].onError(a);this.observers.length=0}},onNext:function(a){Bb(this),this.isStopped||(this.value=a,this.hasValue=!0)},dispose:function(){this.isDisposed=!0,this.observers=null,this.error=null,this.value=null}}),b}(ic),ne=ma.AnonymousSubject=function(a){function b(b,c){this.observer=b,this.observable=c,a.call(this)}return tb(b,a),ub(b.prototype,ec.prototype,{_subscribe:function(a){return this.observable.subscribe(a)},onCompleted:function(){this.observer.onCompleted()},onError:function(a){this.observer.onError(a)},onNext:function(a){this.observer.onNext(a)}}),b}(ic),oe=ma.BehaviorSubject=function(a){function b(b){a.call(this),this.value=b,this.observers=[],this.isDisposed=!1,this.isStopped=!1,this.hasError=!1}return tb(b,a),ub(b.prototype,ec.prototype,{_subscribe:function(a){return Bb(this),this.isStopped?(this.hasError?a.onError(this.error):a.onCompleted(),zb):(this.observers.push(a),a.onNext(this.value),new ke(this,a))},getValue:function(){return Bb(this),this.hasError&&e(this.error),this.value},hasObservers:function(){return Bb(this),this.observers.length>0},onCompleted:function(){if(Bb(this),!this.isStopped){this.isStopped=!0;for(var a=0,b=c(this.observers),d=b.length;d>a;a++)b[a].onCompleted();this.observers.length=0}},onError:function(a){if(Bb(this),!this.isStopped){this.isStopped=!0,this.hasError=!0,this.error=a;for(var b=0,d=c(this.observers),e=d.length;e>b;b++)d[b].onError(a);this.observers.length=0}},onNext:function(a){if(Bb(this),!this.isStopped){this.value=a;for(var b=0,d=c(this.observers),e=d.length;e>b;b++)d[b].onNext(a)}},dispose:function(){this.isDisposed=!0,this.observers=null,this.value=null,this.error=null}}),b}(ic),pe=ma.ReplaySubject=function(a){function b(a,b){return yb(function(){b.dispose(),!a.isDisposed&&a.observers.splice(a.observers.indexOf(b),1)})}function d(b,c,d){this.bufferSize=null==b?e:b,this.windowSize=null==c?e:c,this.scheduler=d||Qb,this.q=[],this.observers=[],this.isStopped=!1,this.isDisposed=!1,this.hasError=!1,this.error=null,a.call(this)}var e=Math.pow(2,53)-1;return tb(d,a),ub(d.prototype,ec.prototype,{_subscribe:function(a){Bb(this);var c=new jc(this.scheduler,a),d=b(this,c);this._trim(this.scheduler.now()),this.observers.push(c);for(var e=0,f=this.q.length;f>e;e++)c.onNext(this.q[e].value);return this.hasError?c.onError(this.error):this.isStopped&&c.onCompleted(),c.ensureActive(),d},hasObservers:function(){return Bb(this),this.observers.length>0},_trim:function(a){for(;this.q.length>this.bufferSize;)this.q.shift();for(;this.q.length>0&&a-this.q[0].interval>this.windowSize;)this.q.shift()},onNext:function(a){if(Bb(this),!this.isStopped){var b=this.scheduler.now();this.q.push({interval:b,value:a}),this._trim(b);for(var d=0,e=c(this.observers),f=e.length;f>d;d++){var g=e[d];g.onNext(a),g.ensureActive()}}},onError:function(a){if(Bb(this),!this.isStopped){this.isStopped=!0,this.error=a,this.hasError=!0;var b=this.scheduler.now();this._trim(b);for(var d=0,e=c(this.observers),f=e.length;f>d;d++){var g=e[d];g.onError(a),g.ensureActive()}this.observers.length=0}},onCompleted:function(){if(Bb(this),!this.isStopped){this.isStopped=!0;var a=this.scheduler.now();this._trim(a);for(var b=0,d=c(this.observers),e=d.length;e>b;b++){var f=d[b];f.onCompleted(),f.ensureActive()}this.observers.length=0}},dispose:function(){this.isDisposed=!0,this.observers=null}}),d}(ic);ma.Pauser=function(a){function b(){a.call(this)}return tb(b,a),b.prototype.pause=function(){this.onNext(!1)},b.prototype.resume=function(){this.onNext(!0)},b}(le),"function"==typeof define&&"object"==typeof define.amd&&define.amd?(la.Rx=ma,define(function(){return ma})):ea&&fa?ja?(fa.exports=ma).Rx=ma:ea.Rx=ma:la.Rx=ma;var qe=j()}).call(this); | |
| //# sourceMappingURL=rx.lite.map |
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| @keyframes bounce { | |
| from { | |
| transform: translate3d(100px, 0, 0); | |
| } | |
| to { | |
| transform: translate3d(100px, 960px, 0); | |
| } | |
| } | |
| #ball { | |
| display: inline-block; | |
| width: 250px; | |
| height: 250px; | |
| border-radius: 50%; | |
| background-color: #F1F1F1; | |
| } | |
| #ball:hover { | |
| cursor: pointer; | |
| } | |
| #ball.selected { | |
| background: blue; | |
| } | |
| .bounce { | |
| animation-name: bounce; | |
| animation-duration: 0.575s; | |
| animation-direction: alternate; | |
| animation-timing-function: cubic-bezier(.6, 0.08, 0.8, .6); | |
| animation-iteration-count: infinite; | |
| } |
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