我正在做一个项目,该项目以不同的速度快速连续地对单个单词进行动画处理。我已经使用jQuery的.animate()和回调构建了快速而肮脏的东西来制作此动画。

您可以在Codepen上看到一个示例,下面的代码也可以看到(相当大)。

我想知道如何将其转换为使用GSAP。下面是我目前正在替代jQuery的.animate()的工作,该版本的Codepen也为here的工作:

TweenMax.staggerFromTo('.frame', 1, { opacity: 0, delay: 1 }, { opacity: 1, delay: 1 }, 1);


如您所见,我的GSAP版本无法像我的快速jQuery版本一样正常工作。

您还可以看到,在我巨大的jQuery可怕文件中,我可以轻松地修改每个帧的速度,这一点非常重要,因此我也需要能够使用GSAP版本来做到这一点。

我该怎么办?

HTML:

<!doctype html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
        <title></title>
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link rel="stylesheet" href="style.css">
        <link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600,700' rel='stylesheet' type='text/css'>
        <script>
            var clickTag="";
        </script>
    </head>
    <body>
        <div id="ad-container">
             <div id="preloader">
                <!-- show something while the assets load -->
                <div id="preloader"></div>
             </div>
             <div id="ad-content" class="loading">
                <div id="para-1">
                    <div id="frame1" data-speed="regPace" class="frame left">
                        <p>ANALYSING</p>
                    </div>
                    <div id="frame2" data-speed="regPace" class="frame left">
                        <p>complex</p>
                    </div>
                    <div id="frame3" data-speed="regPace" class="frame left">
                        <p>data</p>
                    </div>
                    <div id="frame4" data-speed="regPace" class="frame left">
                        <p>is</p>
                    </div>
                    <div id="frame5" data-speed="regPace" class="frame left">
                        <p>challenging.</p>
                    </div>
                    <div id="frame6" data-speed="regPace" class="frame left">
                        <p>Especially</p>
                    </div>
                    <div id="frame7" data-speed="regPace" class="frame left">
                        <p>here</p>
                    </div>
                    <div id="frame8" data-speed="regPace" class="frame left">
                        <p>at</p>
                    </div>
                    <div id="frame9" data-speed="slowPace" class="frame left">
                        <p>GCHQ.</p>
                    </div>
                    <div id="frame10" data-speed="regPace" class="frame left">
                        <p>Sometimes</p>
                    </div>
                    <div id="frame11" data-speed="regPace" class="frame left">
                        <p>you</p>
                    </div>
                    <div id="frame12" data-speed="regPace" class="frame left">
                        <p>have</p>
                    </div>
                    <div id="frame13" data-speed="regPace" class="frame left">
                        <p>to</p>
                    </div>
                    <div id="frame14" data-speed="regPace" class="frame left">
                        <p>act</p>
                    </div>
                    <div id="frame15" data-speed="regPace" class="frame left">
                        <p>quickly</p>
                    </div>
                    <div id="frame16" data-speed="regPace" class="frame left">
                        <p>but</p>
                    </div>
                    <div id="frame17" data-speed="regPace" class="frame left">
                        <p>accurately.</p>
                    </div>
                    <div id="frame18" data-speed="regPace" class="frame left">
                        <p>at</p>
                    </div>
                    <div id="frame19" data-speed="regPace" class="frame left">
                        <p>other</p>
                    </div>
                    <div id="frame20" data-speed="regPace" class="frame left">
                        <p>times,</p>
                    </div>
                    <div id="frame21" data-speed="regPace" class="frame left">
                        <p>you</p>
                    </div>
                    <div id="frame22" data-speed="regPace" class="frame left">
                        <p>get</p>
                    </div>
                    <div id="frame23" data-speed="regPace" class="frame left">
                        <p>to</p>
                    </div>
                    <div id="frame24" data-speed="regPace" class="frame left">
                        <p>spend</p>
                    </div>
                    <div id="frame25" data-speed="regPace" class="frame left">
                        <p>a</p>
                    </div>
                    <div id="frame26" data-speed="regPace" class="frame left">
                        <p>bit</p>
                    </div>
                    <div id="frame27" data-speed="regPace" class="frame left">
                        <p>more</p>
                    </div>
                    <div id="frame28" data-speed="regPace" class="frame left">
                        <p>time</p>
                    </div>
                    <div id="frame29" data-speed="regPace" class="frame left">
                        <p>on</p>
                    </div>
                    <div id="frame30" data-speed="regPace" class="frame left">
                        <p>things.</p>
                    </div>
                    <div id="frame31" data-speed="regPace" class="frame right">
                        <p>Sometimes</p>
                    </div>
                    <div id="frame32" data-speed="regPace" class="frame right">
                        <p>you</p>
                    </div>
                    <div id="frame33" data-speed="regPace" class="frame right">
                        <p>start</p>
                    </div>
                    <div id="frame34" data-speed="regPace" class="frame right">
                        <p>to</p>
                    </div>
                    <div id="frame35" data-speed="regPace" class="frame right">
                        <p>follow</p>
                    </div>
                    <div id="frame36" data-speed="regPace" class="frame right">
                        <p>a</p>
                    </div>
                    <div id="frame37" data-speed="regPace" class="frame right">
                        <p>line</p>
                    </div>
                    <div id="frame38" data-speed="regPace" class="frame right">
                        <p>of</p>
                    </div>
                    <div id="frame39" data-speed="regPace" class="frame right">
                        <p>thought</p>
                    </div>
                    <div id="frame40" data-speed="regPace" class="frame left">
                        <p>and</p>
                    </div>
                    <div id="frame41" data-speed="regPace" class="frame left">
                        <p>it</p>
                    </div>
                    <div id="frame42" data-speed="regPace" class="frame left">
                        <p>leads</p>
                    </div>
                    <div id="frame43" data-speed="regPace" class="frame left">
                        <p>to</p>
                    </div>
                    <div id="frame44" data-speed="regPace" class="frame left">
                        <p>a</p>
                    </div>
                    <div id="frame45" data-speed="regPace" class="frame left">
                        <p>dead</p>
                    </div>
                    <div id="frame46" data-speed="regPace" class="frame left">
                        <p>end.</p>
                    </div>
                </div>
                <!--<div id="frame1">
                    <h1>Banner content</h1>
                </div>
                <div id="frame2" class="off">
                    <h1>Banner content 2</h1>
                </div>-->
            </div>
        </div>
        <!--<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js"></script>-->
        <!--<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TimelineMax.min.js"></script>-->
        <!--<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/easing/EasePack.min.js"></script>-->
        <!--<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/plugins/AttrPlugin.min.js"></script>-->
        <script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
        <!--<script src="lib/zepto.min.js"></script>-->
        <script src="script.js"></script>
        <script src="http://cdn.flashtalking.com/frameworks/js/api/2/9/html5API.js"></script>
        <script type="text/javascript">
            container = myFT.$("#ad-container");
            myFT.applyClickTag(container, 1);
        </script>
    </body>
</html>


JavaScript:

$( document ).ready(function() {
var regPace = 400;
var fastPace = 200;
var slowPace = 700;
var pause = 1600;

var container = $('#ad-container'),
    content = $('#ad-content'),
    /*f1 = $('#frame1'),
    f2 = $('#frame2'),*/

    /*clickHandler = (function() {

    container.on( "click", function(event) {
            window.open( clickTag, "_blank" );
        });

    })(),*/

    ////////////////// READY ///////////////////

    bannerInit = function(){

        /// preload assets

        showBanner();
    },

    ////////////////// GET SET ///////////////////

    showBanner = function() {

        content.removeClass('loading');

        $('#preloader').addClass('off');

        anim();

    },

    ////////////////// GO ///////////////////

    anim = function(){


        // your animation stuff // GSAP or whatever

        /*$('#para-1 div').each(function(index,element){

            //var that = $(this);
            var speed = $(this).data('speed');
            if (speed == 'regPace') { pace = regPace};
            if (speed == 'fastPace') { pace = fastPace};
            if (speed == 'slowPace') { pace = slowPace};


            setTimeout(function(){

            console.log('the speed for '+index+': '+pace);

                $(element).animate({"opacity":"1",},0);

                $(element).delay(pace).animate({"opacity":"0",},0);
            },index * pace);
        });*/
        /*function doThis(){
            console.log('Paragraph 1 complete');
        }
        doThis();*/

        $('#frame1').animate({"opacity":"1",},0,function(){

            $('#frame1').delay(regPace).animate({"opacity":"0",},0);
            $('#frame2').delay(regPace).animate({"opacity":"1",},0,function(){

                $('#frame2').delay(regPace).animate({"opacity":"0",},0);
                $('#frame3').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame3').delay(regPace).animate({"opacity":"0",},0);
                $('#frame4').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame4').delay(regPace).animate({"opacity":"0",},0);
                $('#frame5').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame5').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame6').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame6').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame7').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame7').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame8').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame8').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame9').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame9').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame10').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame10').delay(fastPace).animate({"opacity":"0",},0);
            $('#frame11').delay(fastPace).animate({"opacity":"1",},0,function(){

                $('#frame11').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame12').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame12').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame13').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame13').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame14').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame14').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame15').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame15').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame16').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame16').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame17').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame17').delay(fastPace).animate({"opacity":"0",},0);
                $('#frame18').delay(fastPace).animate({"opacity":"1",},0,function(){

                    $('#frame18').delay(regPace).animate({"opacity":"0",},0);
                $('#frame19').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame19').delay(regPace).animate({"opacity":"0",},0);
            $('#frame20').delay(regPace).animate({"opacity":"1",},0,function(){

                $('#frame20').delay(regPace).animate({"opacity":"0",},0);
                $('#frame21').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame21').delay(regPace).animate({"opacity":"0",},0);
                $('#frame22').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame22').delay(regPace).animate({"opacity":"0",},0);
                $('#frame23').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame23').delay(regPace).animate({"opacity":"0",},0);
                $('#frame24').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame24').delay(regPace).animate({"opacity":"0",},0);
                $('#frame25').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame25').delay(regPace).animate({"opacity":"0",},0);
                $('#frame26').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame26').delay(slowPace).animate({"opacity":"0",},0);
                $('#frame27').delay(slowPace).animate({"opacity":"1",},0,function(){

                    $('#frame27').delay(slowPace).animate({"opacity":"0",},0);
                $('#frame28').delay(slowPace).animate({"opacity":"1",},0,function(){

                    $('#frame28').delay(slowPace).animate({"opacity":"0",},0);
            $('#frame29').delay(slowPace).animate({"opacity":"1",},0,function(){

                $('#frame29').delay(slowPace).animate({"opacity":"0",},0);
                $('#frame30').delay(slowPace).animate({"opacity":"1",},0,function(){

                    $('#frame30').delay(pause).animate({"opacity":"0",},0);
                $('#frame31').delay(pause).animate({"opacity":"1",},0,function(){

                    $('#frame31').delay(regPace).animate({"opacity":"0",},0);
                $('#frame32').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame32').delay(regPace).animate({"opacity":"0",},0);
                $('#frame33').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame33').delay(regPace).animate({"opacity":"0",},0);
                $('#frame34').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame34').delay(regPace).animate({"opacity":"0",},0);
                $('#frame35').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame35').delay(regPace).animate({"opacity":"0",},0);
                $('#frame36').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame36').delay(regPace).animate({"opacity":"0",},0);
                $('#frame37').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame37').delay(regPace).animate({"opacity":"0",},0);
                $('#frame38').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame38').delay(regPace).animate({"opacity":"0",},0);
                $('#frame39').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame39').delay(regPace).animate({"opacity":"0",},0);
            $('#frame40').delay(regPace).animate({"opacity":"1",},0,function(){

                $('#frame40').delay(regPace).animate({"opacity":"0",},0);
                $('#frame41').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame41').delay(regPace).animate({"opacity":"0",},0);
                $('#frame42').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame42').delay(regPace).animate({"opacity":"0",},0);
                $('#frame43').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame43').delay(regPace).animate({"opacity":"0",},0);
                $('#frame44').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame44').delay(regPace).animate({"opacity":"0",},0);
                $('#frame45').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame45').delay(regPace).animate({"opacity":"0",},0);
                $('#frame46').delay(regPace).animate({"opacity":"1",},0,function(){

                    $('#frame46').delay(regPace).animate({"opacity":"0",},0);


});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});
});

        /*$('#frame1').show(2000,function(){
            $(this).hide(0);
            $('#frame2').show(2000,function(){
                $(this).hide(0);
                $('#frame3').show();
            });
            console.log('jello');
        });*/

     }; //// END ANIM /////

     bannerInit();


});

最佳答案

首先,请阅读我的其中一个答案,其中introduces you to GSAP包含大量链接,如果您以前从未听说过或尝试过GSAP,请首先阅读。

其次,您的Codepen不适用于Chrome(45 +,Macbook Pro),但适用于Firefox。我不确定是什么原因,但我想是关于安全性的。

无论如何,由于callback-within-callbacks循环:),您的jQuery的animate()调用很难理解:即使我们继续使用animate(),我也不知道是否会有更好的方法。

话虽如此,使用GSAP制作所有动画的决定必须受到鼓掌:)

可以在here中找到Codepen URL,这是最终JavaScript的样子:

var timeline = new TimelineMax({ paused: true });
var easeOut = Power2.easeOut;
var easeIn = Power2.easeIn;
var durationRegular = 0.2;
var durationSlow = 0.8;
var durationFast = 0.1;
var pauseLocation = 5;
var pauseInterval = 2;
var container = $('#ad-container'), content = $('#ad-content');
var bannerInit = function() { showBanner(); };
var showBanner = function() {
  content.removeClass('loading');
  $('#preloader').addClass('off');
  anim();
};
var anim = function() {
  var frames = $('.frame');
  var numFrames = frames.length;
  var dataSpeed = '';
  TweenMax.set(frames, { autoAlpha: 0 });
  timeline
    .to(frames[0], 1, { autoAlpha: 1, ease: easeOut })
    .to(frames[0], durationRegular, { autoAlpha: 0, ease: easeIn });
  for (var i = 1; i < numFrames; i += 1) {
    dataSpeed = $(frames[i]).data('speed');
    var duration = durationRegular;
    if (dataSpeed === 'slowPace') {
      duration = durationSlow;
    } else if (dataSpeed === 'fastPace') {
      duration = durationFast;
    }
    timeline
      .to(frames[i], duration, { autoAlpha: 1, ease: easeOut })
      .to(frames[i], duration, { autoAlpha: 0, ease: easeIn });
  }
  timeline.play();
  timeline.addPause(pauseLocation, onTimelinePaused);
};
var onTimelinePaused = function() {
  TweenMax.delayedCall(pauseInterval, function() {
    timeline.resume();
  });
};
//
bannerInit();


此处使用的GSAP的主要功能称为TimelineMax,有关文档可在here中找到。

其他值得注意的功能是:


.set()TweenMax方法。
TimelineMax的.play().resume()方法。
TimelineMax的.addPause()方法。
autoAlpha属性,可以在CSSPlugin中找到。
可以在文档的Easing部分中找到Power2缓动。


如果您有疑问,请告诉我。

10-07 14:53