一个 图片 滚动 飞入的css特效
Posted 曹增令
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@keyframes bounceInLeft { from, 60%, 75%, 90%, to {animation-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);} 0% {opacity: 0;transform: translate3d(-3000px, 0, 0);} 60% {opacity: 1;transform: translate3d(25px, 0, 0);} 75% {transform: translate3d(-10px, 0, 0);} 90% {transform: translate3d(5px, 0, 0);} 100% {opacity: 1;transform: none;} } @keyframes bounceInRight { from, 60%, 75%, 90%, to {animation-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);} 0% {opacity: 0;transform: translate3d(3000px, 0, 0);} 60% {opacity: 1;transform: translate3d(-25px, 0, 0);} 75% {transform: translate3d(10px, 0, 0);} 90% {transform: translate3d(-5px, 0, 0);} 100% {opacity: 1;transform: none;} } .page5-tu1,.page5-tu2,.page5-tu3,.page5-tu4{ position: absolute; width: REM(480); height: REM(206); left: 50%; margin-left: REM(-240); opacity: 0; } .page5-tu1{ bottom: REM(778); animation: bounceInLeft 0.5s 0.25s linear forwards; } .page5-tu2{ bottom: REM(548); animation: bounceInLeft 0.7s 0.45s linear forwards; } .page5-tu3{ bottom: REM(314); animation: bounceInRight 0.9s 0.65s linear forwards; } .page5-tu4{ bottom: REM(81); animation: bounceInRight 1.1s 0.85s linear forwards; }
<div class="travelType">
<img class="page5-tu1" src="./images/p5_tu1.png" name="travel1"/>
<img class="page5-tu2" src="./images/p5_tu2.png" name="travel2"/>
<img class="page5-tu3" src="./images/p5_tu3.png" name="travel3"/>
<img class="page5-tu4" src="./images/p5_tu4.png" name="travel4"/>
</div>
(function animateUp(){ var obj = $(‘.CfadeInUp‘); var objH= $(‘.CfadeInUp‘).outerHeight(); var num = []; var wH = $(window).height(); var wScrollTop = $(window).scrollTop(); // 获取页面所有obj的top位置,存入数组 for(var i=0; i<obj.length;i++){ num.push(obj.eq(i).offset().top+(objH/3)); } // 循环数组,判断obj的位置是否在可视区中 function judgeTop(){ for(var j=0; j<num.length;j++){ if (num[j] >= wScrollTop && num[j] < (wScrollTop+wH)) { obj.eq(j).css({ ‘animation-name‘:‘bounceInRight‘, ‘opacity‘:‘1‘ }); } } }; // 触发滚动事件调用判断函数 $(window).scroll(function(event) { wH = $(window).height(); wScrollTop = $(window).scrollTop(); judgeTop(); }); })();
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