将动画添加到动画中的最终广场
问题描述：
我以HTML/CSS的形式呈现此动画。动画中的最后一个方块是绿色的，我试图让它每次在最后一次动画循环之前出现绿色方块。因为在目前的状态下，它总是出现在最后一个广场！将动画添加到动画中的最终广场
HTML：
<div class="loader">
<div class="square" ></div>
<div class="square"></div>
<div class="square last"></div>
<div class="square clear"></div>
<div class="square"></div>
<div class="square last"></div>
<div class="square clear"></div>
<div class="square "></div>
<div class="square last"></div>
</div>
CSS
@-webkit-keyframes enter {
0% {
opacity: 0;
top: -10px;
}
5% {
opacity: 1;
top: 0px;
}
50.9% {
opacity: 1;
top: 0px;
}
55.9% {
opacity: 0;
top: 10px;
}
}
@keyframes enter {
0% {
opacity: 0;
top: -10px;
}
5% {
opacity: 1;
top: 0px;
}
50.9% {
opacity: 1;
top: 0px;
}
55.9% {
opacity: 0;
top: 10px;
}
}
@-moz-keyframes enter {
0% {
opacity: 0;
top: -10px;
}
5% {
opacity: 1;
top: 0px;
}
50.9% {
opacity: 1;
top: 0px;
}
55.9% {
opacity: 0;
top: 10px;
}
}
body {
background: #1fbeca;
}
* {
margin: 0;
}
.loader {
position: absolute;
left: 50%;
top: 50%;
margin-left: -27.5px;
margin-top: -27.5px;
}
.square {
background: white;
width: 15px;
height: 15px;
float: left;
top: -10px;
margin-right: 5px;
margin-top: 5px;
position: relative;
opacity: 0;
-webkit-animation: enter 6s infinite;
animation: enter 6s infinite;
}
.enter {
top: 0px;
opacity: 1;
}
.square:nth-child(1) {
-webkit-animation-delay: 1.8s;
-moz-animation-delay: 1.8s;
animation-delay: 1.8s;
}
.square:nth-child(2) {
-webkit-animation-delay: 2.1s;
-moz-animation-delay: 2.1s;
animation-delay: 2.1s;
}
.square:nth-child(3) {
-webkit-animation-delay: 2.4s;
-moz-animation-delay: 2.4s;
animation-delay: 2.4s;
background: #fdc96f;
}
.square:nth-child(4) {
-webkit-animation-delay: 0.9s;
-moz-animation-delay: 0.9s;
animation-delay: 0.9s;
}
.square:nth-child(5) {
-webkit-animation-delay: 1.2s;
-moz-animation-delay: 1.2s;
animation-delay: 1.2s;
}
.square:nth-child(6) {
-webkit-animation-delay: 1.5s;
-moz-animation-delay: 1.5s;
animation-delay: 1.5s;
}
.square:nth-child(8) {
-webkit-animation-delay: 0.3s;
-moz-animation-delay: 0.3s;
animation-delay: 0.3s;
}
.square:nth-child(9) {
-webkit-animation-delay: 0.6s;
-moz-animation-delay: 0.6s;
animation-delay: 0.6s;
}
.clear {
clear: both;
}
.last {
margin-right: 0;
}
答
为了有充分的时间 '进入' 动画运行彩色方块移动位置，创建一个新的动画是“进入”动画长度的9倍。
这个长度的原因是9个方格中的每一个需要为“进入”动画的全部运行设置动画。
9格x 6s = 54s。
对于此动画的1/9（约为11％），我们更改了正方形的颜色。
@keyframes squarecolor {
0%, 11.1% {
background-color: #fdc96f;
}
11.2%, 100% {
background-color: white;
}
}
然后，将该动画应用到每个方块，就像'enter'动画一样。尽管如此，每个方格应该以6秒为单位逐步延迟。
答
您可以通过使用第二个动画来实现该效果，该动画将动画的整个循环一次变为黄色。
第二个动画在所有9个方块（6s * 9 = 54s）运行第一个动画后循环，每个方块延迟到某个6s的间隔以与相应的应该是黄色的循环对齐。
@-webkit-keyframes enter {
0% {
opacity: 0;
top: -10px;
}
5% {
opacity: 1;
top: 0px;
}
50.9% {
opacity: 1;
top: 0px;
}
55.9% {
opacity: 0;
top: 10px;
}
}
@keyframes enter {
0% {
opacity: 0;
top: -10px;
}
5% {
opacity: 1;
top: 0px;
}
50.9% {
opacity: 1;
top: 0px;
}
55.9% {
opacity: 0;
top: 10px;
}
}
@-webkit-keyframes change {
0% {
background: #fdc96f;
}
11.11% { /* one 6s frame in a 54s animation (6/54 = .1111) */
background: #fdc96f;
}
11.12% {
background: white;
}
100% {
background: white;
}
}
@keyframes change {
0% {
background: #fdc96f;
}
11.11% {
background: #fdc96f;
}
11.12% {
background: white;
}
100% {
background: white;
}
}
body {
background: #1fbeca;
}
* {
margin: 0;
}
.loader {
position: absolute;
left: 50%;
top: 50%;
margin-left: -27.5px;
margin-top: -27.5px;
}
.square {
background: white;
width: 15px;
height: 15px;
float: left;
top: -10px;
margin-right: 5px;
margin-top: 5px;
position: relative;
opacity: 0;
}
.enter {
top: 0px;
opacity: 1;
}
.square:nth-child(1) {
-webkit-animation: enter 6s 1.8s infinite, change 54s 12s infinite;
animation: enter 6s 1.8s infinite, change 54s 12s infinite;
}
.square:nth-child(2) {
-webkit-animation: enter 6s 2.1s infinite, change 54s 6s infinite;
animation: enter 6s 2.1s infinite, change 54s 6s infinite;
}
.square:nth-child(3) {
-webkit-animation: enter 6s 2.4s infinite, change 54s infinite;
animation: enter 6s 2.4s infinite, change 54s infinite;
}
.square:nth-child(4) {
-webkit-animation: enter 6s 0.9s infinite, change 54s 30s infinite;
animation: enter 6s 0.9s infinite, change 54s 30s infinite;
}
.square:nth-child(5) {
-webkit-animation: enter 6s 1.2s infinite, change 54s 24s infinite;
animation: enter 6s 1.2s infinite, change 54s 24s infinite;
}
.square:nth-child(6) {
-webkit-animation: enter 6s 1.5s infinite, change 54s 18s infinite;
animation: enter 6s 1.5s infinite, change 54s 18s infinite;
}
.square:nth-child(7) {
-webkit-animation: enter 6s infinite, change 54s 48s infinite;
animation: enter 6s infinite, change 54s 48s infinite;
}
.square:nth-child(8) {
-webkit-animation: enter 6s 0.3s infinite, change 54s 42s infinite;
animation: enter 6s 0.3s infinite, change 54s 42s infinite;
}
.square:nth-child(9) {
-webkit-animation: enter 6s 0.6s infinite, change 54s 36s infinite;
animation: enter 6s 0.6s infinite, change 54s 36s infinite;
}
.clear {
clear: both;
}
.last {
margin-right: 0;
}<div class="loader">
<div class="square"></div>
<div class="square"></div>
<div class="square last"></div>
<div class="square clear"></div>
<div class="square"></div>
<div class="square last"></div>
<div class="square clear"></div>
<div class="square "></div>
<div class="square last"></div>
</div>