如何像预加载器一样实现 Youtube
How to implement Youtube like preloader
我在 YouTube 上看到了一个预加载器,看起来像这样
我喜欢在我的网站上实现这种类型的预加载器,找不到如何实现这种类型的预加载器,它根据屏幕尺寸和主题[深色或正常]而变化
我已经实现了这样的普通预加载器
$(window).on('load', function () {
$('#preloader').delay(350).fadeOut('slow');
$('body').delay(350).css({ 'overflow': 'visible' });
})
任何人都可以帮助找到使用的预加载器的类型,是这个图像还是其他东西。
这些叫做骨骼加载预加载器,您可以参考this example also consider using this library轻松创建这样的预加载器。
.timeline-item {
background: #fff;
border: 1px solid;
border-color: #e5e6e9 #dfe0e4 #d0d1d5;
border-radius: 3px;
padding: 12px;
margin: 0 auto;
max-width: 472px;
min-height: 200px;
}
@keyframes placeHolderShimmer{
0%{
background-position: -468px 0
}
100%{
background-position: 468px 0
}
}
.animated-background {
animation-duration: 1s;
animation-fill-mode: forwards;
animation-iteration-count: infinite;
animation-name: placeHolderShimmer;
animation-timing-function: linear;
background: #f6f7f8;
background: linear-gradient(to right, #eeeeee 8%, #dddddd 18%, #eeeeee 33%);
background-size: 800px 104px;
height: 96px;
position: relative;
}
.background-masker {
background: #fff;
position: absolute;
}
/* Every thing below this is just positioning */
.background-masker.header-top,
.background-masker.header-bottom,
.background-masker.subheader-bottom {
top: 0;
left: 40px;
right: 0;
height: 10px;
}
.background-masker.header-left,
.background-masker.subheader-left,
.background-masker.header-right,
.background-masker.subheader-right {
top: 10px;
left: 40px;
height: 8px;
width: 10px;
}
.background-masker.header-bottom {
top: 18px;
height: 6px;
}
.background-masker.subheader-left,
.background-masker.subheader-right {
top: 24px;
height: 6px;
}
.background-masker.header-right,
.background-masker.subheader-right {
width: auto;
left: 300px;
right: 0;
}
.background-masker.subheader-right {
left: 230px;
}
.background-masker.subheader-bottom {
top: 30px;
height: 10px;
}
.background-masker.content-top,
.background-masker.content-second-line,
.background-masker.content-third-line,
.background-masker.content-second-end,
.background-masker.content-third-end,
.background-masker.content-first-end {
top: 40px;
left: 0;
right: 0;
height: 6px;
}
.background-masker.content-top {
height:20px;
}
.background-masker.content-first-end,
.background-masker.content-second-end,
.background-masker.content-third-end{
width: auto;
left: 380px;
right: 0;
top: 60px;
height: 8px;
}
.background-masker.content-second-line {
top: 68px;
}
.background-masker.content-second-end {
left: 420px;
top: 74px;
}
.background-masker.content-third-line {
top: 82px;
}
.background-masker.content-third-end {
left: 300px;
top: 88px;
}
<div class="timeline-wrapper">
<div class="timeline-item">
<div class="animated-background">
<div class="background-masker header-top"></div>
<div class="background-masker header-left"></div>
<div class="background-masker header-right"></div>
<div class="background-masker header-bottom"></div>
<div class="background-masker subheader-left"></div>
<div class="background-masker subheader-right"></div>
<div class="background-masker subheader-bottom"></div>
<div class="background-masker content-top"></div>
<div class="background-masker content-first-end"></div>
<div class="background-masker content-second-line"></div>
<div class="background-masker content-second-end"></div>
<div class="background-masker content-third-line"></div>
<div class="background-masker content-third-end"></div>
</div>
</div>
</div>
我在 YouTube 上看到了一个预加载器,看起来像这样
我喜欢在我的网站上实现这种类型的预加载器,找不到如何实现这种类型的预加载器,它根据屏幕尺寸和主题[深色或正常]而变化
我已经实现了这样的普通预加载器
$(window).on('load', function () {
$('#preloader').delay(350).fadeOut('slow');
$('body').delay(350).css({ 'overflow': 'visible' });
})
任何人都可以帮助找到使用的预加载器的类型,是这个图像还是其他东西。
这些叫做骨骼加载预加载器,您可以参考this example also consider using this library轻松创建这样的预加载器。
.timeline-item {
background: #fff;
border: 1px solid;
border-color: #e5e6e9 #dfe0e4 #d0d1d5;
border-radius: 3px;
padding: 12px;
margin: 0 auto;
max-width: 472px;
min-height: 200px;
}
@keyframes placeHolderShimmer{
0%{
background-position: -468px 0
}
100%{
background-position: 468px 0
}
}
.animated-background {
animation-duration: 1s;
animation-fill-mode: forwards;
animation-iteration-count: infinite;
animation-name: placeHolderShimmer;
animation-timing-function: linear;
background: #f6f7f8;
background: linear-gradient(to right, #eeeeee 8%, #dddddd 18%, #eeeeee 33%);
background-size: 800px 104px;
height: 96px;
position: relative;
}
.background-masker {
background: #fff;
position: absolute;
}
/* Every thing below this is just positioning */
.background-masker.header-top,
.background-masker.header-bottom,
.background-masker.subheader-bottom {
top: 0;
left: 40px;
right: 0;
height: 10px;
}
.background-masker.header-left,
.background-masker.subheader-left,
.background-masker.header-right,
.background-masker.subheader-right {
top: 10px;
left: 40px;
height: 8px;
width: 10px;
}
.background-masker.header-bottom {
top: 18px;
height: 6px;
}
.background-masker.subheader-left,
.background-masker.subheader-right {
top: 24px;
height: 6px;
}
.background-masker.header-right,
.background-masker.subheader-right {
width: auto;
left: 300px;
right: 0;
}
.background-masker.subheader-right {
left: 230px;
}
.background-masker.subheader-bottom {
top: 30px;
height: 10px;
}
.background-masker.content-top,
.background-masker.content-second-line,
.background-masker.content-third-line,
.background-masker.content-second-end,
.background-masker.content-third-end,
.background-masker.content-first-end {
top: 40px;
left: 0;
right: 0;
height: 6px;
}
.background-masker.content-top {
height:20px;
}
.background-masker.content-first-end,
.background-masker.content-second-end,
.background-masker.content-third-end{
width: auto;
left: 380px;
right: 0;
top: 60px;
height: 8px;
}
.background-masker.content-second-line {
top: 68px;
}
.background-masker.content-second-end {
left: 420px;
top: 74px;
}
.background-masker.content-third-line {
top: 82px;
}
.background-masker.content-third-end {
left: 300px;
top: 88px;
}
<div class="timeline-wrapper">
<div class="timeline-item">
<div class="animated-background">
<div class="background-masker header-top"></div>
<div class="background-masker header-left"></div>
<div class="background-masker header-right"></div>
<div class="background-masker header-bottom"></div>
<div class="background-masker subheader-left"></div>
<div class="background-masker subheader-right"></div>
<div class="background-masker subheader-bottom"></div>
<div class="background-masker content-top"></div>
<div class="background-masker content-first-end"></div>
<div class="background-masker content-second-line"></div>
<div class="background-masker content-second-end"></div>
<div class="background-masker content-third-line"></div>
<div class="background-masker content-third-end"></div>
</div>
</div>
</div>