頁面加載骨架

應用場景:在一些追求用戶體驗比較極致的應用,咱們須要作比較友好的頁面加載效果。this

首先咱們要清楚頁面的結構,而後先寫好一套用來加載過渡的模板(也就是咱們寫好的骨架),當數據加載完成把咱們的要展現的頁面顯示給用戶看。spa

骨架代碼:code

HTML:blog

 <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>
</div>

CSS:animation

.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: 40px;
    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;
}

當頁面正在加載的時候,咱們顯示這個骨架模板,而後當咱們的請求完成後,把這個骨架模板替換成咱們要顯示的數據模板,這樣就能夠了。it

這是其中一種方式,固然也有其餘的方式,你們能夠根據這個思路本身拓展開。io

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