[英]How to center loading animation and make the rest of page like a lightbox effect?
我有以下加載器css:
.loader {
border: 16px solid #f3f3f3; /* Light grey */
border-top: 16px solid #3498db; /* Blue */
border-radius: 50%;
width: 80px;
height: 80px;
animation: spin 2s linear infinite;
position: absolute;
margin: auto;
top:-90px;
bottom:0;
right:0;
left:0;
z-index:1020;
overflow: auto;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
HTML看起來像這樣(來自vuejs模板):
<template>
<div class="container">
<div class="row">
<div class=" mx-auto col-sm-8">
<section>
<div v-if="showloader" class="loader"></div>
</section>
</div>
</div>
</div>
</template>
如果showloader為false,則不會渲染包含class loader的div。 如果showloader變為true,則將渲染此div。 因此,這是動態綁定到showloader變量值的。
JavaScript看起來像這樣:
var showloader = false;
function doSomething() {
showloader = true;
setTimeout(function(){
showloader = false;
alert("Hello");
}, 3000);
}
doSomething();
主頁上的頂部導航欄帶有各種按鈕(HTML中未顯示)。 當showloader為true時,用戶不應像通過透明背景看到頁面的燈箱效果那樣與頁面進行交互。 還有如何在瀏覽器視口中居中加載動畫?
我花了幾個小時,但沒有運氣。
您可以將動畫元素嵌套在div
。 然后,您可以將模式屬性應用於div
。
.loader { position: fixed; top: 0; bottom: 0; right: 0; left: 0; z-index: 1020; display: flex; justify-content: center; align-items: center; background-color: rgba(0, 0, 0, .85); } .loader span { display: block; border: 16px solid #f3f3f3; /* Light grey */ border-top: 16px solid #3498db; /* Blue */ border-radius: 50%; width: 80px; height: 80px; animation: spin 2s linear infinite; }
<article>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit quae voluptas, saepe eum optio deleniti sint autem illum distinctio eos voluptatem hic ab illo, est consequatur nihil consectetur ratione aliquam?</article> <article>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit quae voluptas, saepe eum optio deleniti sint autem illum distinctio eos voluptatem hic ab illo, est consequatur nihil consectetur ratione aliquam?</article> <article>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit quae voluptas, saepe eum optio deleniti sint autem illum distinctio eos voluptatem hic ab illo, est consequatur nihil consectetur ratione aliquam?</article> <article>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit quae voluptas, saepe eum optio deleniti sint autem illum distinctio eos voluptatem hic ab illo, est consequatur nihil consectetur ratione aliquam?</article> <article>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit quae voluptas, saepe eum optio deleniti sint autem illum distinctio eos voluptatem hic ab illo, est consequatur nihil consectetur ratione aliquam?</article> <article>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit quae voluptas, saepe eum optio deleniti sint autem illum distinctio eos voluptatem hic ab illo, est consequatur nihil consectetur ratione aliquam?</article> <article>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Odit quae voluptas, saepe eum optio deleniti sint autem illum distinctio eos voluptatem hic ab illo, est consequatur nihil consectetur ratione aliquam?</article> <div class="loader"><span></span></div>
加載程序類應位於頁面中間,如下所示:
.loader { border: 16px solid #f3f3f3; /* Light grey */ border-top: 16px solid #3498db; /* Blue */ border-radius: 50%; width: 80px; height: 80px; animation: spin 2s linear infinite; position: absolute; top: calc(50vh - 40px); left: calc(50vw - 40px); z-index:1020; overflow: auto; }
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