效果图:
此处跟随鼠标滑动的白条,是用css写出来的,有用到 :hover +++ 的属性,代码中有详细介绍~~
css中“~”(波浪号)、“,”(逗号)、 “ + ”(加号)和 “ > ”(大于号)是什么意思?
加油了!!CSS还是需要学习滴~~~ 👍
代码如下:
<template>
<div class="overall">
<div class="tab-box">
<span
v-for="(i,index) in 4"
:key="index"
:class="defaultIndex==index?'active':''"
@click="defaultIndex=index"
>
<div class="dot"></div>
{{list[index]}}
</span>
<div class="bar-box">
<div class="bar"></div>
</div>
</div>
<svg style="width: 0; height: 0;">
<defs>
<filter id="goo">
<feGaussianBlur in="SourceGraphic" result="blur" stdDeviation="4" />
<feColorMatrix
in="blur"
mode="matrix"
values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 18 -7"
result="goo"
/>
<feBlend in2="goo" in="SourceGraphic" result="mix" />
</filter>
</defs>
</svg>
</div>
</template>
<script>
export default {
data() {
return {
defaultIndex: 1,
list:['A','B','C','D']
};
}
};
</script>
<style lang="scss" scoped>
.tab-box {
box-shadow: 0 0 5px #ccc;
width: 400px;
height: 50px;
background: #0084ff;
border-radius: 2px;
display: flex;
position: relative;
z-index: 99;
}
//------------------------------------鼠标点击后加载类似水滴的动画部分-------------------------------------
.tab-box span {
display: block;
flex-grow: 1;
line-height: 50px;
font-weight: bold;
cursor: pointer;
position: relative;
transition: 0.5s ease;
user-select: none;
color: white;
border-bottom: 3px solid transparent;
.dot {
display: inline-block;
width: 30px;
height: 10px;
//此处引用的是滤镜效果,相当于在字母的最上层放置一个滤镜模板,在这个模板里小圆球的移动,会有种黏黏的感觉
-webkit-filter: url("#goo");
filter: url("#goo");
position: absolute;
background: #0084ff;
left: calc(50% - 15px);
top: 1px;
&::after {
content: "";
position: absolute;
left: calc(50% - 6px);
width: 12px;
height: 12px;
display: block;
background: #0084ff;
border-radius: 50%;
}
}
}
.active {
text-shadow: 0 0 10px white;
border-bottom: 3px solid white !important;
}
.active .dot::after {
animation: gooey 1s both 1 ease;
}
@keyframes gooey {
50% {
transform: translateY(-30px) scaleX(0.8);
}
}
//------------------------------------鼠标点击后加载类似水滴的动画部分-------------------------------------
//------------------------------------鼠标经过的下划线跟随部分-------------------------------------
.tab-box span:hover {
text-shadow: 0 0 10px white;
}
//此处会发现有 + * + * + * + 这样的东西,百度了一下,没找到具体介绍
//感觉应该是控制该元素之外的的标签 比如此处有4个 span标签,+ * + * + * +的意思就是4层之后的标签
//每个span标签所处的层数不一样,所以就会有不同数量的 +*+*+*
.tab-box span:nth-of-type(1):hover + * + * + * + .bar-box .bar {
left: 0;
}
.tab-box span:nth-of-type(2):hover + * + * + .bar-box .bar {
left: 25%;
}
.tab-box span:nth-of-type(3):hover + * + .bar-box .bar {
left: 50%;
}
.tab-box span:nth-of-type(4):hover + .bar-box .bar {
left: 75%;
}
.bar-box {
width: 100%;
height: 100%;
border-radius: 2px;
overflow: hidden;
position: absolute;
z-index: -1;
}
.tab-box .bar {
width: 25%;
height: 3px;
position: absolute;
left: -25%;
bottom: 0;
background: white;
transition: 0.5s ease;
opacity: 0.9;
}
//------------------------------------鼠标经过的下划线跟随部分-------------------------------------
</style>