升级版header吸顶后滑动变色(二)
![](https://img2020.cnblogs.com/blog/1909089/202005/1909089-20200506142720512-357326797.gif)
<van-nav-bar fixed id="opacityHeader" //拉伸状态显示的header
title="赛事"
left-arrow
color=''
/>
<van-nav-bar fixed id="notreal" //未拉伸状态显示的header
title="赛事"
left-arrow
color=''
/>
js:
scroll(){
// debugger
let winHeight = $(window).scrollTop()
document.getElementById('opacityHeader').style.opacity=winHeight*0.01
},
css:
#notreal{
background: none!important
}
.van-nav-bar{
background: #4e8eff;
color: white;
}