我要评论效果图
.wxml
<view class='tabbar'>
<view class='tabitem wx:if="{{tabclick===0?"click":""}}"' bindtap='clicktab' data-index='0'>tab1</view>
<view class='tabitem wx:if="{{tabclick===1?"click":""}}"' bindtap='clicktab' data-index='1'>tab2 </view>
<view class='tabitem wx:if="{{tabclick===2?"click":""}}"' bindtap='clicktab' data-index='2'>tab3 </view>
<view class='underline' animation="{{animationdata}}" style='left:{{isleft}}'></view>
</view>
.wxss
.tabbar{
height: 80rpx;
background-color:#50b7ea;
width: 100%;
font-size: 28rpx;
color: rgba(255,255,255,0.50);
position: fixed;
top: 0;
left: 0;
display: flex;
justify-content: center;
align-items: center;
z-index: 997;
}
.tabitem{
width: 33.333%;
display: flex;
align-content: center;
justify-content: center;
position: relative;
height: 100%;
font-size: 28rpx;
}
.click{
color: white;
}
.underline{
position: absolute;
content: '';
width: 84rpx;
height: 3px;
background-color:white;
bottom: 0;
}
.js
data:{
tabclick: 0,
animationdata: {},
isleft: '12%'
},
swipertab: function (e) {
var that = this;
var index = e.detail.current
console.log(e.detail.current)
var animation = wx.createanimation({
duration: 1000,
timingfunction: "ease",
})
this.animation = animation
if (index === 0) {
animation.translate(0, 0).step();
that.setdata({
animationdata: animation.export()
})
that.setdata({
tabclick: e.detail.current
});
} else if (index === 1) {
var w = wx.getsysteminfosync().windowwidth;
w = w * 0.32
animation.translate(w, 0).step();
that.setdata({
animationdata: animation.export()
})
that.setdata({
tabclick: e.detail.current
});
} else if(index === 2){
var w = wx.getsysteminfosync().windowwidth;
w = w * 0.65
animation.translate(w, 0).step();
that.setdata({
animationdata: animation.export()
})
that.setdata({
tabclick: e.detail.current
});
}
},
总结
以上所述是小编给大家介绍的微信小程序导航栏跟随滑动效果的实现代码，希望对大家有所帮助
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