小程序自定义 scroll-view 滚动条
话不多说, 直接上效果图
效果图
wxml代码
<scroll-view scroll-x
class="scroll-view"
bindscroll="bindScroll">
<block wx:for="{{arr}}" wx:key="index">
<view class="scroll-item">scroll-view{{index}}</view>
</block>
</scroll-view>
<!-- 滚动条 -->
<view class="slide">
<view class='slide-bar'>
<view class="slide-action"
style="width:{{slideWidth}}rpx; margin-left:{{slideLeft<=1 ? 0 : slideLeft+'rpx'}};">
</view>
</view>
</view>
wxss代码
page{
height: 100vh;
background: rgb(111, 80, 65)
}
.scroll-view{
display: flex;
width: 100%;
white-space: nowrap;
padding-top: 20rpx;
}
.scroll-item:nth-child(1){
margin-left: 40rpx;
}
.scroll-item {
display: inline-block;
width: 550rpx;
height: 463rpx;
background: rgba(199, 180, 165);
border-radius: 20rpx;
margin-right: 30rpx;
color: #fff;
}
.slide{
background:rgb(111, 80, 65);
width:100%;
padding-top:20rpx;
}
.slide .slide-bar{
width:180rpx;
margin:0 auto;
height: 4rpx;
background: rgba(255,255,255,.2);
}
.slide .slide-bar .slide-action{
height:100%;
background:#fff;
}
js代码
data: {
arr: 10,
slideWidth: '',
slideLeft: ''
},
onLoad: function (options) {
// 计算比例
this.calcRatio();
},
calcRatio() {
var windowWidth = wx.getSystemInfoSync().windowWidth;
// 计算列表总长度
var totalLength = (this.data.arr * 580) + 40;
// 计算滑块的比例
var slideRatio = 180 / totalLength * (750 / windowWidth);
var sliderWidth = 750 / totalLength * 180;
this.setData({
slideWidth: sliderWidth,
totalLength: totalLength,
slideRatio: slideRatio
})
},
bindScroll(e) {
this.setData({
slideLeft: e.detail.scrollLeft * this.data.slideRatio
})
},
附：scroll-view可滚动视图区域
总结
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