c7add6cf
 “wangming”
初始版本开发完毕
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// 引入bindingx，此库类似于微信小程序wxs，目的是让js运行在视图层，减少视图层和逻辑层的通信折损
const BindingX = uni.requireNativePlugin('bindingx')
export default {
methods: {
// 此处不写注释，请自行体会
nvueScrollHandler(e) {
const anchor = this.$refs['u-scroll-list__scroll-view'].ref
const element = this.$refs['u-scroll-list__indicator__line__bar'].ref
const scrollLeft = e.contentOffset.x
const contentSize = e.contentSize.width
const { scrollWidth } = this
const barAllMoveWidth = this.indicatorWidth - this.indicatorBarWidth
// 在安卓和iOS上，需要除的倍数不一样，iOS需要除以2
const actionNum = uni.$u.os() === 'ios' ? 2 : 1
const expression = `(x / ${actionNum}) / ${contentSize - scrollWidth} * ${barAllMoveWidth}`
BindingX.bind({
anchor,
eventType: 'scroll',
props: [{
element,
property: 'transform.translateX',
expression
}]
})
}
}
}
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