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function computeTransformedData(oldArr) {
if ((!props.flxedBlockHeight && props.pageMode && vb.value) || !props.pageMode) {
let curHeight = props.pageMode ? vb.value.offsetTop : 0
// 每一次的虚拟列表的第一个的scrolTop
const rt = [curHeight]
oldArr.forEach((item) => {
curHeight += item.height
// 每一次计算后端的scrollTop
rt.push(curHeight)
})
state.transformedData = rt
}
}你好,有点不太明白,为啥这里的列表项中,一定要有一个高度item.height?
实际场景我们传入的列表数组,不一定都有一个高度吧
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