Comments (2)
貌似关键在于您的css编写,设置height和overflow:auto后scrollTop才有记录,才能保存到store。但还是不太懂,希望能说说原理,谢谢
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在 src/App.vue
中,有下面两行:
transition(name='fade', mode='out-in')
router-view
你可以试试将 transition
注释之后看看 scrollTop
的值是否会变化。
我也不是非常明白,猜测是加了 transition
之后,会对路由页面的生命周期产生影响,在 beforeDestroy
时拿到了有效的 scrollTop
;而不加时却一直为 0
。
overflow
属性的默认值为 visible
,auto
是在超过高度之后会出现一个 scrollbar
,只有在可以 scroll
的时候才能拿到 scrollTop
,一个不能 scroll
的元素,它的只能是 0
。
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