开箱即用,TanStack Router 支持 hash 滚动和页面顶部滚动,无需任何额外配置。
默认情况下,滚动到顶部模仿浏览器的行为,这意味着成功导航后,只有 window 本身会滚动到顶部。然而,对于许多应用来说,由于高级布局,主要的滚动区域通常是嵌套的 div 或类似元素。如果您希望 TanStack Router 也为您滚动这些主要的滚动区域,您可以添加选择器,使用 routerOptions.scrollToTopSelectors 来定位它们
const router = createRouter({
scrollToTopSelectors: ['#main-scrollable-area'],
})
const router = createRouter({
scrollToTopSelectors: ['#main-scrollable-area'],
})
这些选择器是 window 之外的补充处理,window 当前无法禁用。
滚动位置恢复是在用户导航回页面时恢复页面滚动位置的过程。这通常是基于标准 HTML 网站的内置功能,但对于 SPA 应用程序来说可能难以复制,因为
不仅如此,应用程序通常在应用内有多个滚动区域,而不仅仅是 body。例如,聊天应用程序可能有可滚动的侧边栏和可滚动的聊天区域。在这种情况下,您可能希望独立地恢复这两个区域的滚动位置。
为了缓解这个问题,TanStack Router 提供了滚动位置恢复组件和 Hook,用于处理监控、缓存和恢复滚动位置的过程。
它通过以下方式实现:
这听起来可能很多,但对您来说,它非常简单,如下所示:
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
scrollRestoration: true,
})
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
scrollRestoration: true,
})
注意
<ScrollRestoration /> 组件仍然有效,但已被弃用。
与 Remix 自己的滚动位置恢复 API 保持一致,您还可以使用 getKey 选项自定义用于缓存给定滚动区域滚动位置的 key。例如,这可以用于强制使用相同的滚动位置,而不管用户的浏览器历史记录如何。
getKey 选项接收来自 TanStack Router 的相关 Location 状态,并期望您返回一个字符串来唯一标识该状态的滚动测量值。
默认的 getKey 是 (location) => location.state.key!,其中 key 是为历史记录中每个条目生成的唯一键。
您可以将滚动同步到 pathname
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
getScrollRestorationKey: (location) => location.pathname,
})
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
getScrollRestorationKey: (location) => location.pathname,
})
您可以有条件地仅同步某些路径,然后对其余路径使用 key
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
getScrollRestorationKey: (location) => {
const paths = ['/', '/chat']
return paths.includes(location.pathname)
? location.pathname
: location.state.key!
},
})
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
getScrollRestorationKey: (location) => {
const paths = ['/', '/chat']
return paths.includes(location.pathname)
? location.pathname
: location.state.key!
},
})
有时您可能希望阻止滚动位置恢复发生。为此,您可以利用以下 API 上提供的 resetScroll 选项
当 resetScroll 设置为 false 时,下次导航的滚动位置将不会被恢复(如果导航到堆栈中现有的历史记录事件),也不会重置到顶部(如果是堆栈中新的历史记录事件)。
在大多数情况下,您不需要做任何特殊的事情即可使滚动位置恢复工作。但是,在某些情况下,您可能需要手动控制滚动位置恢复。最常见的示例是虚拟化列表。
要手动控制整个浏览器窗口中虚拟化列表的滚动位置恢复
function Component() {
const scrollEntry = useElementScrollRestoration({
getElement: () => window,
})
// Let's use TanStack Virtual to virtualize some content!
const virtualizer = useWindowVirtualizer({
count: 10000,
estimateSize: () => 100,
// We pass the scrollY from the scroll restoration entry to the virtualizer
// as the initial offset
initialOffset: scrollEntry?.scrollY,
})
return (
<div>
{virtualizer.getVirtualItems().map(item => (
...
))}
</div>
)
}
function Component() {
const scrollEntry = useElementScrollRestoration({
getElement: () => window,
})
// Let's use TanStack Virtual to virtualize some content!
const virtualizer = useWindowVirtualizer({
count: 10000,
estimateSize: () => 100,
// We pass the scrollY from the scroll restoration entry to the virtualizer
// as the initial offset
initialOffset: scrollEntry?.scrollY,
})
return (
<div>
{virtualizer.getVirtualItems().map(item => (
...
))}
</div>
)
}
要手动控制特定元素的滚动位置恢复,您可以使用 useElementScrollRestoration Hook 和 data-scroll-restoration-id DOM 属性
function Component() {
// We need a unique ID for manual scroll restoration on a specific element
// It should be as unique as possible for this element across your app
const scrollRestorationId = 'myVirtualizedContent'
// We use that ID to get the scroll entry for this element
const scrollEntry = useElementScrollRestoration({
id: scrollRestorationId,
})
// Let's use TanStack Virtual to virtualize some content!
const virtualizerParentRef = React.useRef<HTMLDivElement>(null)
const virtualizer = useVirtualizer({
count: 10000,
getScrollElement: () => virtualizerParentRef.current,
estimateSize: () => 100,
// We pass the scrollY from the scroll restoration entry to the virtualizer
// as the initial offset
initialOffset: scrollEntry?.scrollY,
})
return (
<div
ref={virtualizerParentRef}
// We pass the scroll restoration ID to the element
// as a custom attribute that will get picked up by the
// scroll restoration watcher
data-scroll-restoration-id={scrollRestorationId}
className="flex-1 border rounded-lg overflow-auto relative"
>
...
</div>
)
}
function Component() {
// We need a unique ID for manual scroll restoration on a specific element
// It should be as unique as possible for this element across your app
const scrollRestorationId = 'myVirtualizedContent'
// We use that ID to get the scroll entry for this element
const scrollEntry = useElementScrollRestoration({
id: scrollRestorationId,
})
// Let's use TanStack Virtual to virtualize some content!
const virtualizerParentRef = React.useRef<HTMLDivElement>(null)
const virtualizer = useVirtualizer({
count: 10000,
getScrollElement: () => virtualizerParentRef.current,
estimateSize: () => 100,
// We pass the scrollY from the scroll restoration entry to the virtualizer
// as the initial offset
initialOffset: scrollEntry?.scrollY,
})
return (
<div
ref={virtualizerParentRef}
// We pass the scroll restoration ID to the element
// as a custom attribute that will get picked up by the
// scroll restoration watcher
data-scroll-restoration-id={scrollRestorationId}
className="flex-1 border rounded-lg overflow-auto relative"
>
...
</div>
)
}
要控制在页面之间导航时的滚动行为,您可以使用 scrollBehavior 选项。这允许您使页面之间的过渡变为瞬间完成,而不是平滑滚动。滚动位置恢复行为的全局配置与浏览器支持的选项相同,即 smooth、instant 和 auto(更多信息请参阅 MDN)。
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
scrollBehavior: 'instant',
})
import { createRouter } from '@tanstack/react-router'
const router = createRouter({
scrollBehavior: 'instant',
})
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