我们有以下方法可以知道页面是否在sveltekit中加载:
import { navigating } from $app/stores
它在苗条(即没有苗条)中的等价物是什么?
或
如何在前端实现此功能。
我们有以下方法可以知道页面是否在sveltekit中加载:
import { navigating } from $app/stores
它在苗条(即没有苗条)中的等价物是什么?
或
如何在前端实现此功能。
在Svelte中没有“对等”,因为Svelte本身只是用于组件,没有路由。
您可以收听beforeunload
事件来了解我们何时开始导航。在此StackOverflow答案。
我们还可以通过在Svelte可读
存储中侦听事件来创建自己的导航
存储器。
您可以复制此代码块:
import { readable } from svelte/store ;
export const navigating = readable(false, (set) => {
// Make sure that window exists
if (typeof window === undefined ) return;
const navigatingStarted = () => {
// Notify subscribers that we are now navigating
set(true);
// If page hasn t unload event hasn t fired in 500ms, it s probably cancelled
let unloaded = false;
const confirmUnloaded = () => (unloaded = true);
window.addEventListener( unload , confirmUnloaded);
window.setTimeout(() => {
if (!unloaded) {
set(false);
window.removeEventListener( unload , confirmUnloaded);
}
}, 500);
};
window.addEventListener( beforeunload , navigatingStarted);
return () => window.removeEventListener( beforeunload , navigatingStarted);
});
然后这样使用:
<script>
import { navigating } from ./navigate-store
</script>
<p>Demo:</p>
<p>
{#if $navigating}
Navigating!
{:else}
Not navigating!
{/if}
</p>
您可以在Stacklitz中看到一个工作示例(从技术上讲,此演示在SveltKit应用程序中运行,但<;a/>;
超链接具有rel=”external“
,因此它们实际上并没有使用Svelt基特路由器)
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我们有以下方法可以知道页面是否在sveltekit中加载:
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