Svelte参考

svelte/reactivity/window

此模块导出各种 window 值的反应版本，每个版本都有一个反应 current 属性，你可以在反应上下文（模板、deriveds 和 effects）中引用它，而无需使用 <svelte:window> 绑定或手动创建自己的事件监听器。

¥This module exports reactive versions of various window values, each of which has a reactive current property that you can reference in reactive contexts (templates, deriveds and effects) without using <svelte:window> bindings or manually creating your own event listeners.

<script>
	import { innerWidth, innerHeight } from 'svelte/reactivity/window';
</script>

<p>{innerWidth.current}x{innerHeight.current}</p>

import {
	const devicePixelRatio: {
    readonly current: number | undefined;
}devicePixelRatio.current is a reactive view of window.devicePixelRatio. On the server it is undefined.
Note that behaviour differs between browsers — on Chrome it will respond to the current zoom level,
on Firefox and Safari it won’t.
@since5.11.0devicePixelRatio,
	const innerHeight: ReactiveValue<number | undefined>innerHeight.current is a reactive view of window.innerHeight. On the server it is undefined.
@since5.11.0innerHeight,
	const innerWidth: ReactiveValue<number | undefined>innerWidth.current is a reactive view of window.innerWidth. On the server it is undefined.
@since5.11.0innerWidth,
	const online: ReactiveValue<boolean | undefined>online.current is a reactive view of navigator.onLine. On the server it is undefined.
@since5.11.0online,
	const outerHeight: ReactiveValue<number | undefined>outerHeight.current is a reactive view of window.outerHeight. On the server it is undefined.
@since5.11.0outerHeight,
	const outerWidth: ReactiveValue<number | undefined>outerWidth.current is a reactive view of window.outerWidth. On the server it is undefined.
@since5.11.0outerWidth,
	const screenLeft: ReactiveValue<number | undefined>screenLeft.current is a reactive view of window.screenLeft. It is updated inside a requestAnimationFrame callback. On the server it is undefined.
@since5.11.0screenLeft,
	const screenTop: ReactiveValue<number | undefined>screenTop.current is a reactive view of window.screenTop. It is updated inside a requestAnimationFrame callback. On the server it is undefined.
@since5.11.0screenTop,
	const scrollX: ReactiveValue<number | undefined>scrollX.current is a reactive view of window.scrollX. On the server it is undefined.
@since5.11.0scrollX,
	const scrollY: ReactiveValue<number | undefined>scrollY.current is a reactive view of window.scrollY. On the server it is undefined.
@since5.11.0scrollY
} from 'svelte/reactivity/window';

devicePixelRatio

devicePixelRatio.current 是 window.devicePixelRatio 的反应式视图。在服务器上它是 undefined。请注意，不同浏览器的行为不同 - 在 Chrome 上，它将响应当前缩放级别，而在 Firefox 和 Safari 上则不会。

¥devicePixelRatio.current is a reactive view of window.devicePixelRatio. On the server it is undefined. Note that behaviour differs between browsers — on Chrome it will respond to the current zoom level, on Firefox and Safari it won’t.

const devicePixelRatio: {
	get current(): number | undefined;
};

innerHeight

innerHeight.current 是 window.innerHeight 的反应式视图。在服务器上它是 undefined。

¥innerHeight.current is a reactive view of window.innerHeight. On the server it is undefined.

const innerHeight: ReactiveValue<number | undefined>;

innerWidth

innerWidth.current 是 window.innerWidth 的反应式视图。在服务器上它是 undefined。

¥innerWidth.current is a reactive view of window.innerWidth. On the server it is undefined.

const innerWidth: ReactiveValue<number | undefined>;

online

online.current 是 navigator.onLine 的反应式视图。在服务器上它是 undefined。

¥online.current is a reactive view of navigator.onLine. On the server it is undefined.

const online: ReactiveValue<boolean | undefined>;

outerHeight

outerHeight.current 是 window.outerHeight 的反应式视图。在服务器上它是 undefined。

¥outerHeight.current is a reactive view of window.outerHeight. On the server it is undefined.

const outerHeight: ReactiveValue<number | undefined>;

outerWidth

outerWidth.current 是 window.outerWidth 的反应式视图。在服务器上它是 undefined。

¥outerWidth.current is a reactive view of window.outerWidth. On the server it is undefined.

const outerWidth: ReactiveValue<number | undefined>;

screenLeft

screenLeft.current 是 window.screenLeft 的反应式视图。它在 requestAnimationFrame 回调中更新。在服务器上它是 undefined。

¥screenLeft.current is a reactive view of window.screenLeft. It is updated inside a requestAnimationFrame callback. On the server it is undefined.

const screenLeft: ReactiveValue<number | undefined>;

screenTop

screenTop.current 是 window.screenTop 的反应式视图。它在 requestAnimationFrame 回调中更新。在服务器上它是 undefined。

¥screenTop.current is a reactive view of window.screenTop. It is updated inside a requestAnimationFrame callback. On the server it is undefined.

const screenTop: ReactiveValue<number | undefined>;

scrollX

scrollX.current 是 window.scrollX 的反应式视图。在服务器上它是 undefined。

¥scrollX.current is a reactive view of window.scrollX. On the server it is undefined.

const scrollX: ReactiveValue<number | undefined>;

scrollY

scrollY.current 是 window.scrollY 的反应式视图。在服务器上它是 undefined。

¥scrollY.current is a reactive view of window.scrollY. On the server it is undefined.

const scrollY: ReactiveValue<number | undefined>;

svelte/motion svelte/reactivity