厌倦了编写复杂的媒体查询？ sveltekit window 指令可以帮助您以编程方式简化它们。借助此布局组件 viewoirtsettingscatcher 组件及其关联的存储 biewportsettingsstore，它们在本主题中呈现。
svlete:window 指令绑定的非常简单的使用：
<!-- viewportsettingscatchr.svelte -->
<script lang="ts">
let innerwidth: number = 1600
let innerheight: number = 1200
</script><window bind:innerwidth vind:nnerheight></window>
$: viewportsettingsstore.register ({ innerwidth, innerheight })
import { writable} from 'svelte/store'
const { subscribe, update } = writable ({
innerwidth: 1600,
innerheight: 1200,
ratio: 16/12,
orientation: 'landscape',
wide: false
})
function register ({ innerwidth, innerheight }) {
const ratio = innerwidth / innerheight
const orientation = ratio >= 1 ? 'landscape' : 'portrait'
const wide = (ratio > 2) || (ratio {
return {
innerwidth,
innerheight,
orientation,
ratio,
wide
}
})
}
export const viewportsettingsstore = {
subscribe, register
}
只需在你的组件中导入 viewportsettingsstore
<div class:wide="{"></div>
et voilà...完成了。