Svelte基础
Advanced Svelte
Advanced reactivity
Motion
Advanced bindings
Advanced transitions
Context API
Special elements
<script module>
Next steps
Basic SvelteKit
Introduction
Routing
Loading data
Headers and cookies
Shared modules
API routes
$app/state
Errors and redirects
Advanced SvelteKit
Page options
Link options
Advanced routing
Advanced loading
Environment variables
Conclusion
Some environment variables can be safely exposed to the browser. These are distinguished from private environment variables with a PUBLIC_ prefix.
Add values to the two public environment variables in .env:
PUBLIC_THEME_BACKGROUND="steelblue"
PUBLIC_THEME_FOREGROUND="bisque"Then, import them into src/routes/+page.svelte:
src/routes/+page
<script>
const PUBLIC_THEME_BACKGROUND = 'white';
const PUBLIC_THEME_FOREGROUND = 'black';
import {
PUBLIC_THEME_BACKGROUND,
PUBLIC_THEME_FOREGROUND
} from '$env/static/public';
</script><script lang="ts">
const PUBLIC_THEME_BACKGROUND = 'white';
const PUBLIC_THEME_FOREGROUND = 'black';
import {
PUBLIC_THEME_BACKGROUND,
PUBLIC_THEME_FOREGROUND
} from '$env/static/public';
</script>previous next
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<script>
const PUBLIC_THEME_BACKGROUND = 'white';
const PUBLIC_THEME_FOREGROUND = 'black';
</script>
<main
style:background={PUBLIC_THEME_BACKGROUND} style:color={PUBLIC_THEME_FOREGROUND}>
{PUBLIC_THEME_FOREGROUND} on {PUBLIC_THEME_BACKGROUND}</main>
<style>
main {position: fixed;
display: flex;
align-items: center;
justify-content: center;
left: 0;
top: 0;
width: 100%;
height: 100%;
font-size: 10vmin;
}
</style>