Use when adding Auth0 login or token management to a Vanilla JS, Svelte, or framework-agnostic SPA. Integrates @auth0/auth0-spa-js — use when there is no framework-specific Auth0 SDK available.
Auth0 SPA JS Integration
Add authentication to any browser-based single-page application using @auth0/auth0-spa-js — the low-level Auth0 SDK for Vanilla JS, Svelte, SolidJS, and any SPA not using React, Angular, or Vue.
Agent instruction: Before providing SDK setup instructions, fetch the latest release version by running:
gh api repos/auth0/auth0-spa-js/releases/latest --jq '.tag_name'
Use the returned version in all dependency lines instead of any hardcoded version below. If the command fails, fall back to checking https://github.com/auth0/auth0-spa-js/releases.
Prerequisites
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Modern browser with ES2017+ support
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npm or yarn (or use CDN for no-bundler apps)
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Auth0 account with a Single Page Application configured
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If you don't have Auth0 set up, see auth0-quickstart
