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

• Modern browser with ES2017+ support
• npm or yarn (or use CDN for no-bundler apps)
• Auth0 account with a Single Page Application configured
• If you don't have Auth0 set up, see auth0-quickstart

When NOT to Use