Rest API - Authentication and Authorization
How can you securely implement a token refresh mechanism in a single-page application (SPA) to avoid exposing refresh tokens to JavaScript?
How can you securely implement a token refresh mechanism in a single-page application (SPA) to avoid exposing refresh tokens to JavaScript?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Identify secure storage for refresh tokens
HttpOnly cookies prevent JavaScript access, reducing XSS risk.Step 2: Use silent refresh requests
Silent refresh via cookies allows token renewal without exposing tokens to scripts.Final Answer:
Store refresh tokens in HttpOnly cookies and use silent refresh requests -> Option CQuick Check:
HttpOnly cookies protect refresh tokens in SPAs [OK]
Quick Trick: Use HttpOnly cookies to protect refresh tokens [OK]
Common Mistakes:
- Storing tokens in localStorage (XSS risk)
- Exposing tokens in HTML or URLs
- Not protecting tokens from JavaScript
Master "Authentication and Authorization" in Rest API
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