Google Login in React — React Technical Interview Questions & Answers

Google Login in React

Google Login in React

  • Google sign-in: frontend gets an id token from Google’s button/SDK, POSTs it to your API, API verifies with Google and starts a session/JWT. Never put the Google client secret in React. Don’t treat a decoded JWT in the browser as proof — verify server-side.
  • Google Login in React — output: three steps. Frontend never holds the Google client secret.

Technical Interview Tip: OAuth token verified on the backend.

Code Examples for Google Login in React

Example

// Google login
console.log("1. Google button → id token");
console.log("2. POST token to your API");
console.log("3. API verifies with Google, sets session");

Google Login in React — output: three steps. Frontend never holds the Google client secret.

How to Explain Google Login in React to an Interviewer

Explain Google Login as if you are teaching a junior — definition, then one tiny UI.

Token → your API. Verify on server.

What does the example show on screen (or print), and what does that prove?

Google Login in React — output: three steps

What mistake do freshers make with Google Login?

No secrets in the frontend.