Log in to your Zalo application with a Zalo account, using html and javascript. Return an access token if login is successful.

The code challenge and code verifier are generated using PKCE method

Demo: https://caohanh1502.github.io/Zalo-Login-JS

Note:

No server required so the option "Check secret key when calling api get access token" in the login settings need to be turned off.

How to:

• Go to Zalo Dev page: https://developers.zalo.me/apps
• Copy the app ID of your application and paste it into stringvalue.js
• Upload files to your web hosting, then verify the domain: https://developers.zalo.me/app/<Your_App_ID>/verify-domain
• Go to the login settings (https://developers.zalo.me/app/<Your_App_ID>/login) and set "Callback URL" to point to auth.html

Logout:

• Go to Zalo dev page: https://developers.zalo.me
• Logout (hover over your profile image at top right to see the option).

Credits:

Most of the codes are based on this post: https://nguyenphudung.com/huong-dan-lay-access-token-v4-qua-zalo-api-php