Need to implement SSO using OKTA and SAML in Angular 6 app

I need to implement Single Sign On (SSO) using SAML with OKTA signin. I have Angular 6 app as front-end and need to configure SAML settings in angular app to redirect to OKTA login page and authenticate user using SAML. I am suggested to use HTTP POST of SAML and validate SAML response. But I am unable to make HTTP POST SAML request/response from Angular app. Need help on SAML request and response in Angular, sample example or code to get idea on implementation. Also, I need to implement using only SAML and not using OpenID OAuth, which almost every article on forums suggest. Please suggest.

Haven’t tried doing that personally, but maybe this can help you get started … https://github.com/authenio/react-samlify
https://www.codeproject.com/Articles/1248145/How-to-use-SAML-in-an-Angular-JS-Single-Page-Appli