How can I share a token variable from my main page to iframe other than using a post message?

Question

I need to know how to share a variable in parent window to iframe.
My scenario is this,
I have 2 angular5 application say and . 和
B is loaded as an Iframe to A.
Authentication is done in A and I get an access token which i need to pass to B.
These are the things I tried.

1. postMessage sent the token but as it is async event, B doesn't wait for it.
2. Tried passing token as a header by making an AJAX get request with response type as blob but failed as only the index file is loaded not the angular chunks.

Answer 1

您可以将open B iframe与auth令牌一起用作查询参数：

<iframe src="yourURL?auth_token=ASDF1234"></iframe>