How to pass credentials to iframe using javascript?

@samara 

You can pass credentials to an iframe by setting the src attribute of the iframe to a URL that includes the username and password in the following format:

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var username = 'myUsername';
var password = 'myPassword';
var iframe = document.getElementById('myIframe');

iframe.src = 'https://' + username + ':' + password + '@example.com';

Please note that passing credentials in this way may not be secure, as the username and password can be easily seen in the browser's address bar. It is recommended to use more secure methods such as server-side authentication to protect sensitive information.