Basic authentication with header - Javascript XMLHttpRequest
问题 I am trying to access Adyen test API that requires basic authentication credentials. https://docs.adyen.com/developers/ecommerce-integration My credentials work when accessing the API page through browser. But I get an 401 Unauthorized response when trying to access the API with XMLHttpRequest POST request. Javascript Code var url = "https://pal-test.adyen.com/pal/servlet/Payment/v25/authorise"; var username = "ws@Company.CompanyName"; var password = "J}5fJ6+?e6&lh/Zb0>r5y2W5t"; var