ARIA: command role

The command role defines a widget that performs an action but does not receive input data.

NOTE: The command role is an abstract role. It is included here for completeness of documentation. It should not be used by web authors.

Description

A command is form of widget that performs an action but does not receive input data. It is a superclass for the widget roles button, link, and menuitem

Best Practices

Do not use.

HTTP: Hypertext Transfer Protocol

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Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz

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Reason: CORS disabled

Reason: CORS request external redirect not allowed

Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers

Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods

Reason: Did not find method in CORS header 'Access-Control-Allow-Methods

Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials

Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channel

Reason: CORS header 'Access-Control-Allow-Origin' missing

Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed

Reason: Credential is not supported if the CORS header 'Access-Control-Allow-Origin' is '*

Reason: CORS header 'Origin' cannot be added

Reason: CORS preflight channel did not succeed

Reason: CORS request not HTTP

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Content Security Policy: The page's settings blocked the loading of a resource: xyz

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Connection header