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WCAG: 4.1.2: Buttons must have discernible text
Buttons must have discernible text that clearly describes the destination, purpose, function, or action for screen reader users.
input-button-namerule separates functionality from the
button-namerule to ensure that input buttons have discernible text; advise relevant to input button names was incorrect for button elements.
Screen reader users are not able to discern the purpose of
buttonthat has no accessible name.
Screen reader users cannot understand the purpose of an image without a discernable and accessible textual name. A title for an image may provide only advisory information about the image itself. Unnamed actionable graphic images such as buttons have no clear description of the destination, purpose, function or action for the non-text content when it is intended to be used as a control.