This is an early unpublished editor's draft; content is incomplete and subject to change.

Input constraints used

Core requirement

Field constraints and conditions (required line length, date format, password format, etc.) are available.

Methods

HTML: To programmatically indicate, use the pattern attribute or write the information in a label; to visually indicate, add the requirements to the page near the input.

Best Practices

The constraints remain persistent.

Tests

Procedure

For each input:

Confirm it has a visual information that describes the constraint.
Inspect the code and accessibility tree (when applicable) and confirm that the constraint is programmatically listed in the code and associated with the input.

Expected results

#1 and #2 are true.