Error identification
Telling a person which form field has a problem and what to do about it, in text, next to the field.
Error identification means that when a form is submitted with a mistake, the page says in text which field is wrong and, where possible, how to fix it: “Enter a date as MM/DD/YYYY,” not only a red border. The message is tied to the field in the code so a screen reader reads it with the field, and the person’s other answers are kept.
WCAG’s understandable principle has criteria for identifying errors, labeling fields, and suggesting corrections. People with cognitive disabilities, people using a screen reader, and people with color vision deficiency are the first to be stopped by a silent red outline. A clear error message helps every customer who fills in a form.
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