2.0 KiB
2.0 KiB
Back to 3 Understandable index
3.3.4 Error Prevention (Legal, Financial, Data)
- Level: AA
- Guideline: 3.3 Input Assistance
- Principle: 3 Understandable
What it is
For web pages that cause legal commitments or financial transactions for the user to occur, that modify or delete user-controllable data in data storage systems, or that submit user test responses, at least one of the following is true:
- Reversible: Submissions are reversible.
- Checked: Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.
- Confirmed: A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission.
How to test
- Check: Submissions are reversible.
- Check: Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.
- Check: A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission.
- Use the sufficient techniques below as acceptable methods when applicable.
Sufficient techniques (W3C)
- G164: Providing a stated time within which an online request (or transaction) may be amended or canceled by the user after making the request
- G98: Providing the ability for the user to review and correct answers before submitting
- G155: Providing a checkbox in addition to a submit button
- G99: Providing the ability to recover deleted information
- G168: Requesting confirmation to continue with selected action
Advisory techniques (W3C)
- SCR18: Providing client-side validation and alert
- G199: Providing success feedback when data is submitted successfully