Online forms - Errors handling

Although attention is given to the design of forms, any risk of error can not be ruled out. For this reason, mechanisms for error handling must be established. In the case of partial seizures or wrong, the user should not be forced to reenter everything. However, the error messages are not always as explicit as they could be.

The error on an invalid input is not accompanied by the erasure of the contents of the field. The cursor should rather be positioned in the input field, waiting for a change. When the portion of erroneous data can be identified, this portion should be highlighted and changed directly by the user. The implementation of this recommendation will allow for quick and easy correction of mistakes.

Some things to keep in mind

• It is not enough to indicate required fields.
• It is not enough to verify that required fields were filled.
• Do not take into account the case of letters during seizures (except in special cases).
• It must be free from combinations of numbers and letters in the same field.
• We should not unnecessarily increase the users actions.
• We should not automatically move from one box to another user.

What you should do

Position the cursor in the first input field when displaying the form.
Match moving the cursor from one field to another field order. A vertical arrangement is preferable to a horizontal arrangement.
To validate a limited number of fields, such as a login and password, the validation should be done directly with the enter key without clicking on the button mandatory validation that avoids using the mouse.
Travel front and rear of the cursor from one field to another within the same field should be allowed. The areas of the screen that are not aimed at the seizure must be protected.
When the inputs are defined, the field must be submitted in the form of menus "pop-up or pulldown.