when and how best to give feedback to users about invalid entries in data they have provided.

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81
votes
17answers
16k views

What is best practice for designing form error messages?

I've seen quite a lot of research on form design, but so far, I haven't come across any studies on error message design best practices. The only piece of advice seems to be that each error should ...
57
votes
6answers
5k views

Preventing a user from pasting from the clipboard into a mandatory form field

In my online checkout process I, like many checkouts, have a field for the customer's email address along with a field to confirm the email address. They are both identical text boxes and accept email ...
6
votes
4answers
857 views

How do we validate our persona?

When we pursue our goal of ease of use for our users we sometimes use personas to test or guide our designs. And that’s all good – because it gives us a feeling of how a user would interpret the ...
22
votes
4answers
3k views

Character limits on fields - pros and cons and best practices?

Some of our form fields have character limits. We're debating whether we should reflect the current size of data entry, or to simply hard-limit and inhibit data entry beyond that size. In HTML, ...
7
votes
5answers
5k views

Disabling submit-button until the user has completed the form

How do you think about disabling the submit-button until the user has completed the form or the required fields? I find similar questions here on ux.se and somebody answered that the user will think ...
14
votes
9answers
9k views

friendly format for Phone Numbers

Currently on my website users are required to input their phone number in a very specific format (555-555-5555). If you forget the dashes it breaks. Does anyone have a good suggestions for how to be ...
12
votes
4answers
693 views

Text Field Validation vs Prevention

I've been having a debate (mostly with myself) over the best approach to deal with invalid input in text fields -- validation versus prevention. Taking a numeric text field as an example, is it ...
9
votes
1answer
270 views

Should I allow users to select a valid but disqualifying option?

I'm working on an application form where a user must be 18 years or older to apply. Should users be able to select years that would equate to them being younger than 18 or should I remove them from ...
8
votes
3answers
9k views

What should be maximum and minimum length of persons User Name & Password? [closed]

I am wondering because I am trying to make sure that person have right amount of spaces for their user name. User Name and Password are security measures and should not be easy to guess. I have fixed ...
31
votes
8answers
7k views

Is a confirm email address field still considered a best practice?

Having an input field to confirm an email address is pretty standard. However, I would like to know if using a confirm email address field still considered a best practice. The Email/Confirm email ...
21
votes
6answers
3k views

Disabled submit button on form vs allow submit then show errors?

We have a few different forms as part of a web-based medical application. These forms have quite a few fields - 10-20 depending on the form. Each has at least 5 or so required fields. We currently ...
20
votes
10answers
3k views

When client and server side validations occur, doesn't it make for a better UX to only do server validations?

I find a problem on the MVC4 project I am working on now, using Fluent Validation, in that some validations are delegated to the jQuery client side validation, while some, such as the NotNull rule for ...
15
votes
8answers
654 views

Is it ok to change the (US) address input field order in favor of a pre-fill feature?

I am working on an international site that requires the user to enter his postal address. I am wondering if it makes sense to have a slightly different order of input fields in favor of a time saving ...
12
votes
6answers
609 views

How would you create and validate personas for something that is not a person

There are a few questions here about personas, and research methods that you might use in order to create them, (some of which I've answered at length). Examples include: What research methods can I ...
7
votes
2answers
326 views

Validate on blur or keypress?

Is it better to give the user instant feedback that a field is invalid on keypress, or should you wait until they blur the field? The first option might annoy users if they are told their input is ...
7
votes
1answer
2k views

What are the best practices of designing a validation message on an iPhone App?

I am working on designing an iPhone app and I need to know which validation message style is the most recommended for the forms included. I don't prefer to use a pop up window i need something that ...
2
votes
1answer
2k views

iOS multi-step form and user input validation

I need to design a form that may consist of 3 or 4 steps, all of them requesting both mandatory and optional data. The overall form contains a lot of data inputs, so I thought it would be better to ...
20
votes
12answers
2k views

Should date validation allow “091011”?

Should I allow users to input the MMDDYY or MMDDYYYY format for a date? That is, should any date validation logic not trigger a validation error if the user just wants to put in the numbers without ...
4
votes
1answer
414 views

For non-special-character textbox, should I use inline validating message or block users from inputing invalid characters?

I have one textbox that means to allow no special characters. Now, I have to choose below approaches: Display inline validating message say something like "char * is not allowed" (A) or "Your input ...
2
votes
3answers
790 views

Amber outlined required field

As part of a system I'm currently working on users will need to fill out some large (40+ fields) forms, they will not always fill out all fields but are required to fill out a handful of core fields ...