Questions tagged [validation]

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

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30 views

What are some best practice specs for form validation when collecting customer information?

The question: Are there any best practices for what validation rules should be set for each customer information field on a form? I'm trying to create a spreadsheet that will specify how an author ...
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1answer
39 views

Success feedback for debounce updates

When creating a form that updates automatically after a short debounce time (thus without a save button), is it best to provide a visual feedback if the update was saved successfully and in case of an ...
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1answer
115 views

Prevent users from entering higher values than expected

Biz case: Allow users to configure policies to ensure critical application traffic is not dropped when a link is at max capacity. Use case: Traffic from head office to branch 1 is at max capacity. ...
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0answers
24 views

Behavior of two checkboxes where one must be selected [duplicate]

In a report settings area I am using 2 checkboxes where the user can select either or both, but one must be selected. We default to the most common option but if they unselect that one option and try ...
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1answer
126 views

Postal address validation - special characters

We are currently looking at adding validation to our form that enables users to enter an address manually if they don't/can't/won't use the postcode lookup software 99% of our addresses will be UK but ...
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3answers
77 views

Good UX for validating both phone and email

A website requires users to validate their email – it's how the user receives their password creation link, and email is essential to several core workflows. There is now also a need to collect and ...
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3answers
81 views

Validate an email while this in the input field - when do you start?

I just signed up for a new online service, and when I typed my email address, from the moment I started typing until I had typed the second letter after of the TLD, next to the input field there was ...
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2answers
98 views

Is it OK for a form element to shift when a related error message appears? [duplicate]

When designing a form, should I design with enough space between the elements for potential errors? So that when displaying error messages, the form elements below the error message do not shift, ...
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1answer
53 views

How to ask user to affirm that a blank value is intended?

I have a form with several optional text fields, and a workflow in which a user might reasonably save a partially completed form and return to complete it later. I want to prevent errors where a user ...
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1answer
38 views

When should the valid visual cue be shown to the user on a pre-filled form field?

It makes sense to show a valid visual cue (eg: green border, green check, etc) when a user is filling a form field and the data is considered valid. What if the user opened the form with pre-filled ...
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3answers
104 views

Validation for if all fields are required when an optional field has a value

I have a form that has an optional username/password input but when either the username or password has a value it causes them both to be required. Not sure how I should approach this? So far the ...
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3answers
112 views

How to state valid characters are alphanumeric and 'all keyboard symbols'?

*Note: I'm using an inline validating message, where if a user enters a char that is not allowed a message is displayed (i.e. "Please only use...") I've seen this post about stating valid ...
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1answer
56 views

How to indicate that validation checks whole section of form?

In our app we have few views that use backend validation, that sometimes might take more that a second to response. What is more unique about it, is that validation is sent for whole section. For ...
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2answers
124 views

Best input validation approach for complex and busy screen

I have an extremely busy screen for a single page application that allows people to pick their own components and build a custom printed circuit board (following a template that we provide). Our ...
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3answers
514 views

How to indicate to user that a field is not optional, but that a blank value is considered valid input?

We have forms in our application with a number of strictly required fields (marked with red asterisk, will fail validation if left blank). There is also one field that can be submitted as blank - this ...
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8answers
5k views

Real-Time validation, Good or Bad UX

I have a signup form where I made a REAL-TIME validation when the user starts typing as you see in the picture. I don't know if this harms the user experience or no, and also I did not find a resource ...
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1answer
574 views

Should comboboxes/radio groups be marked "required" in a form?

Suppose you have a web form, with some fields being optional and some being required. One of these fields is a combobox or radio button group, for which a valid default option is pre-selected and it ...
2
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1answer
225 views

Input error icon and clear icon at the same time

In Material design documentation we see optional icons inside an input. What if I want to have a clear icon (3) and display an error icon (2) at the same time? Side by side?
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45 views

How do I best show the format that's allowed for an input?

I can restrict the input on the front-end to certain values or make it match a regex pattern, but the user might be confused about why they can't input certain values unless it's communicated to them ...
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3answers
432 views

Form validation when the field is optional

I am working on a form where the phone number is optional. What is the best practice regarding a validation mechanism that checks if it's a correct phone number (over 10 digits): No form of ...
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5answers
130 views

Validation without an explicit confirmation

I am currently working on an app. This app has some features that the user can unlock by entering a numeric code. I was considering putting an automatic validation as soon as the user types the last ...
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2answers
96 views

Forbid and deactivate alphanumeric keys in a form?

scenario: form validation I ask myself the question: in a special input form for postcode for example, in which only numbers (integer) are allowed. In a usability view I would say, you should be ...
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2answers
167 views

How indicate conditional required field in editable table?

In a form indicating which fields are required are often indicated by an asterisk (*). We have an editable table and I indicate a required column with aesthetics in the title of the column. The ...
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5answers
4k views

How would you ask the user if their drawn signature is similar to the ID card sign?

We have a flow where the user signs a contract drawing their signature with the finger. But it's very important that that finger signature is similar to the user's real signature printed in the ...
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1answer
53 views

Warning/ Information on top of a Modal

I want to give users a warning on a modal that changing one form field has implications on another form field. I am aware of 2 patterns that are used as shown here. I am seeking suggestions on what UI ...
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1answer
315 views

What is a good approach for warning user on leaving a modal or side flyout panel with unsaved changes?

The user is editing a form element on the RHS flyout panel and the editing is not completed. In the middle of the process, the user decides to undertake the following actions: Click outside the ...
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2answers
172 views

What should an error state for a number value be?

Let's say that there are different numbers presented to the user - money values ($1.50), percentage values (+25.53%), development values (+$3.50), etc. In case there is an error in retrieving one of ...
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2answers
100 views

What's the optimal number of digits for a verification text message?

This is regarding a validation process in an app. User has downloaded the app, within it they get asked to validate their account through a text message. So they have to check their messages, then ...
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1answer
117 views

What is the best way to validate a discount card online?

We are trying to figure out the best way to re-introduce a discount feature to our website. We have recently undergone a massive project implementing online sales to the site which has left us in a ...
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1answer
33 views

Communicating variable pricing in a form field?

Scenario I own a car rental shop and am setting up a fee schedule for when customers bring back a vehicle with signs of damage. Some damage has a defined price ie. a rear view mirror. Some damage is ...
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2answers
2k views

Valid to / Expiration date inclusive or exclusive

I have a form with a "Valid to" date field. This field represents the date in which something will expire. Should the "Valid to" date be inclusive or exclusive? E.g. Valid to = 04.02.2020. Should it ...
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1answer
146 views

Browsers ruin password UX with dropdown menus. How can I fix it?

FYI the image above was taken with autocomplete="new-password" As you can see, the dropdown is covering the error message (which ends in "letters and numbers" (plus a few other error messages). This ...
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1answer
59 views

Same form fields - two purposes/functions

Working on a project for adding new entry/entries to a table and/or viewing the table. We have required fields for adding a new entry. Only one of those fields is required for viewing. The ...
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1answer
369 views

How to provide validation feedback for multiple rows in a grid?

I'm designing a page that needs to let a user upload a spreadsheet with content to be imported into my database. I anticipate that some of these rows will contain data that's fine in Excel, but ...
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2answers
100 views

What's the best practice for screen navigation after invalid user input? [duplicate]

Consider an Angular app with many user inputs over screens A, B and C. Screen C needs valid inputs from A and B; B from A only; and A is independent. Suppose while on screen B the user enters invalid ...
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2answers
29 views

Diagnostics Report vs Form Validation when results are already known?

Context: I'm working on a software where the user can add specific external devices by using their IP and various other settings. These settings need to be entered correctly using a form and if ...
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3answers
112 views

validating input widgets

[This may be a well-worn old question -- apologies if so, but I have no idea how to search for it.] First, the background. (This is not the question yet.) Suppose I've got a GUI with an input ...
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1answer
290 views

When should an input validation border change?

When I was working on validation just now, I came up with a couple of questions with regard to validation. When should an input border's color change? When should it turn from (a default or) no color ...
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1answer
82 views

Form input - Follow expected sequence or offer field validation?

Validation opposed to expectations My team proposed to change the usual sequence of an address form. They want to put the country before the other address fields so they can validate the following ...
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2answers
156 views

When and how present a warning message when fields are not valid anymore?

I am working on a web app in which admin users can create forms, and editor users use those to create content. Admin can edit a form previously created and add warning validation based on specific ...
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6answers
102 views

Validation Tribulation - Multiple Simultaneous Meanings for the Word 'Cancel'

I've confused myself with a bunch of different Cancel buttons. In this scenario, the user initiates the "Document Packer", and starts to add items to their new pack. Before saving their new pack, ...
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3answers
2k views

When should the error state on an input field disappear?

I've seen two types of behaviour circulating; one where the error state disappears as soon as you start typing a new input (so when the input field is in focus), and one where it stays until the input ...
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1answer
65 views

Validation of a text file: how to best show the inline editor?

I'm making an app that validates a text file and then shows the errors associated with it. Currently all errors are listed as rows. I'd like to make it easy to correct the errors in the text file so ...
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3answers
150 views

Best practice for validating text input on mobile

I'm designing a mobile application where user can order groceries from different suppliers, each order could have a notes to the supplier. Due to different downstream systems used by different ...
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1answer
73 views

How to handle form validations when the Cancel button can lead into an incorrect state?

I'm designing a set of screens where the user inputs certain data on Screen #1, Screen #2, Screen #3, etc. At the end of their journey they're presented with a final review screen, where the user can ...
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1answer
145 views

Handling error messages on mobile when there are many fields

I am designing a signup form that has the following fields in it: Username Email Password Confirm Password Where did you hear about us? I have to show validation errors in these fields. There are ...
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2answers
76 views

Is it okay to save data only when user leaving screen?

I'm designing an app that controls a connected object. In one of the screens of the app, the user can activate or disable a nightlight and set the hours of lightning (e.g. 8pm - 7am). In the first ...
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2answers
803 views

Input validation for login page

We have a password input for both our login and signup pages. As the user types their password on the signup page, they will see something resembling the following: Note: Our password input doesn't ...
0
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1answer
546 views

Prevent users from entering honorifics (Mr. / Mrs. / Ms.) in the First Name field

We have a high-throughput User Info intake form that get thousands of submissions everyday. The form, among other fields, has fields for First Name and Last Name. The form text is translated to the ...
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3answers
423 views

How to encourage the user to check details before submission

I'm upgrading a legacy financial application which requires users to re-enter their password before a transaction is submitted. I need to remove the password check since I'm migrating users to a new ...

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