Only allow letters in a text field

Question

I'd like to know if it's possible to only allow a letter input in a text field in HTML (the opposite to <input type="number">). If it isn't, what would be the best way to detect when an user inputs a non-letter character (spaces and special characters are also forbidden), so I can alert a message?

Answer 1

Just set input tag to
<input type="text" pattern="[A-Za-z]*" title="Letters only"/>

https://code.sololearn.com/W5hRLPzw65Io/?ref=app

Answer 2

Just use the 'text' type.

<input type="text">

https://www.w3schools.com/tags/att_input_type.asp

button Defines a clickable button
checkbox Defines a checkbox
color Defines a color picker
date Defines a date control (year, month, day (no time))
datetime-local Defines a date and time control
email Defines a field for an e-mail address
file Defines a file-select field and a "Browse" button (for file uploads)
hidden Defines a hidden input field
image Defines an image as the submit button
month Defines a month and year control (no timezone)
number Defines a field for entering a number
password Defines a password field
radio Defines a radio button
range Defines a range control (like a slider control)
reset Defines a reset button
search Defines a text field for entering a search string
submit Defines a submit button
tel Defines a field for entering a telephone number
text Default. Defines a single-line text field
time Defines a control for entering a time (no timezone)
url Defines a field for entering a URL
week Defines a week and year control (no timezone)

Answer 3

I just read your question again. You're trying to focus on a SINGLE letter, and no special chars, right? If so, you'll want to use Javascript/jQuery to handle that from the client side. That's probably most efficient means.

Answer 4

Fata1 Err0r I can't use type="text", as it allows every kind of character as input. What I need is an input with any amount of letters, not numbers, not spaces, not special characters... Only letters. I supposed I had to use some JS, but I don't know how. Can you explain?