Hey for some reason when i use this(pattern="[A-Za-z]") in my input field nothing will be accepted?
When I enter "Ruben" in this field it just says "make sure the format complies with the requested format"?
Thank you for your help
The pattern matches exactly one character. Add a + quantifier after the character class to make it match one or more of those characters.
The reason is that [A-Za-z] matches single character, Ruben is 5 hars long.
You should use [A-Za-z]+ for pattern instead, which will accept one or more of letters.
You could also use anchors ^[A-Za-z]+$ to make sure input consists of only letters.
<form>
<div>
<label for="uname">enter test string </label>
<input type="text" id="uname" name="name" required size="45"
pattern="^[a-zA-Z]+$" title="enter test string">
<span class="validity"></span>
<p>Input must be at least one letter and ocnsist of only letters.</p>
</div>
<div>
<button>Submit</button>
</div>
</form>
Related
So I'm trying to make a form for my assignment, and I am using the pattern attribute in html so only certain characters are required to be typed on the text box. But for some reason, the form is saying using that I'm using an incorrect format even though I made my pattern attribute that way.
Here's an example of the code and a picture of the problem.
<form>
<label for="mnumber">Mobile Number:</label>
<input type="text" required id="mnumber" pattern="[0-9]"><br><br>
<input type="submit" value="submit">
</form>
You did write:
pattern="[0-9]"
You are asking for only one number. You just forget to add '+' to accept more than one number. I guess what you are searching for is this:
pattern="[0-9]+"
pattern="[0-9]"
allows for only a single number character to validate (and be submitted). If you want to allow more than one character, here's your options:
One or more numbers:
pattern="[0-9]+"
Zero or more numbers:
pattern="[0-9]*"
One to three numbers:
pattern="[0-9]{1,3}"
you just need to change type="text" to type="number"
Attempting to use a regex pattern for an HTML input element that limits the characters to 0-9, ",","-",".","$"
I have very little experience in regex and used the pattern=[0-9,.-$] on the input element and it does not work. Though I plan on studying regex intensely in the future, I need a little help on this for now. Thank you.
<form>
<input name="currency" pattern=[0-9,.-$]>
<button>Submit</button>
</form>
don't use regex, use native type="number" that will do job for you with no need for regex
coverage is almost full > https://caniuse.com/#feat=input-number
<form>
<input type="number" name="currency">
<button>Submit</button>
</form>
You have two problems.
- indicates a range, you already used it as such for 0-9. .-$ isn't a valid range. A validator would have highlighted this for you. You need to escape the -.
You are only matching one character. You need to match multiple so use something like + to mean one or more
<form>
<input name="currency" pattern="[0-9,.\-$]+">
<button>Submit</button>
</form>
Just trying to make a field that only accepts 8-digit numbers and every browser lets it pass with any number of digits.
<form>
<input type="number" pattern="[0-9]{8}" required>
<input type="submit">
</form>
I feel like I'm missing something really obvious here am not seeing the problem with my pattern.
Codepen: https://codepen.io/mavelo/pen/VVZvoP
<input type="number"> elements do not support use of the pattern attribute for making entered values conform to a specific regex pattern.
Source:
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/number#Pattern_validation
I have a page with some text fields and I would like to restrict user input, so I have used the html5 pattern attribute, like so:
<input name="team_name" type="text" pattern="[A-Za-z]{50}" value="<?php echo $team_name;?>">
This should allow me to enter only letters b/w Aa-Zz for a name, but when I try to enter a valid name, it still tells me to match the requested format.
What am I missing? How come it is always telling me that my input is invalid?
The rule [A-Za-z]{50} will make the name acceptable only when it contains exact 50 alphabets.
[A-Za-z]{10,50}
This will make the name minimum 10 and maximum 50 characters.
Update the expression according to your requirements.
Demo:
input:invalid {
color: red;
}
<form>
<input name="team_name" type="text" pattern="[A-Za-z]{10,50}" value="">
<br />
<input type="submit">
</form>
{50} in a regex pattern means exactly 50 characters. That's unlikely what you want.
If you want to restrict the input to maximum 50 characters, use the maxlength attribute.
<input name="team_name" type="text" pattern="[A-Za-z]+" maxlength="50">
As you can see in the following :
type="text" -> text validation happen.
pattern="[A-Za-z]{50}" -> only Aa - Zz alphabets are valid, character inputs are not valid. and string length should be equal to 50.
i have a contact form where I ask for ppls names. i tried to put some validation to make sure they only used letters "[A-Za-z]". if i type in 1 letter it goes to valid but then if i type any more letters it says invalid. is there something else i need to add to "[A-Za-z]"?
<div class="form-group">
<label class="col-xs-4 control-label" for="lname">Last Name</label>
<div class="col-xs-8">
<input id="lname" name="lname" type="text" placeholder="Your last name" data-trigger="manual" data-content="Can only contain letters!" class="name form-control" type="text" required pattern="[A-Za-z]">
</div>
</div>
The meaning of your pattern value is "only one character".
for using letters you can use pattern value as pattern="[A-Za-z]+". The meaning of + is 1 or more characters.
The attribute pattern="[A-Za-z]" means that the value must be a single letter. Add the + operator to allow repetition: pattern="[A-Za-z]+". The pattern attribute values have the same syntax as regular expressions in JavaScript.
On the other hand, you probably should not use pattern at all for a person’s name, unless you have a good reason to restrict them so that people are forced to enter their names as modified (e.g. omitting diacritic marks, omitting spaces, hyphens, and apostrophes, and transcribing characters that are not in the Latin alphabet).