CODEWITHSUNDEEP
formshtmlvalidation
user1156691
user1156691

Reputation: 333

HTML5 validation

I wonder if HTML5 have any formvalidation for dual entry (write 2 identical password) and can you write own exceptions?

Thanx in advance!

Upvotes: 16

Views: 22191

Answers (6)

FuzzyJulz
FuzzyJulz

Reputation: 2874

Another option is to use http://jqueryvalidation.org/validate/, if you don't mind using Jquery to do your dirty work.

Check out http://jqueryvalidation.org/equalTo-method

<form id="myform">
  <label for="password">Password</label>
  <input id="password" name="password" />
  <br/>
  <label for="password_again">Again</label>
  <input class="left" id="password_again" name="password_again" />
  <br>
  <input type="submit" value="Validate!">
</form>

<script>
  $( "#myform" ).validate({
    rules: {
      password: "required",
      password_again: {
        equalTo: "#password"
      }
    }
  });
</script>

You can also write more complicated methods if required: http://jqueryvalidation.org/category/plugin/

Upvotes: 0

AeJey
AeJey

Reputation: 1457

I think this is what you are looking for.

<p>Password: <input type="password" required pattern="(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,}" name="pwd1" onchange="
  this.setCustomValidity(this.validity.patternMismatch ? 'Password must contain at least 6 characters, including UPPER/lowercase and numbers' : '');
  if(this.checkValidity()) form.pwd2.pattern = this.value;
"></p>
<p>Confirm Password: <input type="password" required pattern="(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,}" name="pwd2" onchange="
  this.setCustomValidity(this.validity.patternMismatch ? 'Please enter the same Password as above' : '');
"></p>

This will do the password and retype password fields validation.

Upvotes: 0

pgee70
pgee70

Reputation: 3974

Thanks Kicker, that was really useful.

I extended it a little to make the password and password confirm inputs to be invalid as soon as typing in the input started.

var password = document.querySelector(' input[name=usr_password]');
var passwordConfirm = document.querySelector(' input[name=usr_password_confirm]');
if (password && passwordConfirm)
{
    [].forEach.call([password, passwordConfirm], function(el) {
        el.addEventListener('input', function() {
            if ( el.validity.patternMismatch === false) {
                if ( password.value === passwordConfirm.value ) {
                    try{
                        password.setCustomValidity('');
                        passwordConfirm.setCustomValidity('');

                    }
                    catch(e){}
                }
                else {
                    password.setCustomValidity("The two passwords do not match");
                }
            }
            if ((password.checkValidity() && passwordConfirm.checkValidity()) === false)
            {
                password.setCustomValidity("The two passwords do not match, and they don't comply with the password rules.");
                passwordConfirm.setCustomValidity("The two passwords do not match, and they don't comply with the password rules.");
            }
            else
            {
                password.setCustomValidity('');
                passwordConfirm.setCustomValidity('');

            }
        }, false)
    });
}

Upvotes: 0

Mimo
Mimo

Reputation: 6075

I had a similar problem, and to solve it using the HTML5 api I did this: setted a pattern for the password to contain at least eight letters and a number. Then to make them matching I did:

    var password = document.querySelector('#password'),
        passwordConfirm = document.querySelector('#password_confirm');

    [].forEach.call([password, passwordConfirm], function(el) {
        el.addEventListener('input', function() {
            if (!el.validity.patternMismatch) {
                if ( password.value === passwordConfirm.value ) {
                    try{password.setCustomValidity('')}catch(e){}
                } else {
                    password.setCustomValidity("Password and password confirm doesn\'t match")
                }
            }
        }, false)
    });

where with el.validity.patternMismatch check for the pattern validity first and then check for the validity of the two. Here is my password input with the pattern.

<input type="password" pattern="^((?=.*(\d|\W))(?=.*[a-zA-Z]).{8,})$" id="password" />

Upvotes: 2

Richard Żak
Richard Żak

Reputation: 813

If you want something a bit nicer and HTML5-utilising, try this: http://www.html5rocks.com/en/tutorials/forms/html5forms/

<label>Password:</label>
<input type="password" id="password" name="password">
<label>Confirm Password:</label>
<input type="password" id="passwordconf" name="passwordconf" oninput="check(this)">
<script language='javascript' type='text/javascript'>
function check(input) {
    if (input.value != document.getElementById('password').value) {
        input.setCustomValidity('The two passwords must match.');
    } else {
        // input is valid -- reset the error message
        input.setCustomValidity('');
   }
}
</script>

Make it fancy by adding this to your CSS (below). It puts a red border around the offending input fields when they fail HTML5 validation.

:invalid {
     border: 2px solid #ff0000;
}

All done. You should still use an alert() or server-side validation to ensure that the user inputs both passwords correctly. Don't rely on client-side anything.

Upvotes: 24

Anton
Anton

Reputation: 1515

I'm quite sure that's not possible. Also, it can be easily covered by javascript so why not use that instead?

This works perfectly well:

<script language="javascript"> 
function checkPassword() { 
    if (document.pwForm.pw1.value != document.pwForm.pw2.value) { 
        alert ('The passwords do not match!');
        return false; 
    } 
} 
</script>
<form action="filename.ext" name="pwForm" method="GET/POST">
    <input type="password" name="pw1" value=""><br />
    <input type="password" name="pw2" value=""><br />
    <input type="Submit" name="CheckPassword" value="Check Passwords" onClick="return checkPassword();">
</form>

Upvotes: 1

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