HTML5 Forms OF DOOM

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FORMS OF DOOM

Attributes
Input Types
JavaScript API
Styling

BEHOLD THE POWERS OF HTML5

Placeholder
Required
Autofocus
Autocomplete
Spellcheck
Pattern

ATTRIBUTES TO RULE THEM ALL

• Disappears as the user types.
• NOT a replacement for a proper label. I will hunt you down.

• Validated by supporting browsers.

• Gives the first field in the source order with autofocus focus on page
load.
• Will scroll the page to give it focus.
• Not supported by mobile browsers.

• Suggests to browsers that they not auto fill that form field.
• Suggested for use on form fields the browser will probably auto fill
wrong. For example: Name when you want a pet’s name.

• Also accepts “true”.
• Tells the browser explicitly whether or not to spell check the field.
• Good for fields where the input is expected to be interpreted as a
misspelling.

• Matches a regular expression.
• Only validates if something has been entered.
• Error message is non-specific. Some browsers will use title attribute to
explain.
• Use the title attribute to add additional help text. Please.
• This works with all the input types.

CODING IMPRESSIVE.
Download the sample form: stephaniehobson.ca/html5forms

Add:
• Placeholder
• Required
• Autofocus
•Autocomplete (to the nemesis name field – wouldn’t want to submit your
own name as your nemesis, that’d be awkward)
•Spellcheck (to the nemesis name field)
• Pattern

Email
URL
Tel
Search
Number
Range
Date
Datalist

INPUT TYPES AND YOUR LITTLE
DOG TOO

• For email addresses.
• Gives email keyboard.
• Is validated as an email address.
•Special attribute:
• multiple (enables acceptance of a comma separated list of addresses)

• For urls.
• Gives url keyboard.
• Is validated as a url – very loosely.
• URL validation is actually really complicated.
• Use in combination with pattern if you want something specific.

• For phone numbers.
• Gives number pad.
• Very loosely validated.
• Handy since the nice big number pad is handy for inputting any number so
you can use it for anything else you like. thisisourstop.com uses it for
bus stop number.
• Use with pattern if you have
something specific in mind.

• No standard functionality.
•Remembered search terms on some.
• Rounded corners on some.
• Over ride with -webkit-appearance:none;
• Little grey clear field “x” on some.

• For numbers. Also called a “spinbox”.
• Gives number keypad.
• Validated as a number (one day).
•Special attributes:
• min
• max
• step
• Special pseudo classes:
• :in-range { }
• :out-of-range { }

• For numbers. Also called a “slider”.
• Exact number not displayed to user.
• Special attributes:
• min
• max
• step
• Special pseudo classes:
• :in-range { }
• :out-of-range { }

• On focus displays a date picker.
• Configurable formats:
• type=“date”
• type=“datetime”
• type=“datetime-local”
• type=“month”
• type=“week”
• type=“time”
• Support for everything except
type=“date” is spotty.

• Text box with filtered list of suggestions.
• Replaces a select box with an “other
please specify” option.
• Entire list isn’t usually visible, appears as
user types, filtered by what they’ve
entered.
• Backwards compatible: http://goo.gl/GhfEl

CODING MOST IMPRESSIVE.
Using the same form change:

• Birth/death date to date
• Army size to range
• Nemesis to datalist (Use Jeremy Keiths’ backwards compatible version
http://goo.gl/GhfEl)

Compatibility Tables
•http://wufoo.com/html5/ In depth and up to date.
Fallbacks
• All new inputs fall back to text automatically. Isn’t that awesome!
• That means if you have a form with no validation today, you have have
validation for modern browsers with small changes! So cool! You should
run home and do this.
• Backwards compatible datalist: http://adactio.com/journal/4272/
Shims
•https://github.com/ryanseddon/H5F
• In early 2012 not all played nice with jQuery form validation plug-ins.
Not sure if this has changed.

SUPPORT DO YOU KNOW HOW I
GOT THESE SCARS?

FormData
Constraint Validation
A Few More Elements

JAVASCRIPT API WITH FRICKIN
LASER BEAMS

• Create and send a virtual form. No need to create DOM elements.

varformData = new FormData();
formData.append(“weapon”, “Death Ray”);
formData.append(“cybernetics”, “eye, left arm”)

varxhr = new XMLHttpRequest();
xhr.open("POST", "http://goci.com/submission.php");
xhr.send(formData);

• Can also be used to append data to an existing form before sending.

varformElement = document.getElementById(”myForm");
varformData = new FormData(formElement);
formData.append(”Sidekick", "Harley Quinn,");

varxhr = new XMLHttpRequest();
xhr.open("POST", "http://goci.com/submission.php");
xhr.send(formData);

• Form elements have an object you can access with several attributes
that will tell you if and how a form field is failing validation.

el.validity.valid
el.validity.valueMissing
el.validity.typeMismatch
el.validity.patternMismatch
el.validity.tooLong
el.validity.rangeUnderflow and rangeOverflow
el.validity.stepMismatch
el.validity.customError

• Yes, custom errors! You can create your own errors using their API.

• Create a custom error message. Like, checking two email addresses match.

<input type="email" id="email_addr" name="email_addr">
<input type="email" id="email_addr_repeat" name="email_addr_repeat"
oninput="check(this)">

<script>
function check(input) {
if (input.value != document.getElementById('email_addr').value) {
input.setCustomValidity('The two email addresses must match.');
} else {
// input is valid -- reset the error message
input.setCustomValidity('');
}
}
</script>

CODING
Add the code to check the email address (I hate these but it *is* an evil
application form after all).

You can copy and paste the code from here:
http://www.html5rocks.com/en/tutorials/forms/html5forms/

:required
:optional
:valid
:invalid
:default

[attribute]

STYLING CUSTOM BABY SEAL
LEATHER BOOTS ANYONE?

Basic Introductions
•http://diveintohtml5.info/forms.html
•http://24ways.org/2009/have-a-field-day-with-html5-forms/
•http://www.html5rocks.com/en/tutorials/forms/html5forms/
•http://www.alistapart.com/articles/forward-thinking-form-validation/
CSS
•http://html5doctor.com/css3-pseudo-classes-and-html5-forms/
Compatibility Specifics
• http://wufoo.com/html5/
• http://miketaylr.com/code/input-type-attr.html

RESOURCES I SEE YOU BROUGHT A
FRIEND.

HTML5 Forms OF DOOM

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