Skip to main content

Home/ HTML5 development/ Group items tagged attributes

Rss Feed Group items tagged

Vernon Fowler

: The Input (Form Input) element - HTML | MDN - 0 views

  • A single-line text field for entering search strings.
    • Vernon Fowler
       
      On mobile devices with on-screen keyboards, the search input type sets the submit button text to "Search". On desktop devices, this should also enable submitting the form by pressing the Enter key?
  • Possible values are: off: The user must explicitly enter a value into this field for every use, or the document provides its own auto-completion method. The browser does not automatically complete the entry. on: The browser is allowed to automatically complete the value based on values that the user has entered during previous uses, however on does not provide any further information about what kind of data the user might be expected to enter. name: Full name. honorific-prefix: Prefix or title (e.g. "Mr.", "Ms.", "Dr.", "Mlle"). given-name: First name. additional-name: Middle name. family-name: Last name.
  • inputmode
    • Vernon Fowler
       
      Currently not supported in any browser. https://caniuse.com/#feat=input-inputmode
  • ...4 more annotations...
  • This attribute applies when the value of the type attribute is text, search, tel, url, email, or password, otherwise it is ignored.
  • minlength HTML5 If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the minimum number of characters (in Unicode code points) that the user can enter.
  • maxlength If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the maximum number of characters (in UTF-16 code units) that the user can enter.
  • autocorrect A Safari extension, the autocorrect attribute is a string which indicates whether or not to activate automatic correction while the user is editing this field. Permitted values are: on Enable automatic correction of typos, as well as processing of text substitutions if any are configured.
Vernon Fowler

HTML Standard - 0 views

  • The value of input elements whose type attributes are in the Text, Search, URL, or E-mail states and that are mutable (i.e. that do not have the readonly attribute specified and that are not disabled).The value of textarea elements that do not have a readonly attribute and that are not disabled.
    • Vernon Fowler
       
      Note the input types that we can set spellcheck="false" include: email url search text
  • Otherwise, if there is an ancestor element with a spellcheck content attribute that is not in the default state, then: if the nearest such ancestor's spellcheck content attribute is in the true state, then checking is enabled; otherwise, checking is disabled.
  • User agents should take into account the other semantics given in the document when suggesting spelling and grammar corrections. User agents may use the language of the element to determine what spelling and grammar rules to use, or may use the user's preferred language settings. UAs should use input element attributes such as pattern to ensure that the resulting value is valid, where possible.
Vernon Fowler

HTML5 forms input types | HTML5 Doctor - 0 views

  • Once more, the iPhone recognises type="tel", only this time it goes one step further and completely changes the keyboard to the standard phone keyboard, as shown on the left in Figure 6. In addition to the iPhone, some Android devices (such as HTC Desire, shown on the right in Figure 6) also display a numeric keyboard for type="tel". That’s pretty handy, don’t you think? Nice, big keys for entering a phone number help you to get that big, nasty form completed quickly.
  • In contrast to Opera’s implementation, the iPhone (Figure 8) and some Android devices (such as HTC Desire, shown on the right in Figure 6-13) simply render the field as a standard text box but optimize the keyboard for easy input.
  • Chris’ technique may soon become absolete though with the introduction of the inputmode attribute. The attribute, recently added to the specification will allow users to specify the type of input mechanism that is most useful for users. When implemented, you will be able to choose between numeric, latin, email, or kana input modes.
  • ...3 more annotations...
  • To make the iPhone render with the standard telephone keypad as we saw for type="text" Chris Coyier, of CSS Tricks devised a little hoax you can use. Rather than using type=”number”, use a standard type="text" input and add a pattern attribute that accepts only numbers, as shown below. This solution isn’t ideal but if you think it could be useful, Chris has put a short video together showing it in action. <input type="text" pattern="[0-9]*" name="shoe-size">
  • There are dedicated keys for the @ and . characters to help you complete the field more efficiently. As we discussed with type="search", there is no downside to using type="email" right now. If a browser doesn’t support it, it will degrade to type="text". And in some browsers, users will get a helping hand.
  • The url input type, as you might expect, is for web addresses. You can use the multiple attribute to enter more than one URL. Like type="email", a browser will carry out simple validation on these fields and present an error message on form submission. This is likely to include looking for forward slashes, periods, and spaces, and possibly detecting a valid top-level domain (such as .com or .co.uk). Use the url input type like so: <input type="url" name="url" required>
Vernon Fowler

Microdata - Dive Into HTML5 - 0 views

  • a third option developed using lessons learned from microformats and RDFa, and designed to be integrated into HTML5 itself: microdata.
  • “Adding microdata” to your page is a matter of adding a few attributes to the HTML elements you already have.
  • So where is the real information? It’s in the <dd> element, so that’s where we need to put the itemprop attribute. Which property is it? It’s the name property. Where is the property value? It’s the text within the <dd> element. Does that need to be marked up? the HTML5 microdata data model says no, <dd> elements have no special processing, so the property value is just the text within the element.
  • ...7 more annotations...
  • This technique is also useful for microdata. There are two distinct pieces of information here: a title and an affiliation. If you wrap each piece in a dummy <span> element, you can declare that each <span> is a separate microdata property.
  • There are two major classes of applications that consume HTML, and by extension, HTML5 microdata: Web browsers Search engines
  • Google supports microdata as part of their Rich Snippets program.
  • a handy tool to see how Google “sees” your microdata properties
  • Just like associating a URL with a Person, you can associate a URL with an Organization. This could be the company’s home page, a contact page, product page, or anything else. If it’s a URL about, from, or belonging to the Organization, mark it up with an itemprop="url" attribute.
  • To handle edge cases like this, HTML5 provides a way to annotate invisible data. This technique should only be used as a last resort. If there is a way to display or render the data you care about, you should do so. Invisible data that only machines can read tends to “go stale” quickly. That is, someone will come along later and update the visible text but forget to update the invisible data. This happens more often than you think, and it will happen to you too.
  • itemscope says that this element is the enclosing element for a microdata item with its own vocabulary (given in the itemtype attribute). All the properties within this element are properties of http://data-vocabulary.org/Geo, not the surrounding http://data-vocabulary.org/Organization.
Vernon Fowler

Relevant Dropdowns: Polyfill for Datalist | CSS-Tricks - 0 views

  •  
    "The list attribute / datalist element of HTML5 forms is pretty cool. As you type in a text input, it shows you a dropdown menu of choices you can pick from. Or you can type in whatever you want. The list attribute alone doesn't lock you into any specific value. In that way, it's a bit like a group of radio buttons with an "other" type-in option."
Vernon Fowler

HTML5 Forms: Search Type Demo | Wufoo - 0 views

  • The results and autosave attributes shown above are not standard. In WebKit and Blink browsers you can add the non-standard results attribute to get a looking glass icon to click to see the latest searches, and autosave to keep them across page loads.
  • When a value is present, a gray x control shows up on the right of the input in IE, Chrome, Safari and Opera (but not Firefox or Chrome on Android) which can be clicked to clear the value.
Vernon Fowler

HTML5 differences from HTML4 - 0 views

  • Attributes with an empty value may be written as just the attribute name omitting the equals sign and the value, even if it's not a boolean attribute.
Vernon Fowler

How You Can Use HTML5 Custom Data Attributes and Why - SitePoint - 0 views

  • Besides the data- prefix, the name of a valid custom data attribute must contain only letters, numbers, hyphen (-), dot (.), colon (:) or underscore (_). It cannot contain capital letters.
  • I recommend you use this method for quick prototypes rather than a production website, not least because CSS-only tooltips are not fully accessible.
Vernon Fowler

HTML5 iframe Tag - 0 views

  •  
    Be wary of any plugins that create iframe elements. If they use invalid attributes, the iframe won't render in Internet Explorer (IE).
Vernon Fowler

HTML a name Attribute - 0 views

  • Use the id attribute instead.
Vernon Fowler

:required | CSS-Tricks - 0 views

  • The :required attribute works on radio buttons. If you put required on one radio button (or all), that particular group of radio buttons will be required. On checkboxes, makes each individual checkbox required (to be checked).
Vernon Fowler

Detecting HTML5 Features - Dive Into HTML5 - 0 views

  • The HTML5 microdata standard includes both HTML markup (primarily for search engines) and a set of DOM functions (primarily for browsers). There’s no harm in including microdata markup in your web pages. It’s nothing more than a few well-placed attributes, and search engines that don’t understand the microdata attributes will just ignore them. But if you need to access or manipulate microdata through the DOM, you’ll need to check whether the browser supports the microdata DOM API.
Vernon Fowler

HTML5 Tutorial - Web form 2.0 - 0 views

  • New Input attributes <input type="text" "new input attribute"/> Placeholder Autofocus Required
  • New input types <input type="new input type"/> Search Email, URL and Phone
  • Number as Spinner
Vernon Fowler

- HTML: Hypertext Markup Language | MDN - 0 views

  • A string value of any means that no stepping is implied, and any value is allowed (barring other constraints, such as min and max).
  • <input type="number"> elements do not support use of the pattern attribute for making entered values conform to a specific regex pattern.
  • inputs of type number support these attributes
  •  
    " elements of type number are used to let the user enter a number. They include built-in validation to reject non-numerical entries. The browser may opt to provide stepper arrows to let the user increase and decrease the value using their mouse or by simply tapping with a fingertip."
Vernon Fowler

Working with HTML5 video in web projects | Adobe Inspire Magazine - 0 views

  • The solution for now is to produce your videos in multiple formats. Table 1. Browser support by video format Browser MP4 WebM Ogg Internet Explorer 9 Yes No No Firefox 4.0 No Yes Yes Google Chrome 6 Yes Yes Yes Apple Safari 5 Yes No No Opera 10.6 No Yes Yes Note: For the latest compatibility information, always check the CanIUse website.
  • A more robust way to create the fallback is to use a JavaScript utility like Modernizr to evaluate the browser's capabilities and then dynamically write the video and source tags or embed the Flash video player using SWFObject.
  • Tip 3: The source tag should always include the "type" attribute with the correct MIME type value. You may need to add an .htaccess file to your server to define the MIME types as well. Check out the Video for everybody article for more tips on MIME types.
  • ...2 more annotations...
  • Tip 2: The video tag includes a range of parameters that you can use to configure the video. See the Mozilla article Using HTML5 audio and video for more information.
  • Tip 1: The Adobe Media Encoder does not currently export video to Ogg or WebM format. You can use the Firefogg add-on for Firefox to encode video to Ogg Theora format, or you can use Miro Video Converter to encode video to WebM or Ogg Theora format.
Vernon Fowler

Avoiding common HTML5 mistakes | HTML5 Doctor - 0 views

  • If it’s a purely presentational image and not referenced elsewhere in the document, then it’s definitely not a <figure>.
Vernon Fowler

The time element (and microformats) | HTML5 Doctor - 0 views

  • There is a boolean attribute pubdate specifically for this
  • <time datetime="2010-01-20" pubdate>
1 - 20 of 22 Next ›
Showing 20 items per page