Apart from the above mentioned attributes, HTML5 input elements introduced several new values for the type attribute. These are listed below.
NOTE: Try the entire following example using latest version of Opera browser.
Type | Description |
text | A free-form text field, nominally free of line breaks. |
password | A free-form text field for sensitive information, nominally free of line breaks. |
checkbox | A set of zero or more values from a predefined list. |
radio | An enumerated value. |
submit | A free form of button initiates form submission. |
file | An arbitrary file with a MIME type and optionally a file name. |
image | A coordinate, relative to a particular image's size, with the extra semantic that it must be the last value selected and initiates form submission. |
hidden | An arbitrary string that is not normally displayed to the user. |
select | An enumerated value, much like the radio type. |
textarea | A free-form text field, nominally with no line breaks restrictions. |
button | A free form of button which can initiate any event related to button. |
Following is the simple example of using labels, radio buttons, and submit buttons:
... <form action="http://example.com/cgiscript.pl" method="post"> <p> <label for="firstname">first name: </label> <input type="text" id="firstname"><br /> <label for="lastname">last name: </label> <input type="text" id="lastname"><br /> <label for="email">email: </label> <input type="text" id="email"><br> <input type="radio" name="sex" value="male"> Male<br> <input type="radio" name="sex" value="female"> Female<br> <input type="submit" value="send"> <input type="reset"> </p> </form> ... |
The <input> element in HTML5:
Apart from the above mentioned attributes, HTML5 input elements introduced several new values for the type attribute. These are listed below.
NOTE: Try the entire following example using latest version of Opera browser.
Type | Description |
datetime | A date and time (year, month, day, hour, minute, second, fractions of a second) encoded according to ISO 8601 with the time zone set to UTC. |
datetime-local | A date and time (year, month, day, hour, minute, second, fractions of a second) encoded according to ISO 8601, with no time zone information. |
date | A date (year, month, day) encoded according to ISO 8601. |
month | A date consisting of a year and a month encoded according to ISO 8601. |
week | A date consisting of a year and a week number encoded according to ISO 8601. |
time | A time (hour, minute, seconds, fractional seconds) encoded according to ISO 8601. |
number | This accepts only numerical value. The step attribute specifies the precision, defaulting to 1. |
range | The range type is used for input fields that should contain a value from a range of numbers. |
email | This accepts only email value. This type is used for input fields that should contain an e-mail address. If you try to submit a simple text, it forces to enter only email address in email@example.com format. |
url | This accepts only URL value. This type is used for input fields that should contain a URL address. If you try to submit a simple text, it forces to enter only URL address either in http://www.example.com format or in http://example.com format. |
The <output> element:
HTML5 introduced a new element <output> which is used to represent the result of different types of output, such as output written by a script.
You can use the for attribute to specify a relationship between the output element and other elements in the document that affected the calculation (for example, as inputs or parameters). The value of the for attribute is a space-separated list of IDs of other elements.
The placeholder attribute:
HTML5 introduced a new attribute called placeholder. This attribute on <input> and <textarea> elements provides a hint to the user of what can be entered in the field. The placeholder text must not contain carriage returns or line-feeds.
Here is the simple syntax for placeholder attribute:
<input type="text" name="search" placeholder="search the web"/> |
This attribute is supported by latest versions of Mozilla, Safari and Chrome browsers only.
The autofocus attribute:
This is a simple one-step pattern, easily programmed in JavaScript at the time of document load, automatically focus one particular form field.
HTML5 introduced a new attribute called autofocus which would be used as follows:
<input type="text" name="search" autofocus/> |
This attribute is supported by latest versions of Mozilla, Safari and Chrome browsers only.
The required attribute:
Now you do not need to have JavaScript for client side validations like empty text box would never be submitted because HTML5 introduced a new attribute called required which would be used as follows and would insist to have a value:
<input type="text" name="search" required/> |
This attribute is supported by latest versions of Mozilla, Safari and Chrome browsers only.
Source:http://www.tutorialsdesk.com/2012/09/the-element-in-html5.html
Tidak ada komentar:
Posting Komentar