Building the User Interface by Using HTML5: Organization ... - server

76 | Lesson 3
Table 3-5
(continued)
ATTRIBUTE VALUE DESCRIPTION
placeholder** text Displays a key word or short phrase that
describes the expected value of an input
field, such as “Email” for an email input
field; placeholder disappears when user
enters data
LICENSED PRODUCT NOT FOR RESALE
readonly readonly Restricts an input field to read-only
required** required A Boolean attribute that requires an input
field to be filled out before submitting the
form
size number Specifies the width of an input element, in
number of characters
src URL Specifies the Web address of the image
used as a submit button; used only for
type="image"
step** number Specifies the accepted number of intervals
for an input element; can be used with the
min and max attributes to create a range
of values
For example, you are creating a slider bar for
input. If you set step="3", each time the
user move the slider, the input value increases
or decreases by 3
type
button, checkbox, Specifies the type of input element to display
color, date,
datetime,
datetime-local,
email, file,
hidden, image,
month, number,
password, radio,
range, reset,
search, submit,
tel, text, time,
url, week
value text Specifies the value of an input element
width pixels Specifies the width of an input element;
used only with input type=”image”
**New in HTML5.