Opera Presto offers support for HTML5 Forms, as described in the following data table.
| <elements> / attributes / "values" | Support |
|---|---|
<form>
|
Yes |
accept-charset
|
Yes |
action
|
Yes |
enctype
|
Yes |
method
|
Yes |
name
|
Yes |
novalidate
|
Yes |
target
|
Yes |
<fieldset>
|
Yes |
disabled
|
Yes |
form
|
Yes |
name
|
Yes |
<label>
|
Yes |
form
|
Yes |
for
|
Yes |
<input>
|
Yes |
accept
|
No |
formaction
|
Yes |
alt
|
Yes |
autocomplete
|
Yes |
autofocus
|
Yes |
checked
|
Yes |
disabled
|
Yes |
formenctype
|
Yes |
form
|
Yes |
height
|
Yes |
list
|
Yes |
max
|
Yes |
maxlength
|
Yes |
formmethod
|
Yes |
min
|
Yes |
multiple
|
No |
name
|
Yes |
formnovalidate
|
Yes |
pattern
|
Yes |
placeholder
|
No |
readonly
|
Yes |
required
|
Yes |
size
|
Yes |
src
|
Yes |
step
|
Yes |
formtarget
|
Yes |
type
|
Yes |
"button"
|
Yes |
"checkbox"
|
Yes |
"color"
|
No |
"date"
|
Yes |
"datetime"
|
Yes |
"datetime-local"
|
Yes |
"email"
|
Yes |
"file"
|
Yes |
"hidden"
|
Yes |
"image"
|
Yes |
"month"
|
Yes |
"number"
|
Yes |
"password"
|
Yes |
"radio"
|
Yes |
"range"
|
Yes |
"reset"
|
Yes |
"search"
|
No |
"submit"
|
Yes |
"text" (default value)
|
Yes |
"time"
|
Yes |
"url"
|
Yes |
"week"
|
Yes |
<button>
|
Yes |
formaction
|
Yes |
autofocus
|
Yes |
disabled
|
Yes |
formenctype
|
Yes |
form
|
Yes |
formmethod
|
Yes |
name
|
Yes |
formnovalidate
|
Yes |
formtarget
|
Yes |
type
|
Yes |
"button"
|
Yes |
"reset"
|
Yes |
"submit"
|
Yes |
value
|
Yes |
<select>
|
Yes |
autofocus
|
Yes |
disabled
|
Yes |
form
|
Yes |
multiple
|
Yes |
name
|
Yes |
required
|
No |
size (Note: The Opera Presto default value = "0", not "1".)
|
Partial |
<datalist>
|
Yes |
<optgroup>
|
Yes |
disabled
|
Yes |
label
|
Yes |
<option>
|
Yes |
disabled
|
Yes |
label
|
Yes |
selected
|
Yes |
value
|
Yes |
<textarea>
|
Yes |
autofocus
|
Yes |
cols
|
Yes |
disabled
|
Yes |
form
|
Yes |
maxlength
|
Yes |
name
|
Yes |
readonly
|
Yes |
required
|
Yes |
rows
|
Yes |
wrap
|
Yes |
<output>
|
Yes |
for
|
Yes |
form
|
Yes |
name
|
Yes |
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