HTML - <input>
The HTML element <input>
is used to create interactive controls for web-based forms in order to accept data from the user. How an <input>
works varies considerably depending on the value of its type
attribute.
Description
The HTML element <input>
is used to create interactive controls for web-based forms in order to accept data from the user. How an <input>
works varies considerably depending on the value of its type
attribute.
Content categories | Flow content, listed, submittable, resettable, form-associated element, phrasing content. If the type is not hidden , then labellable element, palpable content. |
---|---|
Permitted content | None, it is an empty element. |
Tag omission | Must have a start tag and must not have an end tag. |
Permitted parent elements | Any element that accepts phrasing content. |
DOM interface | HTMLInputElement |
Attributes
Includes the Global Attributes.
Name | Version | Description |
---|---|---|
type |
The type of control to display. The default type is text, if this attribute is not specified. Possible values are:
|
|
accept |
If the value of the type attribute is file , this attribute indicates the types of files that the server accepts; otherwise it is ignored. The value must be a comma-separated list of unique content type specifiers:
|
|
accesskey |
HTML 4 | A single-character that the user can press to switch input focus to the control. This attribute is global in HTML5. |
mozactionhint |
Specifies an "action hint" used to determine how to label the enter key on mobile devices with virtual keyboards. Supported values are go , done , next , search , and send ; these automatically get mapped to the appropriate string (and are case-insensitive). |
|
autocapitalize |
This is a nonstandard attribute used by Chrome and iOS Safari Mobile, which controls whether and how the text value should be automatically capitalized as it is entered/edited by the user. The non-deprecated values are available in iOS 5 and later. Possible values are:
autocapitalize documentation in the Safari HTML Reference |
|
autocomplete |
HTML5 | This attribute indicates whether the value of the control can be automatically completed by the browser.Possible values are:
See the WHATWG Standard for more detailed information. If the autocomplete attribute is not specified on an input element, then the browser uses the autocomplete attribute value of the The autocomplete attribute also controls whether Firefox will, unlike other browsers, persist the dynamic disabled state and (if applicable) dynamic checkedness of an For most modern browsers (including Firefox 38+, Google Chrome 34+, IE 11+) setting the autocomplete attribute will not prevent a browser's password manager from asking the user if they want to store login (username and password) fields and, if they agree, from autofilling the login the next time the user visits the page. See The autocomplete attribute and login fields. |
autocorrect |
This is a nonstandard attribute supported by Safari that is used to control whether autocorrection should be enabled when the user is entering/editing the text value of the <input> . Possible attribute values are:
autocorrect documentation in the Safari HTML Reference |
|
autofocus |
HTML5 | This Boolean attribute lets you specify that a form control should have input focus when the page loads, unless the user overrides it, for example by typing in a different control. Only one form element in a document can have the autofocus attribute, which is a Boolean. It cannot be applied if the type attribute is set to hidden (that is, you cannot automatically set focus to a hidden control). Note that the focusing of the control may occur before the firing of the DOMContentLoaded event. |
capture |
When the value of the type attribute is |
|
checked |
When the value of the type attribute is Firefox will, unlike other browsers, by default, persist the dynamic checked state of an |
|
disabled |
This Boolean attribute indicates that the form control is not available for interaction. In particular, the Firefox will, unlike other browsers, by default, persist the dynamic disabled state of an |
|
form |
HTML5 | The form element that the input element is associated with (its form owner). The value of the attribute must be an id of a <form> element in the same document. If this attribute is not specified, this <input> element must be a descendant of a <form> element. This attribute enables you to place <input> elements anywhere within a document, not just as descendants of their form elements. An input can only be associated with one form. |
formaction |
HTML5 | The URI of a program that processes the information submitted by the input element, if it is a submit button or image. If specified, it overrides the action attribute of the element's form owner. |
formenctype |
HTML5 | If the input element is a submit button or image, this attribute specifies the type of content that is used to submit the form to the server. Possible values are:
If this attribute is specified, it overrides the |
formmethod |
HTML5 | If the input element is a submit button or image, this attribute specifies the HTTP method that the browser uses to submit the form. Possible values are:
If specified, this attribute overrides the |
formnovalidate |
HTML5 | If the input element is a submit button or image, this Boolean attribute specifies that the form is not to be validated when it is submitted. If this attribute is specified, it overrides the novalidate attribute of the element's form owner. |
formtarget |
HTML5 | If the input element is a submit button or image, this attribute is a name or keyword indicating where to display the response that is received after submitting the form. This is a name of, or keyword for, a browsing context (for example, tab, window, or inline frame). If this attribute is specified, it overrides the target attribute of the elements's form owner. The following keywords have special meanings:
|
height |
HTML5 | If the value of the type attribute is image , this attribute defines the height of the image displayed for the button. |
incremental |
This is a nonstandard attribute supported by WebKit (Safari) and Blink (Chrome) that only applies when the type is search . If the attribute is present, regardless of what its value is, the <input> fires search events as the user edits the text value. The event is only fired after an implementation-defined timeout has elapsed since the most recent keystroke; new keystrokes reset the timeout. In other words, the event firing is debounced. If the attribute is absent, the search event is only fired when the user explicitly initiates a search (e.g. by pressing the Enter key while within field). incremental documentation in the Safari HTML Reference |
|
inputmode |
HTML5 | A hint to the browser for which keyboard to display. This attribute applies when the value of the type attribute is text, password, email, or url. Possible values are:
|
list |
HTML5 | Identifies a list of pre-defined options to suggest to the user. The value must be the id of a <datalist> element in the same document. The browser displays only options that are valid values for this input element. This attribute is ignored when the type attribute's value is hidden , checkbox , radio , file , or a button type. |
max |
HTML5 | The maximum (numeric or date-time) value for this item, which must not be less than its minimum (min attribute) value. |
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 Unicode code points) that the user can enter; for other control types, it is ignored. It can exceed the value of the size attribute. If it is not specified, the user can enter an unlimited number of characters. Specifying a negative number results in the default behavior; that is, the user can enter an unlimited number of characters. The constraint is evaluated only when the value of the attribute has been changed. |
|
min |
HTML5 | The minimum (numeric or date-time) value for this item, which must not be greater than its maximum (max attribute) value. |
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; for other control types, it is ignored. |
multiple |
HTML5 | This Boolean attribute indicates whether the user can enter more than one value. This attribute applies when the type attribute is set to email or file ; otherwise it is ignored. |
name |
The name of the control, which is submitted with the form data. | |
pattern |
HTML5 | A regular expression that the control's value is checked against. The pattern must match the entire value, not just some subset. Use the title attribute to describe the pattern to help the user. This attribute applies when the value of the type attribute is text , search , tel , url , email or password ; otherwise it is ignored. The regular expression language is the same as JavaScript RegExp algorithm, with the 'u' parameter that makes it treat the pattern as a sequence of unicode code points. The pattern is not surrounded by forward slashes. |
placeholder |
HTML5 | A hint to the user of what can be entered in the control . The placeholder text must not contain carriage returns or line-feeds.
Note: Do not use the
placeholder attribute instead of a <label> element. Their purposes are different: the <label> attribute describes the role of the form element; that is, it indicates what kind of information is expected, the placeholder attribute is a hint about the format the content should take. There are cases in which the placeholder attribute is never displayed to the user, so the form must be understandable without it. |
readonly |
HTML5 | This attribute indicates that the user cannot modify the value of the control. The value of the attribute is irrelevant. If you need read-write access to the input value, do not add the "readonly" attribute. It is ignored if the value of the type attribute is hidden , range , color , checkbox , radio , file , or a button type (such as button or submit ). |
required |
HTML5 | This attribute specifies that the user must fill in a value before submitting a form. It cannot be used when the type attribute is hidden , image , or a button type (submit , reset , or button ). The :optional and :required CSS pseudo-classes will be applied to the field as appropriate. |
results |
This is a nonstandard attribute supported by Safari that only applies when the type is search . It is used to control the maximum number of entries that should be displayed in the <input> 's native dropdown list of past search queries. Its value should be a nonnegative decimal integer. |
|
selectionDirection |
HTML5 | The direction in which selection occurred. This is "forward" if the selection was made from left-to-right in an LTR locale or right-to-left in an RTL locale, or "backward" if the selection was made in the opposite direction. This can be "none" if the selection direction is unknown. |
size |
The initial size of the control. This value is in pixels unless the value of the type attribute is text or password , in which case, it is an integer number of characters. Starting in HTML5, this attribute applies only when the type attribute is set to text , search , tel , url , email , or password ; otherwise it is ignored. In addition, the size must be greater than zero. If you don't specify a size, a default value of 20 is used. HTML5 simply states "the user agent should ensure that at least that many characters are visible", but different characters can have different widths in certains fonts; in some browsers, a certain string with x characters will not be entirely visible even if size is defined to at least x. |
|
spellcheck |
HTML5 | Setting the value of this attribute to true indicates that the element needs to have its spelling and grammar checked. The value default indicates that the element is to act according to a default behavior, possibly based on the parent element's own spellcheck value. The value false indicates that the element should not be checked. |
src |
If the value of the type attribute is image , this attribute specifies a URI for the location of an image to display on the graphical submit button; otherwise it is ignored. |
|
step |
HTML5 | Works with the min and max attributes to limit the increments at which a numeric or date-time value can be set. It can be the string any or a positive floating point number. If this attribute is not set to any , the control accepts only values at multiples of the step value greater than the minimum. |
tabindex |
HTML 4 | The position of the element in the tabbing navigation order for the current document. |
usemap |
HTML 4 | The name of a <map> element to be used as an image map. |
value |
The initial value of the control. This attribute is optional except when the value of the type attribute is radio or checkbox .Note that when reloading the page, Gecko and IE will ignore the value specified in the HTML source, if the value was changed before the reload. |
|
webkitdirectory |
This Boolean attribute indicates if the selector used when the type attribute is file has to allow for the selection of directories only. |
|
width |
HTML5 | If the value of the type attribute is image , this attribute defines the width of the image displayed for the button. |
x-moz-errormessage |
This Mozilla extension allows you to specify the error message to display when a field doesn't successfully validate. |
Browser Compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 1.0 | 1.0 (1.7 or earlier) | (Yes)[1] | 1.0 | 1.0 |
type | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
type=button | 1.0 | 1.0 (1.7 or earlier) | 3 | 1.0 | 1.0 |
type=checkbox | 1.0 | 1.0 (1.7 or earlier) 3.6 (1.9.2)[2] |
2 | 1.0 | 1.0 |
type=color | 21.0 | 29.0 (29.0) | No support | 11.01 | No support |
type=date | 5.0[24] | No support[3] | No support | 10.62 | (Yes)[4] |
type=datetime | No support[4] | No support[3] | No support | 10.62 | (Yes)[4] |
type=datetime-local | 5.0 | No support[3] | No support | 10.62 | (Yes)[4] |
type=email | 5.0 | 4.0 (2.0) | 10 | 10.62 | ? |
type=file | 1.0 | 1.0 (1.7 or earlier) | 3.02 | 1.0 | 1.0 |
type=hidden | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
type=image | 1.0 | 1.0 (1.7 or earlier)[5] | 2 | 1.0 | 1.0 |
type=month | 5.0 | No support[6] | No support | 10.62 | (Yes)[4] |
type=number | 6.0[7] | 29.0 (29.0) | 10[4] | 10.62 | (Yes) |
type=password | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
type=radio | 1.0 | 1.0 (1.7 or earlier) 3.6 (1.9.2)[2] |
2 | 1.0 | 1.0 |
type=range | 5.0 | 23.0 (23.0) | 10 | 10.62[8] | (Yes) |
type=reset | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
type=search | 5.0 | 4.0 (2.0) | 10 | 11.01 | (Yes) |
type=submit | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
type=tel | 5.0 | 4.0 (2.0) | 10 | 11.01 | ? |
type=text | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
type=time | 5.0 | No support[3] | No support | 10.62 | (Yes)[4] |
type=url | 5.0 | 4.0 (2.0) | 10 | 10.62 | ? |
type=week | 5.0 | No support[3] | No support | 10.62 | (Yes)[4] |
accept=[file extension] | (Yes) | No support | 10 | ? | No support |
accept=[MIME type] | 8.0 | 16.0 (16.0) | 10 | 10 | No support |
accept=audio/* | (Yes) | 4.0 (2.0)[9] | 10 | No support | No support |
accept=video/* | (Yes) | 4.0 (2.0)[10] | 10 | No support | No support |
accept=image/* | (Yes) | 4.0 (2.0)[11] | 10 | No support | No support |
accept=[. + ext] | ? | 37.0 (37.0) | ? | ? | ? |
accesskey | 1.0 | (Yes) | 6 | 1.0 | ? |
mozactionhint | No support | 4.0 (2.0) | No support | No support | No support |
autocapitalize | 43 | ? | ? | ? | (Yes) |
autocomplete | 17.0 | 4.0 (2.0) | 5 | 9.6 | 5.2 |
autofocus | 5.0 | 4.0 (2.0) | 10 | 9.6 | 5.0 |
capture | Chrome for Android (0.16) | ? | ? | ? | ? |
checked | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
disabled | 1.0 | 1.0 (1.7 or earlier)[25] | 6 | 1.0 | 1.0 |
form | 9.0 | 4.0 (2.0) | ? | 10.62 | ? |
formaction | 9.0 | 4.0 (2.0) | 10 | 10.62 | 5.2 |
formenctype | 9.0 | 4.0 (2.0) | 10 | 10.62 | ? |
formmethod | 9.0 | 4.0 (2.0) | 10 | 10.62 | 5.2 |
formnovalidate | 5.0[12] | 4.0 (2.0) | 10 | 10.62 | ? |
formtarget | 9.0 | 4.0 (2.0) | 10 | 10.62 | 5.2 |
height | 1.0 | 16.0 (16.0) | ? | 1.0 | ? |
incremental | (Yes) | No support | No support | No support | (Yes) |
inputmode | No support | No support | No support | No support | No support |
list | 20.0 | 4.0 (2.0) | 10 | 9.6 | No support |
max | 5.0 | 16.0 (16.0) | ? | 10.62 | ? |
maxlength | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
min | 5.0 | 16.0 (16.0) | ? | 10.62 | ? |
minlength | 40.0 | ? | ? | ? | ? |
multiple | 1.0[13] | 3.6 (1.9.2)[14] (Yes)[15] |
10 | 1.0 10.62[14] 11.01[15] |
? |
name | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
pattern | 5.0 | 4.0 (2.0) | 10 | 9.6 | No support |
placeholder | 10.0 | 4.0 (2.0) | 10 | 11.00 | 5.0 |
readonly | 1.0 | 1.0 (1.7 or earlier) | 6[16] | 1.0 | 1.0 |
required | 5.0 10[17] |
4.0 (2.0) | 10 | 9.6 | No support |
size | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
spellcheck | 10.0 | 3.6 (1.9.2) | 10 | 11.0 | 4.0 |
src | 1.0 | 1.0 (1.7 or earlier) | 2 | 1.0 | 1.0 |
step | 6.0 | 16.0 (16.0) | 10 | 10.62 | 5.0 |
tabindex | 1.0 | 1.0 (1.7 or earlier) | 6[18] | (Yes) | ? |
webkitdirectory | (Yes) | 49.0 (49.0) | ? | (Yes) | (Yes) |
width | 1.0 | 16.0 (16.0) | ? | 1.0 | ? |
Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | (Yes) | 4.0 (2.0) | (Yes) | (Yes) | (Yes) |
type | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
type=button | (Yes) | (Yes)[27] | (Yes) | (Yes) | (Yes) |
type=checkbox | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
type=color | ? | 27.0 (27.0) | ? | (Yes) | ? |
type=date | No support | No support | No support | 10.62 | 5.0[23] |
type=datetime | No support | No support | No support | 10.62 | (Yes)[23] |
type=datetime-local | No support | No support | No support | 10.62 | (Yes)[23] |
type=email | ? | 4.0 (2.0) | ? | (Yes) | 3.1[19] |
type=file | ? | ?[27] | ? | ? | (Yes)[21] |
type=hidden | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
type=image | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
type=month | No support | No support | No support | 10.62 | (Yes)[23] |
type=number | 2.3 | 29.0 (29.0) | ? | (Yes) | 4.0[19] |
type=password | (Yes) | (Yes) | (Yes) | (Yes) | (Yes)[22] |
type=radio | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
type=range | ? | No support | ? | (Yes) | 5.0 |
type=reset | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
type=search | ? | 4.0 (2.0) | ? | 10.62 | 4.0[22] |
type=submit | (Yes) | (Yes)[27] | (Yes) | (Yes) | (Yes) |
type=tel | 2.3 | 4.0 (2.0) | ? | 10.62 | 3.1[22] |
type=text | (Yes) | (Yes)[27] | (Yes) | (Yes) | (Yes)[22] |
type=time | No support | No support | No support | 10.62 | (Yes)[23] |
type=url | ? | 4.0 (2.0) | ? | 10.62 | 3.1[19] |
type=week | No support | No support | No support | 10.62 | (Yes) |
accept=[MIME type] | ? | ? | ? | ? | ? |
accept=audio/* | ? | ? | ? | ? | ? |
accept=image/* | ? | ?[26] | ? | ? | ? |
accept=video/* | ? | ? | ? | ? | ? |
accept=[. + ext] | ? | 37.0 (37.0) | ? | ? | ? |
accesskey | ? | ? | ? | ? | ? |
autocomplete | ? | 4.0 (2.0) | (Yes) | (Yes) | (Yes) |
autofocus | 3.2 | 4.0 (2.0) | ? | (Yes) | ? |
capture | 3.0 | 10.0 (10.0) | ? | ? | 6.0 |
checked | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
disabled | (Yes) | 4.0 (2.0) | (Yes) | (Yes) | (Yes) |
form | ? | ? | ? | ? | ? |
formaction | ? | 4.0 (2.0) | ? | 10.62 | 5.0 |
formenctype | ? | ? | ? | ? | ? |
formmethod | ? | 4.0 (2.0) | ? | 10.62 | 5.0 |
formnovalidate | ? | 4.0 (2.0) | ? | 10.62 | ? |
formtarget | ? | 4.0 (2.0) | ? | 10.62 | 5.0 |
height | ? | 16.0 (16.0) | ? | ? | ? |
list | No support | 4.0 (2.0) | ? | (Yes) | ? |
max | ? | 16.0 (16.0)[20] | ? | 10.62 | ? |
maxlength | (Yes) | 4.0 (2.0) | (Yes) | (Yes) | (Yes) |
min | ? | 16.0 (16.0)[20] | ? | 10.62 | ? |
minlength | ? | No support | ? | 27.0 | ? |
multiple | ? | (Yes) | ? | (Yes) | ? |
name | (Yes) | 4.0 (2.0) | (Yes) | (Yes) | 1.0 |
pattern | ? | 4.0 (2.0) | ? | (Yes) | (Yes) |
placeholder | 2.3 | 4.0 (2.0) | ? | 11.10 | 4 |
readonly | (Yes) | 4.0 (2.0) | (Yes) | (Yes) | (Yes) |
required | ? | (Yes) | ? | (Yes) | ? |
size | (Yes) | 4.0 (2.0) | (Yes) | (Yes) | (Yes) |
spellcheck | ? | 4.0 (2.0) | ? | 11.0 | ? |
src | ? | ? | ? | ? | ? |
step | ? | 16.0 (16.0)[20] | ? | 10.62 | ? |
tabindex | ? | ? | ? | ? | ? |
webkitdirectory | (Yes) | 49.0 (49.0) | ? | (Yes) | (Yes) |
width | ? | 16.0 (16.0) | ? | ? | ? |
[1] This was implemented in version 2 or earlier.
[2] Implemented for indeterminate
value.
[3] This feature is not implemented yet. See bug 825294.
[4] It is recognized but there is no UI.
[5] Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1) only sends x and y coordinates when clicked, no longer the name/value of the element.
[6] This feature is not implemented yet. See bug 888320.
[7] Localization in Chrome 11.
[8] Opera 11.01 added support for a default value.
[9] Filters for the following audio file extensions: .aac, .aif, .flac, .iff, .m4a, .m4b, .mid, .midi, .mp3, .mpa, .mpc, .oga, .ogg, .ra, .ram, .snd, .wav, .wma.
[10] Filters for the following video file extensions: .avi, .divx, .flv, .m4v, .mkv, .mov, .mp4, .mpeg, .mpg, .ogm, .ogv, .ogx, .rm, .rmvb, .smil, .webm, .wmv, .xvid
[11] Filters for the following image file extensions: .jpe, .jpg, .jpeg, .gif, .png, .bmp, .ico, .svg, .svgz, .tif, .tiff, .ai, .drw, .pct, .psp, .xcf, .psd, .raw
[12] In 6.0 it only worked with the HTML5 document type, validation support in 7.0 was disabled and re-enabled in 10.0.
[13] Supported for type="file"
and type="email"
as of version 5.0.
[14] Supported for type="file"
.
[15] Supported for type="email"
.
[16] Missing for type="checkbox"
and type="radio"
.
[17] Supported for <select>
element.
[18] Elements with tabindex
> 0
are not navigated.
[19] No validation but provides a specific keyboard. Safari Mobile for iOS applies a default style of
to disabled textual opacity
: 0.4<input>
elements. Other major browsers don't currently share this particular default style.
[20] UI might remain unimplemented.
[21] File uploads were broken in Mobile Safari for iOS 8.0 and 8.0.1. The bug was fixed in iOs 8.0.2.
[22] Safari Mobile for iOS applies a default style of
to disabled textual opacity
: 0.4<input>
elements. Other major browsers don't currently share this particular default style.
[23] On Safari Mobile for iOS, setting
on an display
: block<input>
of type="date"
, type="time"
, type="datetime"
, type="datetime-local"
, or type="month"
causes the text within the <input>
to become vertically misaligned. See WebKit bug 139848.
[24] As of Chrome v39, an <input>
of type="date"
styled with
will have a display
: table-cell; width
: 100%;min-width
imposed by Chrome and it cannot become narrower than this minimum width. See Chromium bug #346051.
[25] Firefox will, unlike other browsers, by default, persist the dynamic disabled state and (if applicable) dynamic checkedness of an <input>
across page loads. Setting the value of the autocomplete
attribute to off
disables this feature; this works even when the autocomplete
attribute would normally not apply to the <input>
by virtue of its type
. See bug 654072.
[26] Starting in Gecko 9.0 (Firefox 9.0 / Thunderbird 9.0 / SeaMonkey 2.6), Firefox for Android lets users capture images using their camera and upload them, without having to leave the browser. Web developers can implement this feature by simply setting the accept
attribute's value to image/*
on their <input>
of type="file"
input.
[27] Firefox for Android sets a default background-image
gradient on all type="file"
inputs. This can be disabled using background-image: none;
. It also sets a default border
on them.
Notes
File inputs
Note: Starting in Gecko 2.0, calling the click()
method on an <input>
element of type "file" opens the file picker and lets the user select files. See Using files from web applications for an example and more details.
You can't set the value of a file picker from a script; doing something like the following has no effect:
var e = getElementById("someFileInputElement"); e.value = "foo";
Error messages
If you want Firefox to present a custom error message when a field fails to validate, you can use the x-moz-errormessage
attribute to do so:
<input type="email" x-moz-errormessage="Please specify a valid email address.">
Note, however, that this is not standard and will not have an effect on other browsers.
See Also
- Other form-related elements:
<form>
,<button>
,<datalist>
,<legend>
,<label>
,<select>
,<optgroup>
,<option>
,<textarea>
,<keygen>
,<fieldset>
,<output>
,<progress>
and<meter>
. - Cross-browser HTML5 placeholder text
Specifications
Specification | Status | Comment |
---|---|---|
WHATWG HTML Living Standard The definition of '<input>' in that specification. |
Living Standard | |
HTML Media Capture The definition of '<input capture>' in that specification. |
Candidate Recommendation | Adds the capture element |
HTML5 The definition of '<input>' in that specification. |
Recommendation | |
HTML 4.01 Specification The definition of '<form>' in that specification. |
Recommendation |
Localization
The allowed inputs for certain <input> types depend on the locale. In some locales, 1,000.00 is a valid number, while in other locales the valid way to enter this number is 1.000,00.
Firefox uses the following heuristics to determine the locale to validate the user's input (at least for type="number"
):
- Try the language specified by a
lang
/xml:lang
attribute on the element or any of its parents; - Try the language specified by any Content-Language HTTP header or
- If none specified, use the browser's locale.
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/html/element/input