ΠΠ°ΠΊ ΡΠ΄Π΅Π»Π°ΡΡ input Π½Π΅Π²ΠΈΠ΄ΠΈΠΌΡΠΌ
ΠΠ°ΠΊ ΡΠ΄Π΅Π»Π°ΡΡ input Π½Π΅Π²ΠΈΠ΄ΠΈΠΌΡΠΌ
elements of type hidden let web developers include data that cannot be seen or modified by users when a form is submitted. For example, the ID of the content that is currently being ordered or edited, or a unique security token. Hidden inputs are completely invisible in the rendered page, and there is no way to make it visible in the page’s content.
Value | A DOMString representing the value of the hidden data you want to pass back to the server. |
Events | None. |
Supported Common Attributes | autocomplete |
IDL attributes | value |
Methods | None. |
Note: The input and change events do not apply to this input type. Hidden inputs cannot be focused even using JavaScript (e.g. hiddenInput.focus() ).
Value
The element’s value attribute holds a DOMString that contains the hidden data you want to include when the form is submitted to the server. This specifically can’t be edited or seen by the user via the user interface, although you could edit the value via browser developer tools.
Warning: While the value isn’t displayed to the user in the page’s content, it is visibleβand can be editedβusing any browser’s developer tools or «View Source» functionality. Do not rely on hidden inputs as a form of security.
Additional attributes
In addition to the attributes common to all elements, hidden inputs offer the following attributes.
This is actually one of the common attributes, but it has a special meaning available for hidden inputs. Normally, the name attribute functions on hidden inputs just like on any other input. However, when the form is submitted, a hidden input whose name is set to _charset_ will automatically be reported with the value set to the character encoding used to submit the form.
Using hidden inputs
As mentioned above, hidden inputs can be used anywhere that you want to include data the user can’t see or edit along with the form when it’s submitted to the server. Let’s look at some examples that illustrate its use.
Tracking edited content
One of the most common uses for hidden inputs is to keep track of what database record needs to be updated when an edit form is submitted. A typical workflow looks like this:
The idea here is that during step 2, the ID of the record being updated is kept in a hidden input. When the form is submitted in step 3, the ID is automatically sent back to the server with the record content. The ID lets the site’s server-side component know exactly which record needs to be updated with the submitted data.
You can see a full example of what this might look like in the Examples section below.
Improving website security
Hidden inputs are also used to store and submit security tokens or secrets, for the purposes of improving website security. The basic idea is that if a user is filling in a sensitive form, such as a form on their banking website to transfer some money to another account, the secret they would be provided with would prove that they are who they say they are, and that they are using the correct form to submit the transfer request.
This would stop a malicious user from creating a fake form, pretending to be a bank, and emailing the form to unsuspecting users to trick them into transferring money to the wrong place. This kind of attack is called a Cross Site Request Forgery (CSRF); pretty much any reputable server-side framework uses hidden secrets to prevent such attacks.
Note: Placing the secret in a hidden input doesn’t inherently make it secure. The key’s composition and encoding would do that. The value of the hidden input is that it keeps the secret associated with the data and automatically includes it when the form is sent to the server. You need to use well-designed secrets to actually secure your website.
Validation
Hidden inputs don’t participate in constraint validation; they have no real value to be constrained.
Examples
Let’s look at how we might implement a simple version of the edit form we described earlier (see Tracking edited content), using a hidden input to remember the ID of the record being edited.
The edit form’s HTML might look a little bit like this:
Let’s also add some simple CSS:
The server would set the value of the hidden input with the ID » postID » to the ID of the post in its database before sending the form to the user’s browser and would use that information when the form is returned to know which database record to update with modified information. No scripting is needed in the content to handle this.
The output looks like this:
Note: You can also find the example on GitHub (see the source code, and also see it running live).
When submitted, the form data sent to the server will look something like this:
Even though the hidden input cannot be seen at all, its data is still submitted.
Π‘ΠΊΡΡΠ²Π°ΡΡ input Π΅ΡΠ»ΠΈ ΠΏΡΡΡΠΎΠΉ
ΠΠΎΠ΄ΡΠΊΠ°ΠΆΠΈΡΠ΅ ΠΊΠ°ΠΊ ΡΠΊΡΡΠ²Π°ΡΡ input Π΅ΡΠ»ΠΈ ΠΎΠ½ ΠΏΡΡΡΠΎΠΉ.
ΠΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ° Π½Π΅ Π΄Π°Π»ΠΎ
4 ΠΎΡΠ²Π΅ΡΠ° 4
Π Π½ΡΠΆΠ΅Π½ Π»ΠΈ Π²Π°ΠΌ Javascript (ΠΈ AJAX) Π²ΠΎΠΎΠ±ΡΠ΅? Π‘ΠΊΡΡΡΡ ΡΠ»Π΅ΠΌΠ΅Π½Ρ Ρ ΠΏΡΡΡΡΠΌ Π°ΡΡΠΈΠ±ΡΡΠΎΠΌ ΠΌΠΎΠΆΠ½ΠΎ ΠΈ ΡΠΈΠ»Π°ΠΌΠΈ CSS2, ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΈΠ²Π°Π΅ΠΌΡΠΌ Π²ΡΠ΅ΠΌΠΈ Π±ΡΠ°ΡΠ·Π΅ΡΠ°ΠΌΠΈ Π±Π΅Π· ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΡ:
Π― ΡΠ°ΠΊ ΠΏΠΎΠ½ΡΠ» ΠΊΠ°ΠΊΠΎΠΉ-ΡΠΎ Π²ΠΎΠΏΡΠΎΡΠ½ΠΈΠΊ. ΠΠ΅ Π·Π½Π°Ρ Π·Π°ΡΠ΅ΠΌ ΡΠΊΡΡΠ²Π°ΡΡ, Π½ΠΎ Π²ΠΈΠΆΡ ΠΊΠ°ΠΊ ΠΌΠΈΠ½ΠΈΠΌΡΠΌ, ΡΡΠΎ
Π css Π½Π΅Ρ display:form-check-inline. ΠΠΎΠΌΠ΅Π½ΡΠΉ Ρ ΠΎΡΡ Π±Ρ Π½Π° display:block(inline-block). Π ΠΏΠΎΡΡΠ°Π²Ρ ΠΊΠ°ΠΊ ΡΠ΅Π±Π΅ Π²ΡΡΠ΅ ΠΏΠΈΡΠ°Π»ΠΈ text().length == 0
Π― Π±Ρ Π»ΡΡΡΠ΅ ΠΎΠ±Π΅ΡΠ½ΡΠ» ΡΠ°Π΄ΠΈΠΎ ΠΊΠ½ΠΎΠΏΠΊΠΈ Π² Π»Π΅ΠΉΠ±Π»Ρ ΠΈ ΠΏΡΠΎΠ²Π΅ΡΡΠ» ΡΠ΅ΠΊΡΡ ΡΠΆΠ΅ Π² Π»Π΅ΠΉΠ±Π»Π°Ρ
ΠΡΡ Π΅ΡΡ ΠΈΡΠ΅ΡΠ΅ ΠΎΡΠ²Π΅Ρ? ΠΠΎΡΠΌΠΎΡΡΠΈΡΠ΅ Π΄ΡΡΠ³ΠΈΠ΅ Π²ΠΎΠΏΡΠΎΡΡ Ρ ΠΌΠ΅ΡΠΊΠ°ΠΌΠΈ javascript html jquery css ΠΈΠ»ΠΈ Π·Π°Π΄Π°ΠΉΡΠ΅ ΡΠ²ΠΎΠΉ Π²ΠΎΠΏΡΠΎΡ.
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HTML!? ΠΡΡΡ ΠΏΠΎΠ»Π΅ Π²Π²ΠΎΠ΄Π° Type text, ΠΏΠΎΡΠ»Π΅ Π²Π²ΠΎΠ΄Π° ΡΠ΅ΠΊΡΡΠ° ΠΈ Π½Π°ΠΆΠ°ΡΠΈΡ entrer ΡΠ΅ΡΡΠ΅ΡΡΡ ΡΠΎΠΊΡΡ, ΠΊΠ°ΠΊ Π΅Π³ΠΎ ΠΎΡΡΠ°Π²ΠΈΡΡ Π² ΡΡΠΎΠΌ ΠΆΠ΅ ΠΏΠΎΠ»Π΅?
HTML!? ΠΡΡΡ ΠΏΠΎΠ»Π΅ Π²Π²ΠΎΠ΄Π° Type text, ΠΏΠΎΡΠ»Π΅ Π²Π²ΠΎΠ΄Π° ΡΠ΅ΠΊΡΡΠ° ΠΈ Π½Π°ΠΆΠ°ΡΠΈΡ entrer ΡΠ΅ΡΡΠ΅ΡΡΡ ΡΠΎΠΊΡΡ, ΠΊΠ°ΠΊ Π΅Π³ΠΎ.
ΠΠΎΠΊΠ°Π·Π°ΡΡ/ΡΠΊΡΡΡΡ ΡΠ΅ΠΊΡΡΠΎΠ²ΠΎΠ΅ ΠΏΠΎΠ»Π΅ ΠΏΡΠΈ Π½Π°ΠΆΠ°ΡΠΈΠΈ Π½Π° ΠΊΠ½ΠΎΠΏΠΊΡ
ΠΠ°ΠΊ ΠΠΎΠΊΠ°Π·Π°ΡΡ/ΡΠΊΡΡΡΡ ΡΠ΅ΠΊΡΡΠΎΠ²ΠΎΠ΅ ΠΏΠΎΠ»Π΅ ΠΏΡΠΈ Π½Π°ΠΆΠ°ΡΠΈΠΈ Π½Π° ΠΊΠ½ΠΎΠΏΠΊΡ? ΠΡΠΈ Π·Π°Π³ΡΡΠ·ΠΊΠΈ ΡΡΡΠ°Π½ΠΈΡΡ ΡΠ΅ΠΊΡΡΠΎΠ²ΠΎΠ΅ ΠΏΠΎΠ»Π΅.
ΠΠ°ΠΊ ΡΠΊΡΡΡΡ ΡΠΎΡΠΌΡ ΠΈ ΠΎΡΡΠ°Π²ΠΈΡΡ Π΅Π΅ ΡΠΎΠ»ΡΠΊΠΎ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ°Ρ
?
ΠΠ΄ΡΠ°Π²ΡΡΠ²ΡΠΉΡΠ΅, Ρ ΠΏΠΈΡΡ Π½Π΅ΠΊΡΡ ΠΏΡΠΎΠ³Ρ.ΠΠΎΠΎΠ±ΡΠ΅ΠΌ Ρ Ρ
ΠΎΡΡ ΡΡΠΎΠ±Ρ ΠΏΡΠΈ Π·Π°ΠΏΡΡΠΊΠ΅ ΠΈ Π΅Ρ ΡΠ°Π±ΠΎΡΠ΅ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ°.
ΠΠ°ΠΊ ΡΠΊΡΡΡΡ ΠΊΠ½ΠΎΠΏΠΊΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ ΠΈΠ· TaskBar, Π½ΠΎ ΠΎΡΡΠ°Π²ΠΈΡΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ Π² ΡΠΏΠΈΡΠΊΠ΅ ΠΏΡΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ ΠΠΈΡΠΏΠ΅ΡΡΠ΅ΡΠ° Π·Π°Π΄Π°Ρ?
1. ΠΠ°ΠΊ Π² Delphi7 ΠΏΠΎΠ΄ WindowsXP ΡΠΊΡΡΡΡ ΠΊΠ½ΠΎΠΏΠΊΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ ΠΈΠ· TaskBar, Π½ΠΎ ΠΎΡΡΠ°Π²ΠΈΡΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ Π² ΡΠΏΠΈΡΠΊΠ΅.
Π‘ΠΊΡΡΡΡ Π³Π»Π°Π²Π½ΠΎΠ΅ ΠΌΠ΅Π½Ρ Π² Π°ΠΊΠ°ΡΠ½ΡΠ΅ ΠΈ ΠΎΡΡΠ°Π²ΠΈΡΡ ΡΠΎΠ»ΡΠΊΠΎ ΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΠ΅Π»ΡΡΠΊΠΎΠ΅
ΠΠ΄ΡΠ°Π²ΡΡΠ²ΡΠΉΡΠ΅,Ρ ΠΌΠ΅Π½Ρ ΡΠ°ΠΊΠ°Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ° ΠΡΡΡ ΡΠ°ΠΉΡ,Π½Π° ΡΠ°ΠΉΡΠ΅ ΠΠ»Π°Π²Π½ΠΎΠ΅ ΠΌΠ΅Π½Ρ ΠΈ ΠΌΠ΅Π½Ρ ΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΠ΅Π»Ρ,ΠΈ Ρ ΠΌΠ΅Π½Ρ.
ΠΠ°ΠΊ ΠΎΡΡΠ°Π²ΠΈΡΡ ΠΏΠΎΠ»Π΅ Π²Π²ΠΎΠ΄Π° Π·Π°ΠΏΠΎΠ»Π½Π΅Π½Π½ΡΠΌ?
ΠΡΡΡΡ Π΅ΡΡΡ ΠΏΡΠΎΡΡΠ΅Π½ΡΠΊΠ°Ρ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠΊΠ°: ΠΏΠΈΡΠ΅ΠΌ ΡΡΠΎ-Π½ΠΈΠ±ΡΠ΄Ρ Π² ΠΏΠΎΠ»Π΅ Π²Π²ΠΎΠ΄Π°, Π½Π°ΠΆΠΈΠΌΠ°Π΅ΠΌ Π½Π° ΠΊΠ½ΠΎΠΏΠΊΡ, ΠΈ Π½ΠΈΠΆΠ΅.
Π£ ΠΎΠΊΠ½Π° Inputbox ΠΎΡΡΠ°Π²ΠΈΡΡ ΡΠΎΠ»ΡΠΊΠΎ ΠΎΠ΄Π½Ρ ΠΊΠ½ΠΎΠΏΠΊΡ OK
ΠΏΠΎΠ΄ΡΠΊΠ°ΠΆΠΈΡΠ΅, ΠΏΠΎΠΆΠ°Π»ΡΠΉΡΡΠ°, ΠΊΠ°ΠΊ Ρ ΠΎΠΊΠ½Π° Inputbox ΠΎΡΡΠ°Π²ΠΈΡΡ ΡΠΎΠ»ΡΠΊΠΎ ΠΎΠ΄Π½Ρ ΠΊΠ½ΠΎΠΏΠΊΡ OK (ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ.
ΠΠ°ΠΊ ΡΠ΄Π΅Π»Π°ΡΡ input Π½Π΅Π²ΠΈΠ΄ΠΈΠΌΡΠΌ
Π ΡΡΠΎΠΉ ΡΡΠ±ΡΠΈΠΊΠ΅ ΠΡ Π½Π°ΠΉΠ΄Π΅ΡΠ΅ ΡΡΠΎΠΊΠΈ ΠΏΠΎ Javascript Π±ΠΈΠ±Π»ΠΈΠΎΡΠ΅ΠΊΠ΅ jQuery.
ΠΠ½ΠΈΠΌΠ°ΡΠΈΡ Π½Π°Π±ΠΎΡΠ° ΡΠ΅ΠΊΡΡΠ° Π½Π° jQuery
Π‘Π΅Π³ΠΎΠ΄Π½Ρ ΠΌΡ Π±Ρ Ρ ΠΎΡΠ΅Π»ΠΈ Π²Π°ΠΌ ΡΠ°ΡΡΠΊΠ°Π·Π°ΡΡ ΠΎ Π±ΠΈΠ±Π»ΠΈΠΎΡΠ΅ΠΊΠ΅ TypeIt β Π±Π΅ΡΠΏΠ»Π°ΡΠ½ΠΎΠΌ jQuery ΠΏΠ»Π°Π³ΠΈΠ½Π΅. Π‘ Π΅Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΌΠΎΠΆΠ½ΠΎ ΠΈΠΌΠΈΡΠΈΡΠΎΠ²Π°ΡΡ Π½Π°Π±ΠΎΡ ΡΠ΅ΠΊΡΡΠ°. ΠΡΠ»ΠΈ Π²ΡΡ Π½Π°ΡΡΡΠΎΠΈΡΡ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎ, ΡΠΎ ΠΌΠΎΠΆΠ½ΠΎ Π΄ΠΎΠ±ΠΈΡΡΡΡ ΠΎΡΠ΅Π½Ρ ΡΠ΅Π°Π»ΠΈΡΡΠΈΡΠ½ΠΎΠ³ΠΎ ΡΡΡΠ΅ΠΊΡΠ°.
ΠΡΠ΅ΠΌΠ΅Π½Π½Π°Ρ ΡΠΊΠ°Π»Π° Π½Π° jQuery
jQuery ΠΏΠ»Π°Π³ΠΈΠ½ Π΄Π»Ρ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ ΡΠΊΠ°Π»Ρ.
ΠΠ°ΠΌΠ΅ΡΠΊΠ°: ΠΠ΅ΡΠ΅Π·Π°Π³ΡΡΠ·ΠΊΠ° ΠΈ ΡΠ΅Π΄ΠΈΡΠ΅ΠΊΡ Π½Π° JavaScript
ΠΡΡΡΡΠ°Ρ Π·Π°ΠΌΠ΅ΡΠΊΠ°, Π³Π΄Π΅ Π²Ρ ΡΠΌΠΎΠΆΠ΅ΡΠ΅ Π½Π°ΠΉΡΠΈ ΠΏΠ°ΡΠΎΡΠΊΡ JS ΡΠ½ΠΈΠΏΠΏΠ΅ΡΠΎΠ² Π΄Π»Ρ ΠΏΠ΅ΡΠ΅Π·Π°Π³ΡΡΠ·ΠΊΠΈ ΠΈ ΠΏΠ΅ΡΠ΅Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΠ΅Π»Π΅ΠΉ ΡΠ΅ΡΠ΅Π· JavaScript.
Π ΠΈΡΡΠ΅ΠΌ Π΄ΠΈΠ°Π³ΡΠ°ΠΌΠΌΡ ΠΠ°Π½ΡΠ°
jQuery ΠΏΠ»Π°Π³ΠΈΠ½ Π΄Π»Ρ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ Π΄ΠΈΠ°Π³ΡΠ°ΠΌΠΌΡ ΠΠ°Π½ΡΠ°.
AJAX ΠΈ PHP: Π·Π°Π³ΡΡΠ·ΠΊΠ° ΡΠ°ΠΉΠ»Π°
ΠΡΠΈΠΌΠ΅Ρ ΡΠΎΠ³ΠΎ ΠΊΠ°ΠΊ ΠΎΡΡΡΠ΅ΡΡΠ²ΠΈΡΡ Π·Π°Π³ΡΡΠ·ΠΊΡ ΡΠ°ΠΉΠ»Π° ΡΠ΅ΡΠ΅Π· PHP ΠΈ jQuery ajax.
Stimed β ΡΡΠΈΠ»ΠΈ Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΡΡΡΠΎΠΊ
ΠΠ½ΡΠ΅ΡΠ΅ΡΠ½Π°Ρ Π±ΠΈΠ±Π»ΠΈΠΎΡΠ΅ΠΊΠ° Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΊΠΎΡΠΎΡΠΎΠΉ ΠΌΠΎΠΆΠ½ΠΎ Π·Π°Π΄Π°ΡΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ½Π½ΡΠΌ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ°ΠΌ ΡΡΡΠ°Π½ΠΈΡΡ ΠΎΡΠΎΠ±ΡΠ΅ ΡΡΠΈΠ»ΠΈ Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΡΡΡΠΎΠΊ.
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making a input type «file» hidden with button
I was wondering if this is doable? Google comes up with nothing.
Basically i want to my button to simulate when selected, allowing users to upload files. I’ve read its possible with labels, but i need to do with a button to do UX/UI
Currently my button looks like this: to this:
8 Answers 8
try an opacity of 0
plus fallbacks if you what to support older browsers
Something like this will do:
If you’re using Angular I suppose this pretty solution
you can easly make the analogy with other techno
You can use the following to make an input type «file» hidden with a button:
Simple Method with beautiful input file [type=»file»].
As all the other answers mention various ways of hiding the element, consider using opacity: 0 as well, as quoted from the MDN docs:
Note: opacity is used to hide the file input instead of visibility: hidden or display: none, because assistive technology interprets the latter two styles to mean the file input isn’t interactive.