::placeholder

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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

El pseudo-element CSS ::placeholder representa el text de marcador de posició d'un element de formulari.

::placeholder {
  color: blue;
  font-size: 1.5em;
}

Només un subconjunt de propietats CSS que s'aplica al pseudo-element ::first-line es pot utilitzar en una regla, utilitzant ::placeholder en el seu selector.

Nota: A Firefox, l'aparença del text del marcador de posició és de color gris translúcid per defecte.

Sintaxi

::placeholder

Exemple

HTML

<input placeholder="Type something here!">

CSS

input::placeholder {
  color: red;
  font-size: 1.2em;
  font-style: italic;
}

Resultat

Especificacions

Especificació Estat Comentari
CSS Pseudo-Elements Level 4
The definition of '::placeholder' in that specification.		 Working Draft Definició inicial.

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Descripció Chrome Firefox (Gecko) Edge Internet Explorer Opera Safari
Suport bàsic 57 51.0 (51.0)[1] No support No support 44 10.1
Suport parcial amb prefix Supported Supported Supported 10 -ms- Supported 5 -webkit-
Descripció Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Suport bàsic 57 57 52.0 (52.0) No support   10.3
Suport parcial amb prefix 2.1 -webkit- Supported Supported 10 -ms- 37 -webkit- 4.3 -webkit-

[1] Abans de Gecko 51.0 (Firefox 51.0 / Thunderbird 51.0 / SeaMonkey 2.48) Gecko va implementar aquest com a pseudo-element prefixat ::-moz-placeholder.

Vegeu també

Related Topics
  1. CSS
  2. CSS Reference
  3. CSS Selectors
  4. Guides
    1. Ùs de la pseudo-class :target en selectors
  5. Basic Selectors
    1. Selector Type
    2. Selector Class
    3. Selector ID
    4. Selector Universal
    5. Selector Atribut
  6. Combinators
    1. Combinador de germans adjacents
    2. Combinador general de germans
    3. Combinador de fills
    4. Selectors de descendents
    5. Column combinator [Traduir]
  7. Pseudo-classes
    1. :active
    2. :any-link
    3. :checked
    4. :blank [Traduir]
    5. :default
    6. :defined [Traduir]
    7. :dir()
    8. :disabled
    9. :empty
    10. :enabled
    11. :first
    12. :first-child
    13. :first-of-type
    14. :fullscreen
    15. :focus
    16. :focus-within
    17. :has() [Traduir]
    18. :host() [Traduir]
    19. :host-context() [Traduir]
    20. :hover
    21. :indeterminate
    22. :in-range
    23. :invalid
    24. :is() (:matches(), :any()) [Traduir]
    25. :lang
    26. :last-child
    27. :last-of-type
    28. :left
    29. :link
    30. :not()
    31. :nth-child
    32. :nth-last-child
    33. :nth-last-of-type
    34. :nth-of-type
    35. :only-child
    36. :only-of-type
    37. :optional
    38. :out-of-range
    39. :placeholder-shown
    40. :read-only
    41. :read-write
    42. :required
    43. :right
    44. :root
    45. :scope
    46. :target
    47. :valid
    48. :visited
    49. :where() [Traduir]
  8. Pseudo-elements
    1. ::-moz-progress-bar
    2. ::-moz-range-progress
    3. ::-moz-range-thumb
    4. ::-moz-range-track
    5. ::-ms-browse [Traduir]
    6. ::-ms-check [Traduir]
    7. ::-ms-clear [Traduir]
    8. ::-ms-expand [Traduir]
    9. ::-ms-fill
    10. ::-ms-fill-lower
    11. ::-ms-fill-upper
    12. ::-ms-reveal [Traduir]
    13. ::-ms-thumb
    14. ::-ms-ticks-after [Traduir]
    15. ::-ms-ticks-before [Traduir]
    16. ::-ms-tooltip [Traduir]
    17. ::-ms-track
    18. ::-ms-value [Traduir]
    19. ::-webkit-progress-bar
    20. ::-webkit-progress-value
    21. ::-webkit-slider-runnable-track
    22. ::-webkit-slider-thumb
    23. ::after (:after)
    24. ::backdrop
    25. ::before (:before)
    26. ::cue (:cue)
    27. ::first-letter (:first-letter)
    28. ::first-line (:first-line)
    29. ::grammar-error [Traduir]
    30. ::placeholder
    31. ::selection
    32. ::slotted() [Traduir]
    33. ::spelling-error [Traduir]