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  1. 開発者向けのウェブ技術
  2. Web API
  3. HTMLSelectElement
  4. willValidate
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HTMLSelectElement: willValidate プロパティ

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.

willValidate は HTMLSelectElement インターフェイスの読み取り専用のプロパティで、この <select> 要素が制約検証の対象となる候補であるかどうかを示します。 例えば、disabled プロパティが true である場合など、何か制約検証を妨げる条件がある場合は、このプロパティは false となります。

In this article

値

論理値です。

仕様書

Specification
HTML
# dom-cva-willvalidate-dev

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  1. HTML DOM API
  2. HTMLSelectElement
  3. インスタンスプロパティ
    1. autocomplete
    2. disabled
    3. form
    4. labels
    5. length
    6. multiple
    7. name
    8. options
    9. required
    10. selectedIndex
    11. selectedOptions
    12. size
    13. type
    14. validationMessage
    15. validity
    16. value
    17. willValidate
  4. インスタンスメソッド
    1. add()
    2. checkValidity()
    3. item()
    4. namedItem()
    5. remove()
    6. reportValidity()
    7. setCustomValidity()
    8. showPicker()
  5. 継承
    1. HTMLElement
    2. Element
    3. Node
    4. EventTarget
  6. HTML DOM に関連するページ
    1. BeforeUnloadEvent
    2. DOMStringMap
    3. ErrorEvent
    4. HTMLAnchorElement
    5. HTMLAreaElement
    6. HTMLAudioElement
    7. HTMLBRElement
    8. HTMLBaseElement
    9. HTMLBodyElement
    10. HTMLButtonElement
    11. HTMLCanvasElement
    12. HTMLDListElement
    13. HTMLDataElement
    14. HTMLDataListElement
    15. HTMLDialogElement
    16. HTMLDivElement
    17. HTMLDocument
    18. HTMLElement
    19. HTMLEmbedElement
    20. HTMLFieldSetElement
    21. HTMLFormControlsCollection
    22. HTMLFormElement
    23. HTMLFrameSetElement
    24. HTMLGeolocationElement
    25. HTMLHRElement
    26. HTMLHeadElement
    27. HTMLHeadingElement
    28. HTMLHtmlElement
    29. HTMLIFrameElement
    30. HTMLImageElement
    31. HTMLInputElement
    32. HTMLLIElement
    33. HTMLLabelElement
    34. HTMLLegendElement
    35. HTMLLinkElement
    36. HTMLMapElement
    37. HTMLMediaElement
    38. HTMLMenuElement
    39. HTMLMetaElement
    40. HTMLMeterElement
    41. HTMLModElement
    42. HTMLOListElement
    43. HTMLObjectElement
    44. HTMLOptGroupElement
    45. HTMLOptionElement
    46. HTMLOptionsCollection
    47. HTMLOutputElement
    48. HTMLParagraphElement
    49. HTMLPictureElement
    50. HTMLPreElement
    51. HTMLProgressElement
    52. HTMLQuoteElement
    53. HTMLScriptElement
    54. HTMLSourceElement
    55. HTMLSpanElement
    56. HTMLStyleElement
    57. HTMLTableCaptionElement
    58. HTMLTableCellElement
    59. HTMLTableColElement
    60. HTMLTableElement
    61. HTMLTableRowElement
    62. HTMLTableSectionElement
    63. HTMLTemplateElement
    64. HTMLTextAreaElement
    65. HTMLTimeElement
    66. HTMLTitleElement
    67. HTMLTrackElement
    68. HTMLUListElement
    69. HTMLUnknownElement
    70. HTMLVideoElement
    71. HashChangeEvent
    72. History
    73. ImageData
    74. Location
    75. MessageChannel
    76. MessageEvent
    77. MessagePort
    78. Navigator
    79. PageRevealEvent
    80. PageSwapEvent
    81. PageTransitionEvent
    82. Plugin
    83. PluginArray
    84. PromiseRejectionEvent
    85. RadioNodeList
    86. TimeRanges
    87. UserActivation
    88. ValidityState
    89. Window
    90. WorkletGlobalScope
  7. ガイド
    1. JavaScript で queueMicrotask() によるマイクロタスクの使用
    2. In depth: Microtasks and the JavaScript runtime environment

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