我有一個基本的檔案輸入，我想允許用戶上傳整個目錄
<input
type='file'
directory=''
webkitdirectory=''
className={cssClass}
onChange={processFiles}
/>
這給出了打字稿錯誤
Type '{ type: "file"; directory: string; webkitdirectory: string; className: string; }' is not assignable to type 'DetailedHTMLProps<InputHTMLAttributes<HTMLInputElement>, HTMLInputElement>'.
Property 'directory' does not exist on type 'DetailedHTMLProps<InputHTMLAttributes<HTMLInputElement>, HTMLInputElement>'.ts(2322)
uj5u.com熱心網友回復：
到今天為止，React 提供的當前型別似乎還沒有一種“原生”的方式來做到這一點。你可以在 React 的 repo 上查看這個問題。最好的方法似乎是自己宣告這些型別：
declare module 'react' {
interface InputHTMLAttributes<T> extends HTMLAttributes<T> {
// extends React's HTMLAttributes
directory?: string;
webkitdirectory?: string;
}
}
根據這個問題的評論。
這種型別定義只會讓 Typescript 變冷，但請記住，<input />即使 React 不知道這一點，React 也會將它無法識別的 props 轉發給底層 DOM 元素（aka），從而使這項作業正常作業（查看 React 網站上的這篇博文）。
uj5u.com熱心網友回復：
https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/webkitdirectory 認為您只需要這個。而不是目錄屬性。
uj5u.com熱心網友回復：
我似乎directory您嘗試分配給input元素的屬性無效：
<input
type='file'
directory='' <- This
webkitdirectory=''
className={cssClass}
onChange={processFiles}
/>
directory如果您查看 MDN 檔案，您會發現檔案輸入元素上沒有命名屬性。您應該只使用該webkitdirectory屬性。
您應該注意到 MDN 宣告：
雖然最初僅針對基于 WebKit 的瀏覽器實作，但 webkitdirectory 也可用于 Microsoft Edge 以及 Firefox 50 及更高版本。但是，即使它具有相對廣泛的支持，它仍然不是標準的，除非您別無選擇，否則不應使用。
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#non-standard_attributes
編輯：這似乎是反應提供的型別的問題。看一下 HTMLInputElement：
interface HTMLInputElement extends HTMLElement {
/** Sets or retrieves a comma-separated list of content types. */
accept: string;
/**
* Sets or retrieves how the object is aligned with adjacent text.
* @deprecated
*/
align: string;
/** Sets or retrieves a text alternative to the graphic. */
alt: string;
/** Specifies whether autocomplete is applied to an editable text field. */
autocomplete: string;
capture: string;
/** Sets or retrieves the state of the check box or radio button. */
checked: boolean;
/** Sets or retrieves the state of the check box or radio button. */
defaultChecked: boolean;
/** Sets or retrieves the initial contents of the object. */
defaultValue: string;
dirName: string;
disabled: boolean;
/** Returns a FileList object on a file type input object. */
files: FileList | null;
/** Retrieves a reference to the form that the object is embedded in. */
readonly form: HTMLFormElement | null;
/** Overrides the action attribute (where the data on a form is sent) on the parent form element. */
formAction: string;
/** Used to override the encoding (formEnctype attribute) specified on the form element. */
formEnctype: string;
/** Overrides the submit method attribute previously specified on a form element. */
formMethod: string;
/** Overrides any validation or required attributes on a form or form elements to allow it to be submitted without validation. This can be used to create a "save draft"-type submit option. */
formNoValidate: boolean;
/** Overrides the target attribute on a form element. */
formTarget: string;
/** Sets or retrieves the height of the object. */
height: number;
/** When set, overrides the rendering of checkbox controls so that the current value is not visible. */
indeterminate: boolean;
readonly labels: NodeListOf<HTMLLabelElement> | null;
/** Specifies the ID of a pre-defined datalist of options for an input element. */
readonly list: HTMLElement | null;
/** Defines the maximum acceptable value for an input element with type="number".When used with the min and step attributes, lets you control the range and increment (such as only even numbers) that the user can enter into an input field. */
max: string;
/** Sets or retrieves the maximum number of characters that the user can enter in a text control. */
maxLength: number;
/** Defines the minimum acceptable value for an input element with type="number". When used with the max and step attributes, lets you control the range and increment (such as even numbers only) that the user can enter into an input field. */
min: string;
minLength: number;
/** Sets or retrieves the Boolean value indicating whether multiple items can be selected from a list. */
multiple: boolean;
/** Sets or retrieves the name of the object. */
name: string;
/** Gets or sets a string containing a regular expression that the user's input must match. */
pattern: string;
/** Gets or sets a text string that is displayed in an input field as a hint or prompt to users as the format or type of information they need to enter.The text appears in an input field until the user puts focus on the field. */
placeholder: string;
readOnly: boolean;
/** When present, marks an element that can't be submitted without a value. */
required: boolean;
selectionDirection: "forward" | "backward" | "none" | null;
/** Gets or sets the end position or offset of a text selection. */
selectionEnd: number | null;
/** Gets or sets the starting position or offset of a text selection. */
selectionStart: number | null;
size: number;
/** The address or URL of the a media resource that is to be considered. */
src: string;
/** Defines an increment or jump between values that you want to allow the user to enter. When used with the max and min attributes, lets you control the range and increment (for example, allow only even numbers) that the user can enter into an input field. */
step: string;
/** Returns the content type of the object. */
type: string;
/**
* Sets or retrieves the URL, often with a bookmark extension (#name), to use as a client-side image map.
* @deprecated
*/
useMap: string;
/** Returns the error message that would be displayed if the user submits the form, or an empty string if no error message. It also triggers the standard error message, such as "this is a required field". The result is that the user sees validation messages without actually submitting. */
readonly validationMessage: string;
/** Returns a ValidityState object that represents the validity states of an element. */
readonly validity: ValidityState;
/** Returns the value of the data at the cursor's current position. */
value: string;
/** Returns a Date object representing the form control's value, if applicable; otherwise, returns null. Can be set, to change the value. Throws an "InvalidStateError" DOMException if the control isn't date- or time-based. */
valueAsDate: Date | null;
/** Returns the input field value as a number. */
valueAsNumber: number;
readonly webkitEntries: ReadonlyArray<FileSystemEntry>;
webkitdirectory: boolean;
/** Sets or retrieves the width of the object. */
width: number;
/** Returns whether an element will successfully validate based on forms validation rules and constraints. */
readonly willValidate: boolean;
/** Returns whether a form will validate when it is submitted, without having to submit it. */
checkValidity(): boolean;
reportValidity(): boolean;
/** Makes the selection equal to the current object. */
select(): void;
/**
* Sets a custom error message that is displayed when a form is submitted.
* @param error Sets a custom error message that is displayed when a form is submitted.
*/
setCustomValidity(error: string): void;
setRangeText(replacement: string): void;
setRangeText(replacement: string, start: number, end: number, selectionMode?: SelectionMode): void;
/**
* Sets the start and end positions of a selection in a text field.
* @param start The offset into the text field for the start of the selection.
* @param end The offset into the text field for the end of the selection.
* @param direction The direction in which the selection is performed.
*/
setSelectionRange(start: number | null, end: number | null, direction?: "forward" | "backward" | "none"): void;
showPicker(): void;
/**
* Decrements a range input control's value by the value given by the Step attribute. If the optional parameter is used, it will decrement the input control's step value multiplied by the parameter's value.
* @param n Value to decrement the value by.
*/
stepDown(n?: number): void;
/**
* Increments a range input control's value by the value given by the Step attribute. If the optional parameter is used, will increment the input control's value by that value.
* @param n Value to increment the value by.
*/
stepUp(n?: number): void;
addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLInputElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLInputElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
}
可以看到沒有webkitdirectory定義屬性
轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/497071.html