HTMLOptionElement

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HTMLOptionElement interface represents <option> elements and inherits all classes and methods of the HTMLElement 接口。

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  a:hover text { fill: #0095DD; pointer-events: all;}

特性

继承的特性来自其父级， HTMLElement .

HTMLOptionElement.defaultSelected: 是 布尔 that contains the initial value of the selected HTML attribute, indicating whether the option is selected by default or not.
HTMLOptionElement.disabled: 是 布尔 representing the value of the 被禁用 HTML attribute, which indicates that the option is unavailable to be selected. An option can also be disabled if it is a child of an <optgroup> element that is disabled.
HTMLOptionElement.form 只读: 是 HTMLFormElement representing the same value as the form of the corresponding <select> element, if the option is a descendant of a <select> element, or null if none is found.
HTMLOptionElement.index 只读: 是 long representing the position of the option within the list of options it belongs to, in tree-order. If the option is not part of a list of options, like when it is part of the <datalist> element, the value is 0 .
HTMLOptionElement.label 只读: 是 DOMString that reflects the value of the label HTML attribute, which provides a label for the option. If this attribute isn't specifically set, reading it returns the element's text content.
HTMLOptionElement.selected: 是 布尔 that indicates whether the option is currently selected.
HTMLOptionElement.text: 是 DOMString that contains the text content of the element.
HTMLOptionElement.value: 是 DOMString that reflects the value of the 值 HTML attribute, if it exists; otherwise reflects value of the Node.textContent 特性。

方法

继承方法来自其父级 HTMLElement .

Option(): Is a constructor creating an HTMLOptionElement object. It has four values: the text to display, text , the value associated, value ，值对于 defaultSelected , and the value of selected . The last three values are optional.

规范

规范	状态	注释
HTML 实时标准 The definition of 'HTMLOptionElement' in that specification.	实时标准
HTML5 The definition of 'HTMLOptionElement' in that specification.	推荐	A constructor, `Option()` , has been added. `form` property can be the `null` 值。
DOM (文档对象模型) 2 级 HTML 规范 The definition of 'HTMLOptionElement' in that specification.	过时	`selected` property changed its meaning: it now indicates if the option is currently selected and no longer if it was initally selected. `defaultSelected` property is no longer read-only.
DOM (文档对象模型) 1 级规范 The definition of 'HTMLOptionElement' in that specification.	过时	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`HTMLOptionElement`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`defaultSelected`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`被禁用`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`form`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`index`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`label`	Chrome Yes	Edge 12	Firefox 7 7 不支持 ? — 7 Prior to Firefox 7 the `label` property incorrectly returned an empty string if not defined instead of returning the element's text content.	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 7 7 不支持 ? — 7 Prior to Firefox 7 the `label` property incorrectly returned an empty string if not defined instead of returning the element's text content.	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`selected`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`text`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`value`	Chrome Yes	Edge 12	Firefox Yes	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持

另请参阅

The HTML element implementing this interface: <option> .

元数据

最后修改： May 26, 2020

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特性

方法

规范

浏览器兼容性

图例

另请参阅

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