HTMLImageElement.isMap

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HTMLImageElement proeprty isMap is a Boolean value which indicates that the image is to be used by a server-side image map. This may only be used on images located within an <a> 元素。

注意： For accessibility reasons, you should generally avoid using server-side image maps, as they require the use of a mouse. Use a client-side image map 代替。

句法

htmlImageElement.isMap = true|false;
let isMap = htmlImageElement.isMap;

值

A Boolean value which is true if the image is being used for a server-side image map; otherwise, the value is false .

用法注意事项

When an image marked as being part of a server-side image map is clicked, the browser constructs the string "?x,y", where x and y indicate the coordinates at which the mouse was clicked as offsets from the top-left corner of the image, specified in CSS pixels.

The browser then fetches that URL from the server and displays or downloads it depending on the value of the download 属性。

Unlike server-side image maps, client-side image maps don't cause the <img> element to adopt interactive content mode.

规范

规范	状态	注释
HTML 实时标准 The definition of 'HTMLImageElement.isMap' in that specification.	实时标准

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
`isMap`	Chrome 1	Edge 12	Firefox Yes	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android ?	Safari iOS Yes	Samsung Internet Android Yes

图例

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元数据

最后修改： Sep 26, 2019

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值

用法注意事项

规范

浏览器兼容性

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