FileSystemEntry.isDirectory

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句法
范例
规范
浏览器兼容性
另请参阅
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这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

只读 isDirectory 特性为 FileSystemEntry interface is true if the entry represents a directory (meaning it's a FileSystemDirectoryEntry ) 和 false if it's not.

还可以使用 isFile to determine if the entry is a file.

You should not assume that any entry which isn't a directory is a file or vice-versa. There are other types of file descriptors on many operating systems. Be sure to use both isDirectory and isFile as needed to ensure that the entry is something you know how to work with.

句法

var isDirectory = FileSystemEntry.isDirectory;

值

A Boolean indicating whether or not the FileSystemEntry is a directory.

范例

This example shows how this property might be used to determine whether to process the entry as a directory or file. If the entry is neither, an error handler is called with an appropriate message.

if (entry.isDirectory) {
  processSubdirectory(entry);
} else if (entry.isFile) {
  processFile(entry);
} else {
  displayErrorMessage("Unsupported file system entry specified.");
}

规范

规范	状态	注释
文件和目录条目 API The definition of 'isDirectory' in that specification.	草案	最初的规范。

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
`isDirectory`	Chrome 8	Edge 79	Firefox 50	IE No	Opera No	Safari 11.1	WebView Android ≤37	Chrome Android 18	Firefox Android 50	Opera Android No	Safari iOS 11.3	Samsung Internet Android Yes

图例

完整支持
不支持
实验。期望将来行为有所改变。

另请参阅

元数据

最后修改： Dec 25, 2019

文件和目录条目 API
FileSystemEntry
特性
1. filesystem
2. fullPath
3. isDirectory
4. isFile
5. 名称
方法
文件系统 API 相关页面

在此页

句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题