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getFileType() function
This API is provided as a preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.
获取文件后缀名
Signature:
typescript
declare function getFileType(file: File): string | undefined;declare function getFileType(file: File): string | undefined;Parameters
| Parameter | Type | Description |
|---|---|---|
| file | File | 源文件 |
Returns:
string | undefined
文件后缀名
Example
getFileType(fileInput.files[0]); // 返回文件后缀名（如 'jpg'）