path.isAbsolute

History

path.isAbsolute(path): boolean

Attributes

path:string

Returns:boolean

The path.isAbsolute() method determines if the literal path is absolute. Therefore, it’s not safe for mitigating path traversals.

If the given path is a zero-length string, false will be returned.

For example, on POSIX:

path.isAbsolute('/foo/bar');   // true
path.isAbsolute('/baz/..');    // true
path.isAbsolute('/baz/../..'); // true
path.isAbsolute('qux/');       // false
path.isAbsolute('.');          // false

JavaScript

On Windows:

path.isAbsolute('//server');    // true
path.isAbsolute('\\\\server');  // true
path.isAbsolute('C:/foo/..');   // true
path.isAbsolute('C:\\foo\\..'); // true
path.isAbsolute('bar\\baz');    // false
path.isAbsolute('bar/baz');     // false
path.isAbsolute('.');           // false

JavaScript

A TypeError is thrown if path is not a string.