`path.isAbsolute()`

Determines whether a path is an absolute path.

Since Node 0.11 Spec ↗

Syntax

path.isAbsolute(path)

Parameters

Name	Type	Required	Description
`path`	`string`	Yes	The path to test.

Returns

boolean — true if the path is absolute.

Examples

import { isAbsolute } from 'node:path';

console.log(isAbsolute('/etc/hosts'));
console.log(isAbsolute('src/index.js'));

Output

true
false

import { isAbsolute, resolve } from 'node:path';

const input = 'data/file.txt';
const full = isAbsolute(input) ? input : resolve(input);
console.log(full);

Output

/home/user/project/data/file.txt

Notes

POSIX treats a leading `/` as absolute; Windows also accepts drive letters and UNC paths. An empty string is not absolute.