JavaScript / ECMAScript

Hidden File (Dotfile) in JS

Matches Unix-style hidden files (dotfiles) like .gitignore or .env.

Try it in the JS tester →

Pattern

regexJS
^\.[^.\s/\\][^/\\]*$

JavaScript / ECMAScript code

jsJavaScript
const re = new RegExp("^\\.[^.\\s/\\\\][^/\\\\]*$", "");
const input = ".gitignore";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).

How the pattern works

`^\.` requires leading dot. `[^.\s/\\]` requires the next character to not be another dot, whitespace, or slash. `[^/\\]*$` allows any additional non-slash characters.

Examples

Input

.gitignore

Matches

  • .gitignore

Input

.env.local

Matches

  • .env.local

Input

..

No match

—

Same pattern, other engines

Python (re)

Supported

See how this pattern looks (and behaves) in Python's stdlib `re` module.

Go (RE2)

Supported

See how this pattern looks (and behaves) in Go's `regexp` package (RE2 engine).

← Back to Hidden File (Dotfile) overview (all engines)