Review a small utility
const activeCustomers=customers.filter((customer)=>customer.active);
Inspect the processed JavaScript before replacing the source.
Match a…
/^[^\s@]+@[^\s@]+\.[^\s@]+$/iNo matches
Start from an editable regular expression pattern. Use it to inspect or prepare a focused JavaScript snippet. Patterns and test text stay in this browser.
See matches and capture groups while you edit. The active pattern and result are saved locally.
Toolify tests JavaScript regular expressions. Other engines can handle syntax differently. Copy or download match output as text.
const activeCustomers=customers.filter((customer)=>customer.active);
Inspect the processed JavaScript before replacing the source.
Patterns and test text stay in this browser. The active pattern and result are saved locally.
JavaScript regular expression syntax, Unicode text. Toolify tests JavaScript regular expressions. Other engines can handle syntax differently.
Copy or download match output as text.
Complex expressions can take a long time on adversarial input.
Format JavaScript with the Prettier parser.
JavaScript tools
Format JavaScript with the Prettier parser.
Minify JavaScript locally with Terser.
JavaScript tools
Minify JavaScript locally with Terser.
Expand compressed JavaScript into readable code.
JavaScript tools
Expand compressed JavaScript into readable code.