Hoisting...

String trim whitepace characters

Characters treated as whitespace by String.trim

Novice Fuzzer

Created bypiprett

Created May 16, 2026

Updated Sep 5, 2026

Unable to render tweet button

Detecting browser...

CategoryJavaScript Syntax

VisibilityPublic

TypeJS

CharsetUTF-8

Template used:

const c = String.fromCodePoint(i);
if ((c+"hello"+c).trim() === "hello") log(i);

Sample payloads

const c = String.fromCodePoint(i);
if ((c+"hello"+c).trim() === "hello") alert(i);