Avoid empty character classes in regular expressions Cette page n'est pas encore disponible en français, sa traduction est en cours.
Si vous avez des questions ou des retours sur notre projet de traduction actuel,
n'hésitez pas à nous contacter .
TRY THIS RULE ID: javascript-best-practices/no-empty-character-class
Language: JavaScript
Severity: Error
Category: Best Practices
Description In regular expressions, empty character classes do not match anything, and were likely used in error.
Non-Compliant Code Examples var foo = /^abc[]/ ;
var foo = /foo[]bar/ ;
if ( foo . match ( /^abc[]/ )) {}
if ( /^abc[]/ . test ( foo )) {}
var foo = /[]]/ ;
var foo = /\[[]/ ;
var foo = /\\[\\[\\]a-z[]/ ;
var foo = /[]]/d;
Compliant Code Examples var foo = /^abc[a-zA-Z]/ ;
var regExp = new RegExp ( "^abc[]" );
var foo = /^abc/ ;
var foo = /[\\[]/ ;
var foo = /[\\]]/ ;
var foo = /[a-zA-Z\\[]/ ;
var foo = /[[]/ ;
var foo = /[\\[a-z[]]/ ;
var foo = /[\\-\\[\\]\\/ \\ { \\ } \\ ( \\ ) \\ * \\ + \\ ? \\ . \\\\ ^ \\ $ \\ | ] / g ;
var foo = /\\s*:\\s*/gim ;
var foo = /[\\]]/uy ;
var foo = /[\\]]/s;
var foo = /[\\]]/d;
var foo = /\[]/
Seamless integrations. Try Datadog Code Analysis
