JavaScript Regex correspond à un ensemble de caractères
// Regex - Any character from a set of characters
console.log(/[0123456789]/.test("in 1992")); // true
console.log(/[0-9]/.test("in 1992")); // true
console.log(/[abc]/.test("def")); // false
console.log(/[abc]/.test("cdef")); // true
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