regex match whole sequence javascript code example

Example 1: js match any number string

const match = 'some/path/123'.match(/\/(\d+)/)
const id = match[1] // '123'

Example 2: javascript regex match character from a set of characters

// 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