JS: Array.of

New in ES2015.

Array.of ( …items )

Return a new array with elements of …items.

console.log( Array.of(3)) // [3]
console.log( Array.of(3,4)) // [3, 4]
console.log( Array.of(3,4, 'x')) // [3, 4, 'x']

Array.of is provided to replace the complex behavior of array constructor.

〔►see JS: Array Constructor〕

Reference

ECMAScript® 2016 Language Specification#sec-array.of