The difference between using
Array.of() and the
Array constructor is how they both handle a single integer argument:
const x = Array.of(3); const y = new Array(3); console.log(x); // output:  console.log(y); // output: array of 3 empty slots console.log(x.length); // output: 1 console.log(y.length); // output: 3
As you can see from the example above, using the
Array constructor with a single argument creates an empty array with its
length property set, whereas
Array.of() creates a new
Array with a single element. However, if you were to supply multiple arguments to either,
Array.of() or the
Array constructor, they would both yield the same result. To demonstrate this, let's look at the following example:
const x = Array.of(1, 2, 3); const y = new Array(1, 2, 3); console.log(x); // output: [1, 2, 3] console.log(y); // output: [1, 2, 3] console.log(x.length); // output: 3 console.log(y.length); // output: 3
You may use
Array(…) (as a function) and
new Array(…) interchangeably as both are equivalent.
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