Web Reference: Creating an Array Using an array literal is the easiest way to create a JavaScript Array. Syntax: const array_name = [item1, item2, ...]; Jul 10, 2025 · Arrays can be created using a constructor with a single number parameter. An array is created with its length property set to that number, and the array elements are empty slots. The preferred way is to always use the literal syntax with square brackets; its behaviour is predictable for any number of items, unlike Array 's. What's more, Array is not a keyword, and although it is not a realistic situation, someone could easily overwrite it:
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