JavaScript Array()
The Array() Constructor
The Array() constructor creates Array objects.
Array objects are used to store multiple values in a single variable.
Syntax
new Array()
new Array(number)
new Array(element1, element2, ..., elementN)
Array()
Array(number)
Array(element1, element2, ..., elementN)
Examples
new Array()
new Array(3)
new Array("3")
new Array("Saab", "Volvo", "BMW")
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Array()
Array(3)
Array("3")
Array("Saab", "Volvo", "BMW")
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Explanation
| Syntax | Description |
|---|---|
| new Array() | Creates an empty array. |
| new Array(x) | Creates an array with x empty spots. |
| new Array(element1) | Creates an array with one element. |
| new Array(element1, ..., elementN) |
Creates an array with multiple elements. |
Important Warning
Use array literals [ ] instead of the Array() constructor when possible.
new Array(3) creates an empty array with length 3, not an array containing the number 3.
Arrays are normally created with [].
new Array(number) is the special dangerous case.
Array Literal (Preferred)
The recommended way to create an array is with an array literal:
Object Hieraky
Array objects inherit from Object.
Object └─ Array
Array() Questions
| Question | Answer |
|---|---|
| Constructor Type | Function |
| Creates | Array objects |
| Inherits From | Object |
Browser Support
Array() is an ECMAScript1 (JavaScript 1997) feature.
It is supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera |
