Avoid Array constructors

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Metadata

ID: javascript-code-style/no-array-constructor

Language: JavaScript

Severity: Warning

Category: Error Prone

Description

Array literal notation cannot be redefined. It is preferred over the Array constructor.

The Array constructor is a common source of errors as it might behave unexpectedly when used with a single parameter. It creates an array with of N length instead of initializing an Array with the provided param.

Non-Compliant Code Examples

new Array();
new Array;
new Array(x, y);
new Array(0, 1, 2);

Compliant Code Examples

new Array(x)
Array(x)
new Array(9)
Array(9)
new foo.Array()
foo.Array()
new Array.foo
Array.foo()