Avoid Array constructors

Cette page n'est pas encore disponible en français, sa traduction est en cours.
Si vous avez des questions ou des retours sur notre projet de traduction actuel, n'hésitez pas à nous contacter.

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()
https://static.datadoghq.com/static/images/logos/github_avatar.svg https://static.datadoghq.com/static/images/logos/vscode_avatar.svg jetbrains

Seamless integrations. Try Datadog Code Analysis