instanceof

Java Coding Problems, Second Edition - Published by Packt

Create mixins which work with instanceof (friendly for unit tests).

💣 A base class for creating custom JavaScript error classes

Enhances a JavaScript class by adding an is<Class> property to compare types between realms.

The most simple, customizable and easy to use JavaScript standard inheritance library

Adds InstanceOf Expression as Twig Extension

`modern-errors` plugin to execute class-specific logic.

Simple functionality alternative to check data type references such as typeof and instanceof.

Check if a value is an `Error` instance.

Create errors that can be both thrown and returned. Make error handling easier for both JavaScript and TypeScript.

Detects precise type of objects like `Array()`, `new Number(1)`, `new Boolean(true)`, etc

测试用例s

Test whether a value has in its prototype chain a specified constructor as a prototype property.

Determine the name of a value's constructor.

Implement prototypical inheritance by replacing the prototype of one constructor with the prototype of another constructor.

The instanceof mechanism cross package/module versions.

Test if an object's prototype chain contains a provided prototype.

Test if a value is a regular expression.