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Introduction to the instanceof operatorIn JavaScript, judging the type of a variable with the typeof operator, a problem occurs when you store a value with a reference type using the TypeOf operator, which returns "object" regardless of what type of

Go from: Introduction to https://www.ibm.com/developerworks/cn/web/1306_jiangjj_jsinstanceof/instanceof OperatorsIn JavaScript, judging the type of a variable with the typeof operator, a problem occurs when you store a value with a reference type

Introduction to the instanceof operator In JavaScript, judging the type of a variable with the typeof operator, a problem occurs when you store a value with a reference type using the TypeOf operator, which returns "object" regardless of what type

The main content of this article comes from DeveloperWorks ...In JavaScript, judging the type of a variable with the typeof operator, a problem occurs when you store a value with a reference type using the TypeOf operator, which returns "object"

Introduction to the instanceof operator In JavaScript, to judge the type of a variable to try the typeof operator, it is a problem to store a value using a reference type when using the TypeOf operator, regardless of what type of object is

  This article is mainly on JavaScript instanceof for different constructors may return true for detailed analysis, the need for friends can come to the reference, I hope to help you. We know that the instanceof operator is used to check whether

Parsing instanceof in JavaScript may return true for different constructors This article mainly parses the instanceof in JavaScript for different constructors that may return true in detail. If you need it, you can refer to it for help. We know

We know that the instanceof operator is used to check whether an object is an instance of a constructor. The following lists the various scenarios in which it returns true. 1. Object obj was created through new constructor, then obj Instanceof

We know that the instanceof operator is used to check whether the object is an instance of a constructor. The following lists the scenarios in which true is returned.   1,Object obj is created through new constructor.OBJ instanceof

In JavaScript, typeof and Instanceof are two methods used to determine the comparison of data types, and the purpose of this article is to analyze the deficiencies of the two methods and propose an optimization scheme. typeof ----------------------