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Expressions and operators
This chapter documents all the JavaScript language operators, expressions and keywords.
JavaScript
Operators
in operator
The
in
operator
returns
true
if the specified property is in the specified object.
JavaScript
Operator
operator
Relational Operators
Expressions and operators
This chapter describes JavaScript's expressions and operators, including assignment, comparison, arithmetic, bitwise, logical, string, ternary and more.
beginner
Beginner
Expressions
Guide
JavaScript
Operators
instanceof
The
instanceof
operator
tests whether an object has in its prototype chain the
prototype
property of a constructor.
instanceof
JavaScript
Object
operator
Operator
Prototype
Relational Operators
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