Answers for "if array key exists js"

16

javascript does key exist

var person={"name":"Billy","age":20}
person.hasOwnProperty("name"); // true
person.hasOwnProperty("sex"); // false
Posted by: Guest on July-22-2019
8

check if a key exists in an object javascript

"key" in obj // true, regardless of the actual value
Posted by: Guest on March-30-2020

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