Answers for "js check if array key exists"

16

javascript if array key exists

var person={"name":"Billy","age":20}
person.hasOwnProperty("name"); // true
person.hasOwnProperty("sex"); // false
Posted by: Guest on July-22-2019
5

javascript hashtable contains key

if (obj.hasOwnProperty("key1")) {
  ...
}
Posted by: Guest on March-01-2020
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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