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In Operator Js

Machine generated alternative text: 9. In operator The "in" operator can check if an index exists in an array and will return true or false. Example: let cars 0 in cars 3 in cars 6 in cars C' Audi ' , 'BF,W' , returns returns returns 'Mini', t rue t rue false 'Bentley' , 'Porsche']; You can also check if a property exists in an object. Example: { first-Name : ' const person surname true true true false : 't Smi th", 'first-Name' in person 'surname' In person 'age' In person 'gendar' in person returns returns returns returns

Text in image:Machine generated alternative text: 9. In operator The "in" operator can check if an index exists in an array and will return true or false. Example: let cars 0 in cars 3 in cars 6 in cars C' Audi ' , 'BF,W' , returns returns returns 'Mini', t rue t rue false 'Bentley' , 'Porsche']; You can also check if a property exists in an object. Example: { first-Name : ' const person surname true true true false : 't Smi th", 'first-Name' in person 'surname' In person 'age' In person 'gendar' in person returns returns returns returns

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