Web Reference: Testing Objects for Properties To check if a property on a given object exists or not, you can use the .hasOwnProperty() method. someObject.hasOwnProperty(someProperty) returns true or false depending on if the property is found on the object or not. W3Schools maintains a complete JavaScript reference, including all HTML and browser objects. The reference contains examples for all properties, methods and events, and is continuously updated according to the latest web standards. Hello, Champions of Code! 🌍🎖️ Embark on a thrilling quest with us as we delve deep into the mysterious world of JavaScript objects.
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