How to use the hasOwnProperty() method In Javascript
The hasOwnProperty() method checks if an object has a property with the specified name. It returns true if the object has the property directly on itself (not inherited from its prototype chain), otherwise it returns false.
const obj = { name: "John", age: 30 };
console.log(obj.hasOwnProperty("name")); // Output: true
console.log(obj.hasOwnProperty("gender")); // Output: false
How to check if an object has a specific property in JavaScript?
In JavaScript, you can check if an object has a specific property using various methods, such as the hasOwnProperty() method, the in operator, or using the Object.keys() method.
Here’s how you can achieve it using these methods:
Table of Content
- Using the hasOwnProperty() method
- Using the in operator
- Using the Object.keys() method
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