What will the output be when checking for property existence with hasOwnProperty?

The method hasOwnProperty is a built-in function in JavaScript that is used to determine whether an object has a specified property as its own (not inherited) property. When you call this method on an object and provide a property name as an argument, it returns true if the object contains that property as part of its own structure.

For example, if you have an object defined as follows:

let obj = {
    name: "Alice",
    age: 30
};

Using obj.hasOwnProperty('name') would return true because 'name' is a direct property of obj.

The method is very reliable for distinguishing between properties that are directly defined on the object and those that are inherited through the object's prototype chain. This makes it an essential tool in scenarios where you need to check the object’s own properties without interference from its prototype.

Thus, if the property you are checking exists directly on the object, the output is definitively true. This leads to the conclusion that the correct response to the question regarding the output of hasOwnProperty when checking for a property’s existence is indeed true.