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What is the purpose of the "this" keyword in JavaScript?

Asked on Jun 28, 2025

Answer

The "this" keyword in JavaScript refers to the context in which a function is executed, allowing access to properties and methods of the object it belongs to. It is dynamic and can change depending on how a function is called.

const person = {
            name: "Alice",
            greet: function() {
                console.log("Hello, my name is " + this.name);
            }
        };

        person.greet(); // Output: Hello, my name is Alice

Additional Comment:

In the example, "this" refers to the "person" object, allowing access to its "name" property.
The value of "this" is determined by the call-site, which is where the function is invoked.
In a method, "this" refers to the object the method is called on.
In global functions, "this" refers to the global object (window in browsers) unless in strict mode, where it is undefined.

✅ Answered with JavaScript best practices.

Ask any question about JavaScript here... and get an instant response.

What is the purpose of the "this" keyword in JavaScript?

Asked on Jun 28, 2025

Answer

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