What is the significance of 'this' keyword in JS?

Question

Accepted Answer

The 'this' keyword in JS refers to the object that is currently executing the code.

The value of 'this' depends on how a function is called.
In a method, 'this' refers to the object that the method belongs to.
In a regular function, 'this' refers to the global object (window in a browser).
In an event handler, 'this' refers to the element that triggered the event.
The value of 'this' can be explicitly set using call(), apply(), or bind() methods.

Accepted Answer

In JavaScript, the this keyword refers to the current execution context, which can vary depending on how a function is called. The significance of this is that it allows functions to access and manipulate the properties and methods of their parent object.

The value of this is determined at runtime, based on how the function is called. In general, there are four ways that this can be bound to a value:

Global context: If a function is called without any context, this will default to the global object (e.g. window in a browser or global in Node.js).
Object context: If a function is called as a method of an object, this will be bound to the object.
Constructor context: If a function is called with the new keyword to create a new object, this will be bound to the newly created object.
Explicit context: If a function is called using call() or apply(), this will be explicitly bound to the object passed as the first argument.

What is the significance of 'this' keyword in JS?

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