JavaScript this keyword Bangla Tutorial Part 24

In this tutorial, we will learn about the ‘this’ keyword in JavaScript and how to use it effectively in our code.

What is the ‘this’ keyword?

The ‘this’ keyword refers to the object it belongs to. It has different values depending on where it is used:

• Inside a method, ‘this’ refers to the owner object.
• When used in a function, ‘this’ refers to the global object.
• When used in an event, ‘this’ refers to the element that fired the event.

Using ‘this’ in JavaScript

Let’s take a look at some examples of how to use the ‘this’ keyword in JavaScript:

“`javascript
// Example 1
var person = {
firstName: “John”,
lastName: “Doe”,
fullName: function() {
return this.firstName + ” ” + this.lastName;
}
};

// Example 2
function myFunction() {
alert(this.value);
}
“`

Benefits of using ‘this’ keyword

Using the ‘this’ keyword allows us to access object properties and methods within the object itself, making our code more organized and easier to read.

Conclusion

Understanding and effectively using the ‘this’ keyword is an important aspect of JavaScript programming. It allows us to access and manipulate object properties and methods, making our code more efficient and readable.

That’s all for JavaScript this keyword Bangla Tutorial Part 24. Stay tuned for more tutorials on webdescode.