As a web developer, it’s essential to have an understanding of how to determine the size of the viewport in a user’s browser.
The viewport is the portion of a web page that’s visible to the user.
Knowing the viewport size can be useful in various scenarios, such as adjusting the layout of a website to accommodate different screen sizes or determining the position of elements on a page.
In this Javascript tutorial, we’ll cover the basics of determining the viewport dimensions in JavaScript and provide you with code examples to get you started.
The Viewport
Before diving into the code, let’s take a moment to understand what the viewport is.
The viewport is the user-visible portion of a web page.
It refers to the area of the browser window in which the page is displayed.
The viewport dimensions are typically expressed in pixels.
Getting the Viewport Dimensions
There are several ways to determine the viewport dimensions in JavaScript.
The most straightforward method is to use the window.innerWidth and window.innerHeight properties.
These properties return the width and height of the viewport, respectively, in pixels.
Here’s a simple example that demonstrates how to get the viewport dimensions:
let viewportWidth = window.innerWidth;
let viewportHeight = window.innerHeight;
console.log(`Viewport width: ${viewportWidth}`);
console.log(`Viewport height: ${viewportHeight}`);In the example above, we use the window.innerWidth property to get the viewport width, and the window.innerHeight property to get the viewport height.
We then log the values to the console so that we can see the results.
Note that window.innerWidth and window.innerHeight are supported in all modern browsers, including Internet Explorer 9 and later.
Conclusion
Determining the viewport dimensions in JavaScript is a simple and straightforward task.
By using the window.innerWidth and window.innerHeight properties, you can easily get the width and height of the viewport in pixels.
With this information, you can create dynamic web pages that adjust to different screen sizes, create responsive designs, and more.
We hope this tutorial has provided you with the information you need to get started with determining the viewport dimensions in JavaScript.
