While in a React context we used a library to do the heavy lifting for us, knowing the HTML API is the only prerequisites for this approach. Otherwise, you can continue following this tutorial and build the demo application step by step. You can clone the GitHub repository that supports this article by launching the following command: git clone Follow this step-by-step tutorial to achieve the following result on CodeSandbox: Resizing Images Using Let’s see how to resize an image with Vanilla JavaScript. As you can imagine, both of these consequences fall on end-users – we want to avoid this. As we have previously explained you might also want to compress such images. Uploading large photos is time-consuming and may cost money in bandwidth. That is because the quality of the images and their file sizes have been increasing for years.įor example, when letting users upload an image, you should always consider resizing it before uploading it. Resizing an image has become increasingly important.

Thanks to the HTML element, this is a reasonably easy task to accomplish. window.In this article, you will learn how to resize an image in JavaScript, without using any external library. Users can follow the syntax below to wait resize event completes and then perform an action using JavaScript. Also, we require to use the clearTimeOut() method. In such cases, we must use the setTimeOut() method with the resize event to execute JavaScript code or function once the event completes. Sometimes, we require to execute some JavaScript code only once when resize event completes. The ‘resize’ event triggers multiple times while resizing the window.

Whenever we resize the web page window, it triggers the ‘resize’ event by default.

Js on resize