Preview image before uploading Using JavaScript.


In this article, you'll learn how to preview images before uploading with this easy-to-follow JavaScript tutorial. Learn how to create a simple image previewer with just a few lines of code.

So we going to preview the image that is selected by user using choose file button (input type= ‘file’). You can say we going to preview the image that is selected by user using HTML CSS and JavaScript.

preview image using javascript

You may have seen in many websites that, when you select the image, it shows the preview of that image So that user confirms the selected image.

Video Tutorial For Preview Image Using JavaScript:

Preview Selected Image Using JavaScript.

So how we going to preview the image? It’s easy to show image which is selected by user.

First, we going to declare function that run on change event (Onchange) in input type file, that first check, is file length is greater than 0 or not. If it is greater, then we set the img tag src attribute with file which is selected by user.

Image tag is created using JavaScript. If image is selected only then img tag is visible otherwise it won't. We'll also design the input choose file button with label tag.

Below is final code for preview image using JavaScript.

You may like:

  1. How to design input type file button using HTML, and CSS.
  2. How to add image inside input field.

So that’s how you can preview or show the selected image using html CSS and JavaScript. if you have any question or suggestion you can write in comment section.

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