Flash Code#1 Drag&Drop Component Using Vue.js

In this short article I will show you how to create a drag and drop component using Vue.js and Tailwindcss.

Preview

link: Flash Code

Let's start with the UI:

We will put a single div with a few tailwind classes:

• bg-gray-200, rounded-lg, border-2, border-dashed, and border-gray-500: These are Tailwindcss classes. They are pretty self explanatory but if you want more infos you can checkout Tailwind's docs.
• dropzone: Sets the width to 400px and the height to 500px.

And that's what we get:

Now let's add some text inside. We can do that by simply adding another div inside the first one.

This is what it looks like:

It's time to make it do something (the logic):

1-Change the border color when dragging a file:
First, let's make the dropzone interactive by changing the border color when a file is dragged in. We will use the dragenter and dragleave events to detect if a file is hovering the drop area. We will use a variable named fileOverDropArea to control the border color.

Thanks to Vue we can bind the class attribute to add some classes only if certain conditions are met. In this case we are setting the border color to a dark gray if fileOverDropArea is false and to red if it is true.

2- Handling the file upload:
Now that we got the hover animation to work, let's handle the file uploading part.
This is the easiest part actually, all we have to do is to listen for another event called drop and then call a method when the event is fired.
To do that we will add this line of code to the dropzone div:

@drop.prevent="dropFile"
~~~
This is the code of the **dropFile** method:

  


  
  
  Complete Component Code:



  


  
  
  A quick word about this series:


Flash Code is a series of posts showing you how to build various components using Vuejs. This was the first post, and many will come out in the following weeks.

I would love to hear your thoughts on this first post (this is actually my first blog post ever).

Thanks for reading.