Dirask-JavaScript

Posted on Mar 4, 2021 • Edited on Mar 6, 2021 • Originally published at dirask.com

CSS - animation with transition property example

#html #css #javascript #webdev

Hello there! 👋😊

In this article, I would like to show you how to use one of the coolest style property in CSS - transition. 😎⏭

Before we start, I would highly recommend you to check out the runnable example for the solution on our website:
CSS - animation with transition property example

Final effect:

Below example presents three CSS styles:

.normal which is the default style of our div element,
.transformed which is transformed style of our div element,
.button which is style of our button element.

The styles of our div have transition value set to '1s'. It means our component will change it's property values smoothly, over a given duration (over 1s). Additional transform parameter describes moving of an element. In our case transform rotates the element during 2s.

Runnable example:

<!doctype html>
<html>
  <head>
    <style>
      .normal {
        margin: 50px;
        padding: 20px;
        border-radius: 10px;
        width: 100px;
        height: 100px;
        background: #06F2FF;
        box-shadow: 5px 5px 5px #04bd57;
        transition: 1s,  transform 2s
      }

      .transformed {
        margin: 50px;
        padding: 20px;
        border-radius: 10px;
        width: 150px;
        height: 150px;
        background: #06FF76;
        box-shadow: 5px 5px 5px #3085d6;
        transition: 1s, transform 2s;
        transform: rotate(180deg)
      }

      .button {
        padding: 2px;
        border: 2px solid white;
        background: black;
        box-shadow: 5px 5px 5px grey;
        text-shadow: 1px 1px 1px black;
        font-weight: 900;
        color: white;
        border-radius: 10px;
      }
    </style>
    <script>
      function myFunction() {
        var element = document.getElementById("my-div");
        if(element.classList[0] == "normal"){
          element.classList.remove("normal");
          element.classList.add("transformed");
        }
        else if(element.classList[0] == "transformed"){
          element.classList.remove("transformed");
          element.classList.add("normal");
        }
      }
    </script>
  </head>
  <body>
    <div style="height: 300px">
      <div id="my-div" class="normal">
        <button class="button" onclick="myFunction()">Click me</button>
      </div>
    </div>
  </body>
</html>

You can run this example here

📝 Note:
If the duration is not specified, the transition will have no effect, because the default value is 0.

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Top comments (1)

Temani Afif • Mar 4 '21 • Edited

Instead of testing the existing a class you can simplify your code and use toggle

 function myFunction() {
        var element = document.getElementById("my-div");
          element.classList.toggle("normal");
          element.classList.toggle("transformed");
      }
}