---
title: DOM Animations
description: "> Learn to create HTML animations using JavaScript. --- ## A Basic Web Page To demonstrate how to create HTML animations with JavaScript, we will use a simple web page: ### Example ` My First JavaScript Animation My animation will…"
url: "https://apprentice.mn/docs/dom-animations/"
updated: "2021-05-19"
category: Javascript
---

# DOM Animations

> Learn to create HTML animations using JavaScript.

---

## A Basic Web Page

To demonstrate how to create HTML animations with JavaScript, we will use a simple web page:

### Example

      `<!DOCTYPE html>
<html>
<body>

<h1>My First JavaScript Animation</h1>

<div id="animation">My animation will go here</div>

</body>
</html>`

## Create an Animation Container

All animations should be relative to a container element.

### Example

      `<div id ="container">
  <div id ="animate">My animation will go here</div>
</div>`

## Style the Elements

The container element should be created with style = “`position: relative`“.

The animation element should be created with style = “`position: absolute`“.

### Example

      `#container {
  width: 400px;
  height: 400px;
  position: relative;
  background: yellow;
}
#animate {
  width: 50px;
  height: 50px;
  position: absolute;
  background: red;
}`

## Animation Code

JavaScript animations are done by programming gradual changes in an element’s style.

The changes are called by a timer. When the timer interval is small, the animation looks continuous.

The basic code is:

### Example

      `var id = setInterval(frame, 5);

function frame() {
  if (/* test for finished */) {
    clearInterval(id);
  } else {
    /* code to change the element style */
  }
}`

## Create the Full Animation Using JavaScript

### Example

      `var id = null;
function myMove() {
  var elem = document.getElementById("animate");
  var pos = 0;
  clearInterval(id);
  id = setInterval(frame, 5);
  function frame() {
    if (pos == 350) {
      clearInterval(id);
    } else {
      pos++;
      elem.style.top = pos + 'px';
      elem.style.left = pos + 'px';
    }
  }
}`        [https://www.addtoany.com/add_to/facebook?linkurl=https%3A%2F%2Fapprentice.mn%2Fdocs%2Fdom-animations%2F&linkname=DOM%20Animations](https://www.addtoany.com/add_to/facebook?linkurl=https%3A%2F%2Fapprentice.mn%2Fdocs%2Fdom-animations%2F&linkname=DOM%20Animations)[https://www.addtoany.com/add_to/mastodon?linkurl=https%3A%2F%2Fapprentice.mn%2Fdocs%2Fdom-animations%2F&linkname=DOM%20Animations](https://www.addtoany.com/add_to/mastodon?linkurl=https%3A%2F%2Fapprentice.mn%2Fdocs%2Fdom-animations%2F&linkname=DOM%20Animations)[https://www.addtoany.com/add_to/email?linkurl=https%3A%2F%2Fapprentice.mn%2Fdocs%2Fdom-animations%2F&linkname=DOM%20Animations](https://www.addtoany.com/add_to/email?linkurl=https%3A%2F%2Fapprentice.mn%2Fdocs%2Fdom-animations%2F&linkname=DOM%20Animations)[https://www.addtoany.com/share](https://www.addtoany.com/share)