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Animate Plus

Animate Plus is a CSS and SVG animation library for modern browsers. Animate Plus is performant and lightweight (3KB gzipped), making it particularly well-suited for mobile.

Getting Started

npm install animateplus or download and insert animate.min.js:

<script src=animate.min.js></script>

Start animating things:

animate({
  el: "div",
  translateX: 100,
  opacity: .5,
  duration: 500
});

API

Arguments

animate accepts either an Object or a Map containing at least an element and a property to animate:

animate({
  el: "div",
  opacity: 0
});

// Or:
var params = new Map();
params.set("el", "div");
params.set("opacity", 0);
animate(params);

el

The elements to animate. el can either take a:

  • CSS selector: "div"
  • jQuery-like object: $("div")
  • DOM element: document.querySelector("div")
  • Array of DOM elements: [document.querySelector("div")]
  • NodeList or HTMLCollection: document.getElementsByTagName("div")

duration

The duration of your animation in milliseconds. Default: 1000.

delay

The delay before your animation starts in milliseconds. Default: 0.

easing

The easing type. Default: easeOutElastic. You can preview the possible values listed below with the easing visualizer tool.

linear ease in ease out ease in out
linear easeInQuad easeOutQuad easeInOutQuad
easeInCubic easeOutCubic easeInOutCubic
easeInQuart easeOutQuart easeInOutQuart
easeInQuint easeOutQuint easeInOutQuint
easeInSine easeOutSine easeInOutSine
easeInExpo easeOutExpo easeInOutExpo
easeInCirc easeOutCirc easeInOutCirc
easeInElastic easeOutElastic easeInOutElastic
easeInBack easeOutBack easeInOutBack
easeOutBounce

The frequency of elastic curves can be configured by passing a number between 0 and 1000 (default: 500).

animate({
  el: "div",
  translateY: "200%",
  easing: "easeOutElastic 700"
});

loop

Boolean. Specifies if your animation should run indefinitely. Default: false.

direction

The direction of your animation. Default: normal. Possible values:

  • normal
  • reverse
  • alternate (only applies if your animation loops)

begin

A function to trigger before your animation starts. An array of the elements selected with the el parameter is passed as the callback's first argument.

<!doctype html>
<title>Example</title>

<style>
  div {
    display: none;
    width: 100px;
    height: 100px;
    background: black;
   }
</style>

<div></div>
<div></div>

<script src=animate.min.js></script>
<script>
  animate({
    el: "div",
    scaleX: 2,
    begin: show
  });

  function show(elements) {
    elements.forEach(function(el) { el.style.display = "block"; });
  }
</script>

complete

Same as begin, but triggers the callback at the end of the animation instead.

CSS animations

Supported properties:

  • translateX - translateY - translateZ
  • scale - scaleX - scaleY - scaleZ
  • rotate - rotateX - rotateY - rotateZ
  • skewX - skewY
  • opacity
  • perspective

Animations start from default CSS values and end to the values you specify:

animate({
  el: "div",
  opacity: 0,    // fades out from 1 to 0
  translateX: 20 // slides to the right by 20px
});

Alternatively, you can specify custom start values by passing an array:

animate({
  el: "div",
  opacity: [0, 1],    // fades in from 0 to 1
  translateX: [20, 0] // slides to the left from 20px to 0
});

animate automatically adds units if they're missing (deg for rotate, px for translate and perspective) but you can specify them if needed:

animate({
  el: "div",
  translateX: "100%"
});

SVG animations

SVG animations require an array with your start and end values. Any SVG attribute containing at least some numeric values can be animated:

var colors = ["#80f", "#fc0"];

var points = [
  "M54,271 L0,271 L0,103 L0,0 L142,0 L285,0 L285,103 L285,271 L230,271 L142,271 Z",
  "M54,271 L71,172 L0,103 L98,89 L142,0 L186,89 L285,103 L213,172 L230,271 L142,224 Z"
];

animate({
  el: "path",
  fill: colors,
  d: points
});

View this example's result →

Stopping animations

animate.stop(el) stops all animations running on el (which can be any of these values).

var div = document.querySelector("div");

animate({
  el: div,
  rotate: 180
});

// Stop the rotation on click
div.addEventListener("click", function() {
  animate.stop(div);
});

Quick examples

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CSS and SVG animation library

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