js实现canvas粒子动画倒计时效果代码-html代码-BFW代码库

代码语言：html
所属分类：粒子
代码描述：js实现canvas粒子动画倒计时效果代码
下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>BFW NEW PAGE</title>
    
     <style>
     body {
  font-family: "Avenir", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #79a8ae;
  color: #666;
  font-size: 16px;
  line-height: 1.5em;
}

h1 {
  color: #111;
  margin: 0 0 12px 0;
  font-size: 24px;
  line-height: 1.5em;
}

p {
  margin: 0 0 10x 0;
}

a {
  color: #888;
  text-decoration: none;
  border-bottom: 1px solid #ccc;
}

a:hover {
  border-bottom-color: #888;
}

body,
.overlay {
  -webkit-perspective: 1000;
  -webkit-perspective-origin-y: 25%;
}

.body--ready {
  /* Ideas
  background: -webkit-linear-gradient(top, #e2b986 -10%, #241c35 140%);
  background: -webkit-linear-gradient(top, #c97369 -40%, #241c35 130%);
  background: -webkit-linear-gradient(top, #fac4c4 -10%, #606386 140%);
  background: -webkit-linear-gradient(top, #519ab0 0%, #414A6D 110%);
  background: -webkit-linear-gradient(top, rgb(129, 0, 170) 0%, rgb(43, 4, 114) 110%);
  background: -webkit-linear-gradient(top, rgb(163, 235, 189) 0%, rgb(16, 93, 145) 110%);
  background: -webkit-linear-gradient(top, rgb(165, 103, 189) 0%, rgb(75, 233, 214) 120%);
  */

  background: -webkit-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: -moz-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: -o-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: -ms-linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
  background: linear-gradient(top, rgb(203, 235, 219) 0%, rgb(55, 148, 192) 120%);
}

.body--ready .overlay {
  -webkit-transition: -webkit-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: -moz-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: -ms-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: -o-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1);
}


.ui {
  position: absolute;
  left: 50%;
  bottom: 5%;
  width: 300px;
  margin-left: -150px;
}

.ui-input {
  width: 100%;
  height: 50px;
  background: none;
  font-size: 24px;
  font-weight: bold;
  color: #fff;
  text-align: center;
  border: none;
  border-bottom: 2px solid white;
}

.ui-input:focus {
  outline: none;
  border: none;
  border-bottom: 2px solid white;
}

.ui-return {
  display: none;
  position: absolute;
  top: 20px;
  right: 0;
  padding: 3px 2px 0 2px;
  font-size: 10px;
  line-height: 10px;
  color: #fff;
  border: 1px solid #fff;
}

.ui--enter .ui-return {
  display: block;
}

.ui--wide {
  width: 76%;
  margin-left: 12%;
  left: 0;
}

.ui--wide .ui-return {
  right: -20px;
}

.help {
  position: absolute;
  top: 40px;
  right: 40px;
  width: 25px;
  height: 25px;
  text-align: center;
  font-size: 13px;
  line-height: 27px;
  font-weight: bold;
  cursor: pointer;
  background: #fff;
  color: #79a8ae;
  opacity: .9;

  -webkit-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
}

.help:hover {
  opacity: 1;
}

.overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 550px;
  height: 490px;
  margin: -260px 0 0 -275px;
  opacity: 0;

  -webkit-transform: rotateY(90deg);
  -moz-transform: rotateY(90deg);
  -ms-transform: rotateY(90deg);
  -o-transform: rotateY(90deg);
  transform: rotateY(90deg);
}

.overlay--visible {
  opacity: 1;

  -webkit-transform: rotateY(0);
  -moz-transform: rotateY(0);
  -ms-transform: rotateY(0);
  -o-transform: rotateY(0);
  transform: rotateY(0);
}

.ui-share,
.ui-details {
  opacity: .9;
  background: #fff;
  z-index: 2;
}

.ui-details-content,
.ui-share-content {
  padding: 100px 50px;
}

.commands {
  margin: 0;
  padding: 0;
  list-style: none;
  cursor: pointer;
}

.commands-item {
  font-size: 12px;
  line-height: 22px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 20px;
  background: #fff;
  margin-top: 1px;
  color: #333;
  opacity: .9;

  -webkit-transition: -webkit-transform 0.7s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: -moz-transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: -ms-transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: -o-transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: transform 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1),
                      opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
}

.commands-item--gap {
  margin-top: 9px;
}

.commands-item:hover {
  opacity: 1;
}

.commands-item:hover .commands-item-action {
  background: #333;
}

.commands-item a {
  display: inline-block;
}

.commands-item-mode {
  display: inline-block;
  margin-left: 3px;
  font-style: italic;
  color: #ccc;
}

.commands-item-title {
  display: inline-block;
  width: 150px;
}

.commands-item-info {
  display: inline-block;
  width: 300px;
  font-size: 14px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: normal;
  color: #aaa;
}

.commands-item-action {
  display: inline-block;
  float: right;
  margin-top: 3px;
  text-transform: uppercase;
  font-size: 10px;
  line-height: 10px;
  color: #fff;
  background: #90c9d1;
  padding: 5px 10px 4px 10px;
  border-radius: 3px;
}

.commands-item:first-child {
  margin-top: 0;
}

.twitter-share {
  position: absolute;
  top: 4px;
  right: 20px;
}


.tabs-labels {
  margin-bottom: 9px;
}

.tabs-label {
  display: inline-block;
  background: #fff;
  padding: 10px 20px;
  font-size: 12px;
  line-height: 22px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #333;
  opacity: .5;
  cursor: pointer;
  margin-right: 2px;

  -webkit-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -moz-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -ms-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  -o-transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
  transition: opacity 0.1s cubic-bezier(0.694, 0.0482, 0.335, 1);
}

.tabs-label:hover {
  opacity: .9;
}

.tabs-label--active {
  opacity: .9;
}

.tabs-panel {
  display: none;
}

.tabs-panel--active {
  display: block;
}

.tab-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.touch .ui-input {
  display: none;
}
      </style>
</head>
<body>
   <canvas class="canvas"></canvas>

<div class="help">?</div> 

<div class="ui">
  <input class="ui-input" type="text" />
  <span class="ui-return">↵</span>
</div>

<div class="overlay">
  <div class="tabs">
    <div class="tabs-labels"><span class="tabs-label">Commands</span><span class="tabs-label">Info</span><span class="tabs-label">Share</span></div>

    <div class="tabs-panels">
      <ul class="tabs-panel commands">
        <li class="commands-item"><span class="commands-item-title">Text</span><span class="commands-item-info" data-demo="Hello :)">Type anything</span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Countdown</span><span class="commands-item-info" data-demo="#countdown 10">#countdown<span class="commands-item-mode">number</span></span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Time</span><span class="commands-item-info" data-demo="#time">#time</span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Rectangle</span><span class="commands-item-info" data-demo="#rectangle 30x15">#rectangle<span class="commands-item-mode">width x height</span></span><span class="commands-item-action">Demo</span></li>
        <li class="commands-item"><span class="commands-item-title">Circle</span><span class="commands-item-info" data-demo="#circle 25">#circle<span class="commands-item-mode">diameter</span></span><span class="commands-item-action">Demo</span></li>

        <li class="commands-item commands-item--gap"><span class="commands-item-title">Animate</span><span class="commands-item-info" data-demo="The time is|#time|#countdown 3|#icon thumbs-up"><span class="commands-item-mode">command1</span>&nbsp;|<span class="commands-item-mode">command2</span></span><span class="commands-item-action">Demo</span></li>
      </ul>

      <div class="tabs-panel ui-details">
        <div class="ui-details-content">
          <h1>Shape Shifter</h1>
        
        
        </div>
      </div>

      <div class="tabs-panel ui-share">
        <div class="ui-share-content">
          <h1>Sharing</h1>
         
        </div>
      </div>
    </div>
  </div>
</div>

    <script type="text/javascript">
        
/*

  Shape Shifter
  =============
  A canvas experiment by Kenneth Cachia
  http://www.kennethcachia.com

  Updated code
  ------------
  https://github.com/kennethcachia/Shape-Shifter 

*/


var S = {
  init: function () {
    var action = window.location.href,
        i = action.indexOf('?a=');

    S.Drawing.init('.canvas');
    document.body.classList.add('body--ready');

    if (i !== -1) {
      S.UI.simulate(decodeURI(action).substring(i + 3));
    } else {
      S.UI.simulate('Shape|Shifter|Type|to start|#rectangle|#countdown 3||');
    }

    S.Drawing.loop(function () {
      S.Shape.render();
    });
  }
};


S.Drawing = (function () {
  var canvas,
      context,
      renderFn
      requestFrame = window.requestAnimationFrame       ||
                     window.webkitRequestAnimationFrame ||
                     window.mozRequestAnimationFrame    ||
                     window.oRequestAnimationFrame      ||
                     window.msRequestAnimationFrame     ||
                     function(callback) {
                       window.setTimeout(callback, 1000 / 60);
                     };

  return {
    init: function (el) {
      canvas = document.querySelector(el);
      context = canvas.getContext('2d');
      this.adjustCanvas();

      window.addEventListener('resize', function (e) {
        S.Drawing.adjustCanvas();
      });
    },

    loop: function (fn) {
      renderFn = !renderFn ? fn : renderFn;
      this.clearFrame();
      renderFn();
      requestFrame.call(window, this.loop.bind(this));
    },

    adjustCanvas: function () {
      canvas.width = window.innerWidth;
      canvas.height = window.innerHeight;
    },

    clearFrame: function () {
      context.clearRect(0, 0, canvas.width, canvas.height);
    },

    getArea: function () {
      return { w: canvas.width, h: canvas.height };
    },

    drawCircle: function (p, c) {
      context.fillStyle = c.render();
      context.beginPath();
      context.arc(p.x, p.y, p.z, 0, 2 * Math.PI, true);
      context.closePath();
      context.fill();
    }
  }
}());


S.UI = (function () {
  var input = document.querySelector('.ui-input'),
      ui = document.querySelector('.ui'),
      help = document.querySelector('.help'),
      commands = document.querySelector('.commands'),
      overlay = document.querySelector('.overlay'),
      canvas = document.querySelector('.canvas'),
      interval,
      isTouch = false, //('ontouchstart' in window || navigator.msMaxTouchPoints),
      currentAction,
      resizeTimer,
      time,
      maxShapeSize = 30,
      firstAction = true,
      sequence = [],
      cmd = '#';

  function formatTime(date) {
    var h = date.getHours(),
        m = date.getMinutes(),
    m = m < 10 ? '0' + m : m;
    return h + ':' + m;
  }

  function getValue(value) {
    return value && value.split(' ')[1];
  }

  function getAction(value) {
    value = value && value.split(' ')[0];
    return value && value[0] === cmd && value.substring(1);
  }

  function timedAction(fn, delay, max, reverse) {
    clearInterval(interval);
    currentAction = reverse ? max : 1;
    fn(currentAction);

    if (!max || (!reverse && currentAction < max) || (reverse && currentAction > 0)) {
      interval = setInterval(function () {
        currentAction = reverse ? currentAction .........完整代码请登录后点击上方下载按钮下载查看