js实现直播点击飘心效果

本文实例为大家分享了js实现直播点击飘心效果的具体代码，供大家参考，具体内容如下

<!DOCTYPE html>
<html>
 <head>
 <meta charset="UTF-8">
 <title>直播点击飘心效果</title>
 <style type="text/css">
html, body {
 height: 100%;
 position: relative;
 width: 100%;
}
canvas {
 display: block;
 position: absolute;
 bottom: 100px;
 right: -24px;
 z-index: 20;
 cursor: pointer;
 -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
.journal-reward {
 position: absolute;
 bottom: 70px;
 right: 20px;
 height: 60px;
 width: 60px;
 display: block;
 z-index: 21;
 cursor: pointer;
}

</style>
</head>
<body>
 <img src="img/reward.png" class="journal-reward" />
<script src="jquery.min.js"></script>
<script src="flutter-hearts-zmt.js" type="text/javascript" charset="utf-8"></script>
</body>
</html>

flutter-hearts-zmt.js

! function(t, e) {
 "object" == typeof exports && "undefined" != typeof module ? module.exports = e() : "function" == typeof define && define.amd ? define(e) : t.BubbleHearts = e()
}(this, function() {
 "use strict";

 function t(t, n, r) {
 var i = e.uniformDiscrete(89, 91) / 100,
 o = 1 - i,
 u = (e.uniformDiscrete(45, 60) + e.uniformDiscrete(45, 60)) / 100,
 a = function(t) {
 return t > i ? Math.max(((1 - t) / o).toFixed(2), .1) * u : u
 },
 c = e.uniformDiscrete(-30, 30),
 f = function(t) {
 return c
 },
 h = 10,
 s = n.width / 2 + e.uniformDiscrete(-h, h),
 d = (n.width - Math.sqrt(Math.pow(t.width, 2) + Math.pow(t.height, 2))) / 2 - h,
 l = e.uniformDiscrete(.8 * d, d) * (e.uniformDiscrete(0, 1) ? 1 : -1),
 m = e.uniformDiscrete(250, 400),
 w = function(t) {
 return t > i ? s : s + l * Math.sin(m * (i - t) * Math.PI / 180)
 },
 v = function(e) {
 return t.height / 2 + (n.height - t.height / 2) * e
 },
 p = e.uniformDiscrete(14, 18) / 100,
 g = function(t) {
 return t > p ? 1 : 1 - ((p - t) / p).toFixed(2)
 };
 return function(e) {
 if(!(e >= 0)) return !0;
 r.save();
 var n = a(e),
 i = f(e),
 o = w(e),
 u = v(e);
 r.translate(o, u), r.scale(n, n), r.rotate(i * Math.PI / 180), r.globalAlpha = g(e), r.drawImage(t, -t.width / 2, -t.height / 2, t.width, t.height), r.restore()
 }
 }
 var e = function(t) {
 var e = t,
 n = Math.floor,
 r = Math.random;
 return t.uniform = function(t, e) {
 return t + (e - t) * r()
 }, t.uniformDiscrete = function(t, r) {
 return t + n((r - t + 1) * e.uniform(0, 1))
 }, t
 }({}),
 n = function(t, e) {
 if(!(t instanceof e)) throw new TypeError("Cannot call a class as a function")
 },
 r = function() {
 function t(t, e) {
 for(var n = 0; n < e.length; n++) {
  var r = e[n];
  r.enumerable = r.enumerable || !1, r.configurable = !0, "value" in r && (r.writable = !0), Object.defineProperty(t, r.key, r)
 }
 }
 return function(e, n, r) {
 return n && t(e.prototype, n), r && t(e, r), e
 }
 }(),
 i = window.requestAnimationFrame || window.webkitRequestAnimationFrame || function(t) {
 return setTimeout(t, 16)
 },
 o = function() {
 function o() {
 n(this, o);
 var t = this.canvas = document.createElement("canvas"),
  e = this.context = t.getContext("2d"),
  r = this._children = [],
  u = function n() {
  i(n), e.clearRect(0, 0, t.width, t.height);
  for(var o = 0, u = r.length; o < u;) {
  var a = r[o];
  a.render.call(null, (a.timestamp + a.duration - new Date) / a.duration) ? (r.splice(o, 1), u--) : o++
  }
  };
 i(u)
 }
 return r(o, [{
 key: "bubble",
 value: function(n) {
  var r = arguments.length > 1 && void 0 !== arguments[1] ? arguments[1] : e.uniformDiscrete(2400, 3600),
  i = arguments.length > 2 && void 0 !== arguments[2] ? arguments[2] : t(n, this.canvas, this.context);
  return this._children.push({
  render: i,
  duration: r,
  timestamp: +new Date
  }), this
 }
 }]), o
 }();
 return o
});
// 图片地址在此处更换 可换成你的图片
var assets = [
 'img/1.png',
 'img/2.png',
 'img/3.png',
 'img/4.png',
 'img/5.png',
];
assets.forEach(function(src, index) {
 assets[index] = new Promise(function(resolve) {
 var img = new Image;
 img.onload = resolve.bind(null, img);
 img.src = src;
 });
});

Promise.all(assets).then(function(images) {

 var random = {
 uniform: function(min, max) {
 return min + (max - min) * Math.random();
 },
 uniformDiscrete: function(i, j) {
 return i + Math.floor((j - i + 1) * random.uniform(0, 1));
 },
 };

 var stage = new BubbleHearts();
 var canvas = stage.canvas;
 canvas.width = 170;
 canvas.height = 300;
 canvas.style['width'] = '170px';
 canvas.style['height'] = '300px';
 document.body.appendChild(canvas);
 //journal-reward 为赏桃的按钮
 document.getElementsByClassName('journal-reward')[0].addEventListener('click', function() {
 //随机飘动
 stage.bubble(images[random.uniformDiscrete(0, images.length - 1)]);

 }, false);

});

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。