点击出现小心心

使用鼠标的点击事件，使用鼠标点击任意地方的时候，点击的地方会出现一个小心，每一次出现的小心的颜色都不一样。

原理分析
1.设置点击的范围
2.鼠标点击事件
3.记录鼠标点击的位置在此位置出现一颗小心
4.小心向上浮动并且自动消失
5.小心颜色的变幻

效果演示
在这里插入图片描述
代码演示
html代码

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>页面点击小红心</title>
</head><body>
<script src="love.js"></script>
</body>
</html>

js代码

! function(e, t, a) {function n() {c(".heart{width: 10px;height: 10px;position: fixed;background: #f00;transform: rotate(45deg);-webkit-transform: rotate(45deg);-moz-transform: rotate(45deg);}.heart:after,.heart:before{content: '';width: inherit;height: inherit;background: inherit;border-radius: 50%;-webkit-border-radius: 50%;-moz-border-radius: 50%;position: fixed;}.heart:after{top: -5px;}.heart:before{left: -5px;}"), o(), r()}function r() {for (var e = 0; e < d.length; e++) d[e].alpha <= 0 ? (t.body.removeChild(d[e].el), d.splice(e, 1)) : (d[e].y--, d[e].scale += .004, d[e].alpha -= .013, d[e].el.style.cssText = "left:" + d[e].x + "px;top:" + d[e].y + "px;opacity:" +d[e].alpha + ";transform:scale(" + d[e].scale + "," + d[e].scale + ") rotate(45deg);background:" + d[e].color +";z-index:99999");requestAnimationFrame(r)}function o() {var t = "function" == typeof e.onclick && e.onclick;e.onclick = function(e) {t && t(), i(e)}}function i(e) {var a = t.createElement("div");a.className = "heart", d.push({el: a,x: e.clientX - 5,y: e.clientY - 5,scale: 1,alpha: 1,color: s()}), t.body.appendChild(a)}function c(e) {var a = t.createElement("style");a.type = "text/css";try {a.appendChild(t.createTextNode(e))} catch (t) {a.styleSheet.cssText = e}t.getElementsByTagName("head")[0].appendChild(a)}function s() {return "rgb(" + ~~(255 * Math.random()) + "," + ~~(255 * Math.random()) + "," + ~~(255 * Math.random()) + ")"}var d = [];e.requestAnimationFrame = function() {return e.requestAnimationFrame || e.webkitRequestAnimationFrame || e.mozRequestAnimationFrame || e.oRequestAnimationFrame ||e.msRequestAnimationFrame || function(e) {setTimeout(e, 1e3 / 60)}}(), n()}(window, document);