JS-鼠标点击出现爱心

新建js文件，将代码复制到js文件中，然后在HTML文件中引入js，这样鼠标点击后就可以出现爱心

// js.js

!function(e, t, a) {
function r() {
    for (var e = 0; e < s.length; e++) s[e].alpha <= 0 ? (t.body.removeChild(s[e].el), s.splice(e, 1)) : (s[e].y--, s[e].scale += .004, s[e].alpha -= .013, s[e].el.style.cssText = "left:" + s[e].x + "px;top:" + s[e].y + "px;opacity:" + s[e].alpha + ";transform:scale(" + s[e].scale + "," + s[e].scale + ") rotate(45deg);background:" + s[e].color + ";z-index:99999");
    requestAnimationFrame(r)
}
function n() {
    var t = "function" == typeof e.onclick && e.onclick;
    e.onclick = function(e) {
        t && t(),
        o(e)
    }
}
function o(e) {
    var a = t.createElement("div");
    a.className = "heart",
    s.push({
        el: a,
        x: e.clientX - 5,
        y: e.clientY - 5,
        scale: 1,
        alpha: 1,
        color: c()
    }),
    t.body.appendChild(a)
}
function i(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 c() {
    return "rgb(" + ~~ (255 * Math.random()) + "," + ~~ (255 * Math.random()) + "," + ~~ (255 * Math.random()) + ")"
}
var s = [];
e.requestAnimationFrame = e.requestAnimationFrame || e.webkitRequestAnimationFrame || e.mozRequestAnimationFrame || e.oRequestAnimationFrame || e.msRequestAnimationFrame ||
function(e) {
    setTimeout(e, 1e3 / 60)
},
i(".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;}"),
n(),
r() } (window, document);