点击屏幕增加小心心的js

<script>
		!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);
	</script>

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