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跟随鼠标的动态光环,围绕鼠标形成星星形状

来源：程序员人生发布时间：2014-02-14 03:24:38 阅读次数：5714次

　　跟随鼠标的动态光环，当鼠标停止后逐渐围绕鼠标形成一个大的“星星”，许多跟随鼠标移动的小星星组成一定的图案，十分漂亮，主要是运用JS技术实现的鼠标特效，DIV+CSS布局，符合WEB标准。

　　演示：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>跟随鼠标移动的流星</title><meta http-equiv="content-type" content="text/html;charset=gb2312"><style type="text/css">html{overflow:hidden;}body{position:absolute;height:100%;width:100%;margin:0;padding:0;}#screen{background:#000;position:absolute;width:100%;height:100%;}#screen span{background:#fff;font-size:0;overflow:hidden;width:2px;height:2px;}</style><script type="text/javascript">var Follow = function () {var $ = function (i) {return document.getElementById(i)},addEvent = function (o, e, f) {o.addEventListener ? o.addEventListener(e, f, false) : o.attachEvent('on'+e, function(){f.call(o)})},OBJ = [], sp, rs, N = 0, m;var init = function (id, config) {this.config = config || {};this.obj = $(id);sp = this.config.speed || 4;rs = this.config.animR || 1;m = {x: $(id).offsetWidth * .5, y: $(id).offsetHeight * .5};this.setXY();this.start();}init.prototype = {setXY : function () {var _this = this;addEvent(this.obj, 'mousemove', function (e) {e = e || window.event;m.x = e.clientX;m.y = e.clientY;})},start : function () {var k = 180 / Math.PI, OO, o, _this = this, fn = this.config.fn;OBJ[N++] = OO = new CObj(null, 0, 0);for(var i=0;i<360;i+=20){var O = OO;for(var j=10; j<35; j+=1){var x = fn(i, j).x,y = fn(i, j).y;OBJ[N++] = o = new CObj(O , x, y);O = o;}}setInterval(function() {for (var i = 0; i < N; i++) OBJ[i].run();}, 16);}}var CObj = function (p, cx, cy) {var obj = document.createElement("span");this.css = obj.style;this.css.position = "absolute";this.css.left = "-1000px";this.css.zIndex = 1000 - N;document.getElementById("screen").appendChild(obj);this.ddx = 0;this.ddy = 0;this.PX = 0;this.PY = 0;this.x = 0;this.y = 0;this.x0 = 0;this.y0 = 0;this.cx = cx;this.cy = cy;this.parent = p;}CObj.prototype.run = function () {if (!this.parent) {this.x0 = m.x;this.y0 = m.y;} else {this.x0 = this.parent.x;this.y0 = this.parent.y;}this.x = this.PX += (this.ddx += ((this.x0 - this.PX - this.ddx) + this.cx) / rs) / sp;this.y = this.PY += (this.ddy += ((this.y0 - this.PY - this.ddy) + this.cy) / rs) / sp;this.css.left = Math.round(this.x) + 'px';this.css.top = Math.round(this.y) + 'px';}return init;}();</script></head><body><div id="screen"></div><script type="text/javascript">new Follow('screen', {speed: 4,animR : 2,fn : function (i, j) {return {x : j/4*Math.cos(i),y : j/4*Math.sin(i)}}})</script></body></html><div style="text-align:center;margin:30px 0 0 0;"><hr style="color:#999;height:1px;">如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.wfuyu.com/' target='_blank'>http://www.wfuyu.com/</a></div>
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