跟从鼠标的动态光环,环绕鼠标形成星星外形

发布时间：2018-08-14 03:13:53 所属栏目：活动来源：站长网

导读：跟从鼠标的动态光环，当鼠标遏制后逐渐环绕鼠标形成一个大的星星，很多跟从鼠标移动的小星星构成必然的图案，异常大度，首要是运用JS技能实现的鼠标殊效，DIV+CSS机关，切合WEB尺度。演示： !DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN

　　跟从鼠标的动态光环，当鼠标遏制后逐渐环绕鼠标形成一个大的“星星”，很多跟从鼠标移动的小星星构成必然的图案，异常大度，首要是运用JS技能实现的鼠标殊效，DIV+CSS机关，切合WEB尺度。

　　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>跟从鼠标移动的流星</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;">如不能表现结果，请按Ctrl+F5革新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></div>
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