使用JS编写面向对象版的放烟花效果代码-JS特效-爱易网页

使用JS编写面向对象版的放烟花效果代码

日期：2014-05-18　浏览次数：20331 次

以下是程序代码

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>爱易网特效演示_放烟花效果（面向对象版）</title>
<style type="text/css">
html,body{overflow:hidden;}
body,div,p{margin:0;padding:0;}
body{background:#000;font:12px/1.5 arial;color:#7A7A7A;}
a{text-decoration:none;outline:none;}
#tips,#copyright{position:absolute;width:100%;height:50px;text-align:center;background:#171717;border:2px solid #484848;}
#tips{top:0;border-width:0 0 2px;}
#tips a{font:14px/30px arial;color:#FFF;background:#F06;display:inline-block;margin:10px 5px 0;padding:0 15px;border-radius:15px;}
#tips a.active{background:#FE0000;}
#copyright{bottom:0;line-height:50px;border-width:2px 0 0;}
#copyright a{color:#FFF;background:#7A7A7A;padding:2px 5px;border-radius:10px;}
#copyright a:hover{background:#F90;}
p{position:absolute;top:55px;width:100%;text-align:center;}
</style>
<script type="text/javascript">
var fgm = {
 on: function(element, type, handler) {
  return element.addEventListener ? element.addEventListener(type, handler, false) : element.attachEvent("on" + type, handler)
 },
 un: function(element, type, handler) {
  return element.removeEventListener ? element.removeEventListener(type, handler, false) : element.detachEvent("on" + type, handler)
 },
 bind: function(object, handler) {
  return function() {
   return handler.apply(object, arguments) 
  } 
 },
 randomRange: function(lower, upper) {
  return Math.floor(Math.random() * (upper - lower + 1) + lower) 
 },
 getRanColor: function() {
  var str = this.randomRange(0, 0xFFFFFF).toString(16);
  while(str.length < 6) str = "0" + str;
  return "#" + str 
 }
};
//初始化对象
function FireWorks() {
 this.type = 0;
 this.timer = null;
 this.fnManual = fgm.bind(this, this.manual)
}
FireWorks.prototype = {
 initialize: function() {
  clearTimeout(this.timer);
  fgm.un(document, "click", this.fnManual);
  switch(this.type) {
   case 1:
    fgm.on(document, "click", this.fnManual);
    break;
   case 2:
    this.auto();
    break;
  };
 },
 manual: function(event) {
  event = event || window.event;
  this.__create__({
   x: event.clientX,
   y: event.clientY  
  });
 },
 auto: function ()
 {
  var that = this;
  that.timer = setTimeout(function() {   
   that.__create__({
    x: fgm.randomRange(50, document.documentElement.clientWidth - 50),
    y: fgm.randomRange(50, document.documentElement.clientHeight - 150)
   }) 
   that.auto();
  }, fgm.randomRange(900, 1100))
 },
 __create__: function (param)
 {
  var that = this;
  var oEntity = null;
  var oChip = null;
  var aChip = [];
  var timer = null;
  var oFrag = document.createDocumentFragment();
  
  oEntity = document.createElement("div");
  with(oEntity.style) {
   position = "absolute";
   top = document.documentElement.clientHeight + "px";
   left = param.x + "px";
   width = "4px";
   height = "30px";
   borderRadius = "4px";
   background = fgm.getRanColor();
  };
  document.body.appendChild(oEntity);
  oEntity.timer = setInterval(function() {
   oEntity.style.top = oEntity.offsetTop - 20 + "px";
   if(oEntity.offsetTop <= param.y) {
    clearInterval(oEntity.timer);
    document.body.removeChild(oEntity);
    (function() {
     //在50-100之间随机生成碎片
     //由于IE浏览器处理效率低, 随机范围缩小至20-30
     //自动放烟花时, 随机范围缩小至20-30
     var len = (/msie/i.test(navigator.userAgent) || that.type == 2) ? fg</div></div>

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