today the future初音:我在网上下载的网页特效代码为什么不好用?

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/04 07:32:05
我在网上下载了一些网页特效的代码,放在dreamweaver里,在预览的时候看不到预期的效果,不知道为什么?那个特效应该属于flash

;
  var s, x, y, sn, cs;
  var a, r, cx, cy;
  var i, doc_width = 800, doc_height = 600;
  if (ns4up) {
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  }
  else
  if (ie4up) {
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
  x = new Array();
  y = new Array();
  r = new Array();
  cx = new Array();
  cy = new Array();
  s = 8;
  for (i = 0; i < no; ++ i) {
  initRain();
  if (ns4up) {
  if (i == 0) {

  document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
  document.write("top=\"1\" visibility=\"show\"><font color=\"#99CCFF\">");
  document.write("○</font></layer>");
  }
  else {
  document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
  document.write("top=\"1\" visibility=\"show\"><font color=\"#99CCFF\">");
  document.write("○</font></layer>");
  }
  }
  else
  if (ie4up) {
  if (i == 0) {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
  document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
  document.write("visible; TOP: 15px; LEFT: 15px;\"><font color=\"#99CCFF\">");
  document.write("○</font></div>");
  }
  else {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
  document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
  document.write("visible; TOP: 12px; LEFT: 12px;\"><font color=\"#99CCFF\">");
  document.write("○</font></div>");
  }
  }
  }
  function initRain() {
  a = 6;
  r[i] = 1;
  sn = Math.sin(a);
  cs = Math.cos(a);
  cx[i] = Math.random() * doc_width + 1;
  cy[i] = Math.random() * doc_height + 1;
  x[i] = r[i] * sn + cx[i];
  y[i] = cy[i];
  }
  function makeRain() {
  r[i] = 1;
  cx[i] = Math.random() * doc_width + 1;
  cy[i] = 1;
  x[i] = r[i] * sn + cx[i];
  y[i] = r[i] * cs + cy[i];
  }
  function updateRain() {
  r[i] += s;
  x[i] = r[i] * sn + cx[i];
  y[i] = r[i] * cs + cy[i];
  }
  function raindropNS() {
  for (i = 0; i < no; ++ i) {
  updateRain();
  if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) {
  makeRain();
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  }
  document.layers["dot"+i].top = y[i];
  document.layers["dot"+i].left = x[i];
  }
  setTimeout("raindropNS()", speed);
  }
  function raindropIE() {
  for (i = 0; i < no; ++ i) {
  updateRain();
  if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) {
  makeRain();
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
  document.all["dot"+i].style.pixelTop = y[i];
  document.all["dot"+i].style.pixelLeft = x[i];
  }
  setTimeout("raindropIE()", speed);
  }
  if (ns4up) {
  raindropNS();
  }
  else
  if (ie4up) {
  raindropIE();
  }

  -->
  </script>

  提问时间: 2006-07-30 16:28:59

  回答:菜鹰
  学者
  7月31日 09:56 把以下代码复制(即拷贝下来,再粘贴)到记事本,然后保存为文件: pp.htm

  <html>
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
  <title>泡</title>
  </head>
  <body>
  <!--请复制下列代码到<BODY>与</BODY>之间-->
  <script language="JavaScript">
  <!--
  var no = 30;//泡泡的数量
  var speed = 1;
  var ns4up = (document.layers) ? 1 : 0;
  var ie4up = (document.all) ? 1 : 0;
  var s, x, y, sn, cs;
  var a, r, cx, cy;
  var i, doc_width = 800, doc_height = 600;
  if (ns4up) {
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  }
  else
  if (ie4up) {
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
  x = new Array();
  y = new Array();
  r = new Array();
  cx = new Array();
  cy = new Array();
  s = 8;
  for (i = 0; i < no; ++ i) {
  initRain();
  if (ns4up) {
  if (i == 0) {

  document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
  document.write("top=\"1\" visibility=\"show\"><font color=\"#99CCFF\">");
  document.write("○</font></layer>");
  }
  else {
  document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
  document.write("top=\"1\" visibility=\"show\"><font color=\"#99CCFF\">");
  document.write("○</font></layer>");
  }
  }
  else
  if (ie4up) {
  if (i == 0) {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
  document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
  document.write("visible; TOP: 15px; LEFT: 15px;\"><font color=\"#99CCFF\">");
  document.write("○</font></div>");
  }
  else {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
  document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
  document.write("visible; TOP: 12px; LEFT: 12px;\"><font color=\"#99CCFF\">");
  document.write("○</font></div>");
  }
  }
  }
  function initRain() {
  a = 6;
  r[i] = 1;
  sn = Math.sin(a);
  cs = Math.cos(a);
  cx[i] = Math.random() * doc_width + 1;
  cy[i] = Math.random() * doc_height + 1;
  x[i] = r[i] * sn + cx[i];
  y[i] = cy[i];
  }
  function makeRain() {
  r[i] = 1;
  cx[i] = Math.random() * doc_width + 1;
  cy[i] = 1;
  x[i] = r[i] * sn + cx[i];
  y[i] = r[i] * cs + cy[i];
  }
  function updateRain() {
  r[i] += s;
  x[i] = r[i] * sn + cx[i];
  y[i] = r[i] * cs + cy[i];
  }
  function raindropNS() {
  for (i = 0; i < no; ++ i) {
  updateRain();
  if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) {
  makeRain();
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  }
  document.layers["dot"+i].top = y[i];
  document.layers["dot"+i].left = x[i];
  }
  setTimeout("raindropNS()", speed);
  }
  function raindropIE() {
  for (i = 0; i < no; ++ i) {
  updateRain();
  if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) {
  makeRain();
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
  document.all["dot"+i].style.pixelTop = y[i];
  document.all["dot"+i].style.pixelLeft = x[i];
  }
  setTimeout("raindropIE()", speed);
  }
  if (ns4up) {
  raindropNS();
  }
  else
  if (ie4up) {
  raindropIE();
  }

  //-->
  </script>

  </body>

  </html>

  请双击 pp.htm,看见效果了吗,pp.htm就是网页文件,第六行就是<body>,倒数第二行就是</body>,“冒泡代码”现在就是在<BODY>与</BODY>之间。

  <BODY>与</BODY>是网页文件的基本元素,放在<BODY>与</BODY>之间的代码将完成网页窗口的内容显示,“冒泡代码”完成网页窗口“泡泡飘落”的显示,当然可以显示的东西很多(只要是你需要的),再做一个小实验:用记事本打开 pp.htm,把:<!--请复制下列代码到<BODY>与</BODY>之间--> 改为:请复制下列代码到<BODY>与</BODY>之间,请双击 pp.htm,看见效果了吗--在页面上显示““泡泡飘落””以外,在窗口左上角还有“请复制下列代码到<BODY>与</BODY>之间”的字样^_^