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绿色字母掉落黑客屏幕js效果

发表于2017/2/7 ⁄ JS网页特效 ⁄ 0条评论 ⁄ 热度 3,802℃

这是一个黑客屏幕的js效果，绿色字母掉落，最后形成一句话。可用在告白、恋人间的表白等。

仿黑客酷炫屏幕

下面是js代码实例：

<!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=gb2312" />
  <title>JS黑客屏幕字母掉落效果</title>
  <style type=text/css>
  .matrix{padding-right: 0px; padding-left: 0px; font-size: 10pt; padding-bottom: 0px; margin: 0px; width: 10px; padding-top: 0px; font-family: lucida console, courier, monotype; text-align: center}
  </style>
  </head>
  <body bgColor=#fef4d9>
  <center>JS仿黑客屏幕字母掉落效果</center><br><center>
<SCRIPT language=JavaScript type=text/javascript>
  var rows=11; // must be an odd number
  var speed=50; // lower is faster
  var reveal=2; // between 0 and 2 only. The higher, the faster the word appears
  var effectalign="default" //enter "center" to center it.
  var w3c=document.getElementById && !window.opera;;
  var ie45=document.all && !window.opera;
  var ma_tab, matemp, ma_bod, ma_row, x, y, columns, ma_txt, ma_cho;
  var m_coch=new Array();
  var m_copo=new Array();
  window.onload=function() {
  if (!w3c && !ie45) return
  var matrix=(w3c)?document.getElementById("matrix"):document.all["matrix"];
  ma_txt=(w3c)?matrix.firstChild.nodeValue:matrix.innerHTML;
  ma_txt=" "+ma_txt+" ";
  columns=ma_txt.length;
  if (w3c) {
  while (matrix.childNodes.length) matrix.removeChild(matrix.childNodes[0]);
  ma_tab=document.createElement("table");
  ma_tab.setAttribute("border", 0);
  ma_tab.setAttribute("align", effectalign);
  ma_tab.style.backgroundColor="#000000";
  ma_bod=document.createElement("tbody");
  for (x=0; x<rows; x++) {
  ma_row=document.createElement("tr");
  for (y=0; y<columns; y++) {
  matemp=document.createElement("td");
  matemp.setAttribute("id", "Mx"+x+"y"+y);
  matemp.className="matrix";
  matemp.appendChild(document.createTextNode(String.fromCharCode(160)));
  ma_row.appendChild(matemp);
  }
  ma_bod.appendChild(ma_row);
  }
  ma_tab.appendChild(ma_bod);
  matrix.appendChild(ma_tab);
  } else {
  ma_tab='<ta'+'ble align="'+effectalign+'" border="0" style="background-color:#000000">';
  for (var x=0; x<rows; x++) {
  ma_tab+='<t'+'r>';
  for (var y=0; y<columns; y++) {
  ma_tab+='<t'+'d class="matrix" id="Mx'+x+'y'+y+'"> </'+'td>';
  }
  ma_tab+='</'+'tr>';
  }
  ma_tab+='</'+'table>';
  matrix.innerHTML=ma_tab;
  }
  ma_cho=ma_txt;
  for (x=0; x<columns; x++) {
  ma_cho+=String.fromCharCode(32+Math.floor(Math.random()*94));
  m_copo[x]=0;
  }
  ma_bod=setInterval("mytricks()", speed);
  }
function mytricks() {
  x=0;
  for (y=0; y<columns; y++) {
  x=x+(m_copo[y]==100);
  ma_row=m_copo[y]%100;
  if (ma_row && m_copo[y]<100) {
  if (ma_row<rows+1) {
  if (w3c) {
  matemp=document.getElementById("Mx"+(ma_row-1)+"y"+y);
  matemp.firstChild.nodeValue=m_coch[y];
  }
  else {
  matemp=document.all["Mx"+(ma_row-1)+"y"+y];
  matemp.innerHTML=m_coch[y];
  }
  matemp.style.color="#33ff66";
  matemp.style.fontWeight="bold";
  }
  if (ma_row>1 && ma_row<rows+2) {
  matemp=(w3c)?document.getElementById("Mx"+(ma_row-2)+"y"+y):document.all["Mx"+(ma_row-2)+"y"+y];
  matemp.style.fontWeight="normal";
  matemp.style.color="#00ff00";
  }
  if (ma_row>2) {
  matemp=(w3c)?document.getElementById("Mx"+(ma_row-3)+"y"+y):document.all["Mx"+(ma_row-3)+"y"+y];
  matemp.style.color="#009900";
  }
  if (ma_row<Math.floor(rows/2)+1) m_copo[y]++;
  else if (ma_row==Math.floor(rows/2)+1 && m_coch[y]==ma_txt.charAt(y)) zoomer(y);
  else if (ma_row<rows+2) m_copo[y]++;
  else if (m_copo[y]<100) m_copo[y]=0;
  }
  else if (Math.random()>0.9 && m_copo[y]<100) {
  m_coch[y]=ma_cho.charAt(Math.floor(Math.random()*ma_cho.length));
  m_copo[y]++;
  }
  }
  if (x==columns) clearInterval(ma_bod);
  }
function zoomer(ycol) {
  var mtmp, mtem, ytmp;
  if (m_copo[ycol]==Math.floor(rows/2)+1) {
 for (ytmp=0; ytmp<rows; ytmp++) {
  if (w3c) {
  mtmp=document.getElementById("Mx"+ytmp+"y"+ycol);
  mtmp.firstChild.nodeValue=m_coch[ycol];
  }
  else {
  mtmp=document.all["Mx"+ytmp+"y"+ycol];
  mtmp.innerHTML=m_coch[ycol];
  }
  mtmp.style.color="#33ff66";
  mtmp.style.fontWeight="bold";
  }
  if (Math.random()<reveal) {
  mtmp=ma_cho.indexOf(ma_txt.charAt(ycol));
  ma_cho=ma_cho.substring(0, mtmp)+ma_cho.substring(mtmp+1, ma_cho.length);
  }
  if (Math.random()<reveal-1) ma_cho=ma_cho.substring(0, ma_cho.length-1);
  m_copo[ycol]+=199;
  setTimeout("zoomer("+ycol+")", speed);
  }
  else if (m_copo[ycol]>200) {
  if (w3c) {
  mtmp=document.getElementById("Mx"+(m_copo[ycol]-201)+"y"+ycol);
  mtem=document.getElementById("Mx"+(200+rows-m_copo[ycol]--)+"y"+ycol);
  }
  else {
  mtmp=document.all["Mx"+(m_copo[ycol]-201)+"y"+ycol];
  mtem=document.all["Mx"+(200+rows-m_copo[ycol]--)+"y"+ycol];
  }
  mtmp.style.fontWeight="normal";
  mtem.style.fontWeight="normal";
  setTimeout("zoomer("+ycol+")", speed);
  }
  else if (m_copo[ycol]==200) m_copo[ycol]=100+Math.floor(rows/2);
  if (m_copo[ycol]>100 && m_copo[ycol]<200) {
  if (w3c) {
  mtmp=document.getElementById("Mx"+(m_copo[ycol]-101)+"y"+ycol);
  mtmp.firstChild.nodeValue=String.fromCharCode(160);
  mtem=document.getElementById("Mx"+(100+rows-m_copo[ycol]--)+"y"+ycol);
  mtem.firstChild.nodeValue=String.fromCharCode(160);
  }
  else {
  mtmp=document.all["Mx"+(m_copo[ycol]-101)+"y"+ycol];
  mtmp.innerHTML=String.fromCharCode(160);
  mtem=document.all["Mx"+(100+rows-m_copo[ycol]--)+"y"+ycol];
  mtem.innerHTML=String.fromCharCode(160);
  }
  setTimeout("zoomer("+ycol+")", speed);
  }
  }
  // -->
  </SCRIPT>
  <div id=matrix>I love webym</div>
<p>更多代码请访问：<a href="http://www.webym.net/jiaocheng/jspage.html" target="_blank">webym</a></p>
  </center>
  </body>
  </html>

运行代码提示：您可以先修改部分代码再运行。

声明:如需转载，请注明来源于www.webym.net并保留原文链接：http://www.webym.net/jiaocheng/620.html