js实现黑客帝国字母掉落效果

2017-05-09 网页编程网 网页编程网

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js实现黑客帝国字母掉落效果</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实现黑客帝国字母掉落效果</center><br><center>

<SCRIPT>
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 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>you are a dog</div>
</center>
</body>
</html>

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