Heim  >  Artikel  >  Web-Frontend  >  JavaScript-Methode zur Implementierung der MIPS-Multiplikationssimulation_Javascript-Fähigkeiten

JavaScript-Methode zur Implementierung der MIPS-Multiplikationssimulation_Javascript-Fähigkeiten

WBOY
WBOYOriginal
2016-05-16 16:03:271275Durchsuche

Das Beispiel in diesem Artikel beschreibt die Methode zur Implementierung der MIPS-Multiplikationssimulation in JavaScript. Teilen Sie es als Referenz mit allen. Die Details lauten wie folgt:

<!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 runat="server">
 <title>MIPS MULTIPLICATION SIMULATOR </title>
 <script type="text/javascript">
  /* CREATED BY SERKAN SENDUR */
  function StringToNumberArray(Bin) {
   var numberArray = [];
   for (var i = 0; i < Bin.length; i++) {
    numberArray.push(Bin.substring(i, i + 1));
   }
   return numberArray;
  }
  function ConvertToDecimal(Bin) {
   var decimalNumber = 0;
   var numberArray = StringToNumberArray(Bin);
   numberArray.reverse();
   for (var i = 0; i < numberArray.length; i++) {
    decimalNumber += numberArray[i] * Math.pow(2, i);
   }
   return decimalNumber;
  }
  function ConvertToBinary(dec) {
   var bits = [];
   var dividend = dec;
   var remainder = 0;
   while (dividend >= 2) {
    remainder = dividend % 2;
    bits.push(remainder);
    dividend = (dividend - remainder) / 2;
   }
   bits.push(dividend);
   bits.reverse();
   return bits.join("");
  }
  function Multiply() {
   var firstNumber = document.getElementById("txtFirst").value;
   var secondNumber = document.getElementById("txtSecond").value;
   var multiplier = ConvertToBinary(firstNumber);
   var multiplicant = ConvertToBinary(secondNumber);
   var product = 0;
   var step = "Initial values";
   var iteration = 0;
   AppendToTable(iteration, step, multiplier, multiplicant, product);
   multiplicationAlgoritm(multiplier, multiplicant, product, 4);
  }
  function multiplicationAlgoritm(multiplier, multiplicant, product, counter) {
   if (counter > 0) {
    var iteration = 5 - counter;
    var decProduct = ConvertToDecimal(product);
    var decMultiplier = ConvertToDecimal(multiplier);
    var decMultiplicant = ConvertToDecimal(multiplicant);
    if (Right(multiplier, 1) == "1") {
     decProduct = decProduct + decMultiplicant;
     product = ConvertToBinary(decProduct);
     AppendToTable(iteration, "1a", multiplier, multiplicant, product);
    }
    else {
     AppendToTable(iteration, 1, multiplier, multiplicant, product);
    }
    decMultiplicant = ConvertToDecimal(multiplicant);
    decMultiplicant = decMultiplicant << 1;
    multiplicant = ConvertToBinary(decMultiplicant);
    AppendToTable(iteration, 2, multiplier, multiplicant, product);
    decMultiplier = ConvertToDecimal(multiplier);
    decMultiplier = decMultiplier >> 1;
    multiplier = ConvertToBinary(decMultiplier);
    AppendToTable(iteration, 3, multiplier, multiplicant, product);
    counter--;
    multiplicationAlgoritm(multiplier, multiplicant, product, counter);
   }
  }
  function AppendToTable(iteration, step, multiplier, multiplicant, product) {
   var row = document.getElementById("tblResults").insertRow();
   var cell = row.insertCell();
   cell.innerText = iteration;
   var cell = row.insertCell();
   cell.innerText = step;
   var cell = row.insertCell();
   cell.innerText = multiplier;
   var cell = row.insertCell();
   cell.innerText = multiplicant;
   var cell = row.insertCell();
   cell.innerText = product;
  }
  function ResetTable() {
   for (var i = document.getElementById("tblResults").rows.length; i > 1; i--) {
    document.getElementById("tblResults").deleteRow(i - 1);
   }
  }
  function Right(str, n) {
   if (n <= 0)
    return "";
   else if (n > String(str).length)
    return str;
   else {
    var iLen = String(str).length;
    return String(str).substring(iLen, iLen - n);
   }
  }
 </script>
 <style type="text/css">
  .style1
  {
   border-collapse: collapse;
   border-style: solid;
   border-width: 1px;
  }
  .style2
  {
   width: 6px;
  }
  .style4
  {
   color: #3366FF;
  }
  .style5
  {
   color: #0066FF;
  }
 </style>
</head>
<body>
 <br />
 <h3 class="style4">
   WELCOME TO MIPS MULTIPLICATION SIMULATOR</h3>
 <hr style="color: #0033CC" />
 <table>
  <tr>
   <td class="style5">
    Multiplier :
   </td>
   <td>
    <input id="txtFirst" type="text" />
   </td>
  </tr>
  <tr>
   <td class="style5">
    Multiplicant :
   </td>
   <td>
    <input id="txtSecond" type="text" />
   </td>
  </tr>
  <tr>
   <td align="center" colspan="2">
    <input id="btnMultiply" type="button" value="Multiply" 
 onclick="ResetTable();Multiply();"
     style="color: #3399FF" />
   </td>
  </tr>
 </table>
 <table class="style1" cellpadding="2" cellspacing="2"
 id="tblResults">
  <tr style="color: White">
   <td bgcolor="#3366FF">
    Iteration
   </td>
   <td bgcolor="#3366FF">
    Step
   </td>
   <td bgcolor="#3366FF">
    Multiplier
   </td>
   <td bgcolor="#3366FF" class="style2">
    Multiplicant
   </td>
   <td bgcolor="#3366FF">
    Product
   </td>
  </tr>
 </table>
</body>
</html>

Ich hoffe, dass dieser Artikel für das JavaScript-Programmierdesign aller hilfreich sein wird.

Stellungnahme:
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn