陳香怡期末考17+18週 JavaScript 金融計算

劉任昌2021年1月期末考

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現值
利率
期數
金流
終值

對照EXCEL先打開從範圍定義名稱

對照EXCEL金融計算

程式碼

<h1>劉任昌2021年1月期末考</h1>

<table border="1">

<tbody>

<tr><td>現值</td><td><input id="p" type="number" /></td><td><input onclick="CompP()" type="button" value="計算現值" /></td><td id="p_" width="160"></td></tr>

<tr><td>利率</td><td><input id="y" type="number" value="0.001" /></td></tr>

<tr><td>期數</td><td><input id="n" type="number" value="240" /></td><td><input onclick="CompN()" type="button" value="計算期數" /></td><td id="n_"></td></tr>

<tr><td>金流</td><td><input id="m" type="number" value="0" /></td><td><input onclick="CompM()" type="button" value="計算金流" /></td><td id="m_"></td></tr>

<tr><td>終值</td><td><input id="f" type="number" value="0"/></td>><td><input onclick="CompF()" type="button" value="計算終值" /></td><td id="f_"></td></tr>

</tbody></table>

<h1>對照EXCEL先打開從範圍定義名稱</h1>

<div class="separator" style="clear: both;"><a href="https://1.bp.blogspot.com/-NhqillJQPIY/X_KQfsTweWI/AAAAAAAAAMQ/cYNyxy-XofYKPvaJoveXV9k0Cq3zr4PVwCLcBGAsYHQ/s746/1.JPG" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="600" data-original-height="408" data-original-width="746" src="https://1.bp.blogspot.com/-NhqillJQPIY/X_KQfsTweWI/AAAAAAAAAMQ/cYNyxy-XofYKPvaJoveXV9k0Cq3zr4PVwCLcBGAsYHQ/s600/1.JPG"/></a></div>

<h1>對照EXCEL金融計算</h1>

<div class="separator" style="clear: both;"><a href="https://1.bp.blogspot.com/-WPf-GYtWKZs/X_KQkmYzL0I/AAAAAAAAAMU/x_IbFrzYct4mcZhwMu1_aE2Vbk5lUPI7gCLcBGAsYHQ/s1066/2.JPG" style="display: block; padding: 1em 0; text-align: center; "><img alt="" border="0" width="600" data-original-height="450" data-original-width="1066" src="https://1.bp.blogspot.com/-WPf-GYtWKZs/X_KQkmYzL0I/AAAAAAAAAMU/x_IbFrzYct4mcZhwMu1_aE2Vbk5lUPI7gCLcBGAsYHQ/s600/2.JPG"/></a></div>

<h1>程式碼</h1>

<script>

  function CompF(){

  var y = document.getElementById("y").value; 

  var m = document.getElementById("m").value;

  var p = document.getElementById("p").value;

  var n = document.getElementById("n").value;

  var fvif = y;

  fvif++;          // pvif = 1+y

  pvif = fvif ** n ; //pvif = 1/(1+y)^n

  var f = p * fvif - m / y * (fvif - 1) ;

  document.getElementById("f_").innerHTML = f.toFixed(6);

}

function CompN(){    //計算現值 p 

  var y = document.getElementById("y").value;

  var m = document.getElementById("m").value;

  var p = document.getElementById("p").value;

  var f = document.getElementById("f").value;

  var pvif = y;

  pvif++;        // pvif = 1+y

  var n = Math.log( ( f - m/y )/( p - m/y ) )/Math.log( pvif ) ;

  document.getElementById("n_").innerHTML = n.toFixed(2);

}

function CompM(){   //計算金流 m

  var y = document.getElementById("y").value;

  var n = document.getElementById("n").value;

  var p = document.getElementById("p").value;

  var f = document.getElementById("f").value;

  var pvif = y;

  pvif++;

  pvif =1/pvif**n;

  var m = y*( p - f * pvif )/( 1 - pvif ) ;

  document.getElementById("m_").innerHTML = m.toFixed(2);

}

function CompP(){

  var y = document.getElementById("y").value;

  var n = document.getElementById("n").value;

  var m = document.getElementById("m").value;

  var f = document.getElementById("f").value;

  var pvif = y;

  pvif++;

  pvif =1/pvif**n;

  var p = (1-pvif)*m/y + f * pvif;

  document.getElementById("p_").innerHTML = p.toFixed(2);

}

</script>