topical media & game development
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lib-js-math-calculator-easter.htm / htm



  
  <!-- TWO STEPS TO INSTALL CALCULATOR FOR EASTER SUNDAY:
  
    1.  Copy the coding into the HEAD of your HTML document
    2.  Add the last code into the BODY of your HTML document  -->
  
  <!-- STEP ONE: Paste this code into the HEAD of your HTML document  -->
  
  <HEAD>
  
  <script type="text/javascript">
  <!-- Begin
  /* This script and many more are available free online at
  The JavaScript Source!! http://javascript.internet.com
  Created by: Matthew Ogden :: http://www.home.earthlink.net/~ogden1972/ */
  function d()
  {
  var a = document.form1.year.value;
  a=a*1
  if (a >= 2100) c=5;
  if (a < 2100) c=6;
  if (a > 2199) alert("you must enter a date between 1583 - 2199");
  if ( a<=1582) alert("you must enter a date between 1583 - 2199");
   s = a/4
  var b = Math.floor( s ) ;
  sn=(b+a+c)/7
  var d = Math.floor( sn ) ;
  sundaynumber = (sn-d)*7
  m =(a*1)+1
  g = m/19
  var e = Math.floor( g ) ;
  var goldennumber = (g-e)*19;
  var sundaynumber= Math.round(sundaynumber) ;
  if(a>2199) sundaynumber=7;
  if(a<=1582) sundaynumber=7;
  var goldennumber= Math.round(goldennumber) ;
  
  var t1= "April 16April 17April 18April 19April 20April 21April 15" ;
  var t2= "April  9April 10April  4April  5April  6April  7April  8" ;
  var t3= "March 26March 27March 28March 29March 30March 24March 25" ;
  var t4= "April 16April 17April 18April 12April 13April 14April 15" ;
  var t5= "April  2April  3April  4April  5April  6April  7April  1";
  var t6= "April 23April 24April 25April 19April 20April 21April 22" ;
  var t7= "April  9April 10April 11April 12April 13April 14April 15" ;
  var t8= "April  2April  3April  4March 29March 30March 31April  1";
  var t9= "April 23April 17April 18April 19April 20April 21April 22" ;
  var t10= "April  9April 10April 11April 12April  6April  7April  8" ;
  var t11= "March 26March 27March 28March 29March 30March 31April  1" ;
  var t12= "April 16April 17April 18April 19April 20April 14April 15" ;
  var t13= "April  9April  3April  4April  5April  6April  7April  8" ;
  var t14= "March 26March 27March 28March 29March 23March 24March 25" ;
  var t15= "April 16April 17April 11April 12April 13April 14April 15" ;
  var t16= "April  2April  3April  4April  5April  6March 31April  1" ;
  var t17= "April 23April 24April 18April 19April 20April 21April 22" ;
  var t18= "April  9April 10April 11April 12April 13April 14April 8" ;
  var t19= "April  2April  3March 28March 29March 30March 31April  1" ;
  
  if (goldennumber == 1) chart=t1;
  if (goldennumber == 2) chart=t2;
  if (goldennumber == 3) chart=t3;
  if (goldennumber == 4) chart=t4;
  if (goldennumber == 5) chart=t5;
  if (goldennumber == 6) chart=t6;
  if (goldennumber == 7) chart=t7;
  if (goldennumber == 8) chart=t8;
  if (goldennumber == 9) chart=t9;
  if (goldennumber == 10) chart=t10;
  if (goldennumber == 11) chart=t11;
  if (goldennumber == 12) chart=t12;
  if (goldennumber == 13) chart=t13;
  if (goldennumber == 14) chart=t14;
  if (goldennumber == 15) chart=t15;
  if (goldennumber == 16) chart=t16;
  if (goldennumber == 17) chart=t17;
  if (goldennumber == 18) chart=t18;
  if (goldennumber == 19) chart=t19;
  
  if (sundaynumber==0)  document.form1.date.value = (chart.substring(0,8) )+", "+a;
  if (sundaynumber==6) document.form1.date.value = (chart.substring(8,16) )+", "+a;
  if (sundaynumber==5)  document.form1.date.value = (chart.substring(16,24) )+", "+a;
  if (sundaynumber==4)  document.form1.date.value = (chart.substring(24,32) )+", "+a;
  if (sundaynumber==3)  document.form1.date.value = (chart.substring(32,40) )+", "+a;
  if (sundaynumber==2)  document.form1.date.value = (chart.substring(40,48) )+", "+a;
  if (sundaynumber==1)  document.form1.date.value = (chart.substring(48,56) )+", "+a;
  if(sundaynumber==7) document.form1.date.value = "error";
  }
  // End -->
  </script>
  </HEAD>
  
  <!-- STEP TWO: Copy this code into the BODY of your HTML document  -->
  
  <BODY>
  
  <div align="center">
  <h1>Calculator for Easter Sunday</h1>
  Enter the year you wish to find the day that Easter falls on.<br>Then click the calculate button.
  <br><br>
  <form Name="form1">
  Year:  <input type="text" name="year" size="15">    
  Date:  <input type="text" name="date" readonly size="15">
  <br><br>
  <input Type="button" value="Calculate" onclick="d()">    
  <input type="Reset" value="Clear">    
  <input Type="button" value="Print" onclick="window.d();print()">
  </form>
  </div>
  
  <p><center>
  <font face="arial, helvetica" size"-2">Free JavaScripts provided<br>
  by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
  </center><p>
  
  <!-- Script Size:  4.50 KB -->
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.