I created GPA calculator

only you need copy and paste this code but image you need to download I will give you link to get that image.. LIVE preview included bottom of the page...
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  <!DOCTYPE html>
<html>
    <head>
      
    
        <title>for IT student gpa calculator</title>

        <style>
        #customers {
            font-family: Arial, Helvetica, sans-serif;
            border-collapse: collapse;
            width: 100%;
          }
          
          #customers td, #customers th {
            border: 1px solid #ddd;
            padding: 8px;
          }
          
          #customers tr:nth-child(even){background-color: #f2f2f2;}
          
          #customers tr:hover {background-color: #ddd;}
          
          #customers th {
            padding-top: 12px;
            padding-bottom: 12px;
            text-align: left;
            background-color: #04AA6D;
            color: white;
          }
          .topic{
            text-align: center;
            font-family: monospace;
            font-style: italic;
          }
          .btn{
            padding: 10px 10px 10px 10px;
            margin-top: 20px;
            border-radius: 5px;
            outline: none;
            border: 1px solid black;

          }
          .btn:hover{
            cursor: pointer;
            color: #ffff;
            background-color: #04AA6D;
            border: 2px solid #ffff;
            padding: 10px 12px 10px 12px;
          }
          .box{
            padding: 5px 5px 5px 5px;
            border-radius: 5px;
            outline: none;
            border: 2px solid rgb(44, 195, 92);
            text-align: center;
          }
          .selectBox{

            border: 2px solid rgb(44, 195, 92);
            border-radius: 5px;
            padding: 4px;

          }
          #answer{
            width: 100px;
            height: 50px;
            border: 2px solid  rgb(44, 195, 92);
            margin-top: 20px;
            padding:0px 20px 0px 10px;
            border-radius: 5px;
            text-align: center;
            background-color: #04AA6D;
            color: #ffff;
            font-weight: 300;
          }
          body{
            background-image: url(back.jpg);
            background-size: cover;
            background-repeat: no-repeat;
            background-attachment: fixed;
          }
          </style>

    </head>
<body>

    <h1 class="topic">----GPA calculator for IT students 3rd year first sem----</h1>
    <form>
        <table border="1" id="customers">
            <tr>
                <th>module</th>
                <th>credit</th>
                <th>grade</th>
            </tr>
            <!------------------------------subject 1----------------------------->
            <tr>
                <td>IT 3090	Business Management for IT</td>
                <td><input type="number" id="credit1" value="3" class="box"></td>
                <td>
                    <select id="grade1" class="selectBox">

                        <option value="A+">A+</option>
                        <option value="A">A</option>
                        <option value="A-">A-</option>
                        <option value="B+">B+</option>
                        <option value="B">B</option>
                        <option value="B-">B-</option>
                        <option value="C+">C+</option>
                        <option value="C">C</option>
                        <option value="C-">C-</option>
                        <option value="D+">D+</option>
                        <option value="D">D</option>
                        <option value="E">E</option>
                        <option value="R">R</option>

                   </select>
            </td>
            </tr>
            <!----------------------------------subject2------------------------------------->
            <tr>
                <td>IT 3080	Data Sceince & Analytics</td>
                <td><input type="number" id="credit2" value="4" class="box"></td>
                <td>
                    <select id="grade2" class="selectBox">

                        <option value="A+">A+</option>
                        <option value="A">A</option>
                        <option value="A-">A-</option>
                        <option value="B+">B+</option>
                        <option value="B">B</option>
                        <option value="B-">B-</option>
                        <option value="C+">C+</option>
                        <option value="C">C</option>
                        <option value="C-">C-</option>
                        <option value="D+">D+</option>
                        <option value="D">D</option>
                        <option value="E">E</option>
                        <option value="R">R</option>

                   </select>
            </td>
            </tr>
            <!-----------------------subject 3-------------------------------->
            <tr>
                <td>IT 3070	Information Assurance & Security</td>
                <td><input type="number" id="credit3" value="4" class="box"></td>
                <td>
                    <select id="grade3" class="selectBox">

                        <option value="A+">A+</option>
                        <option value="A">A</option>
                        <option value="A-">A-</option>
                        <option value="B+">B+</option>
                        <option value="B">B</option>
                        <option value="B-">B-</option>
                        <option value="C+">C+</option>
                        <option value="C">C</option>
                        <option value="C-">C-</option>
                        <option value="D+">D+</option>
                        <option value="D">D</option>
                        <option value="E">E</option>
                        <option value="R">R</option>

                   </select>
            </td>
            </tr>
            <!-----------------------subject 4-------------------------------->
            <tr>
                <td>IT 3060	Human Computer Interaction</td>
                <td><input type="number" id="credit4" value="4" class="box"></td>
                <td>
                    <select id="grade4" class="selectBox">

                        <option value="A+">A+</option>
                        <option value="A">A</option>
                        <option value="A-">A-</option>
                        <option value="B+">B+</option>
                        <option value="B">B</option>
                        <option value="B-">B-</option>
                        <option value="C+">C+</option>
                        <option value="C">C</option>
                        <option value="C-">C-</option>
                        <option value="D+">D+</option>
                        <option value="D">D</option>
                        <option value="E">E</option>
                        <option value="R">R</option>

                   </select>
                  
            </td>
            
            </tr>
         
        </table>
        <input type="button" class="btn" value="Calculate GPA" onclick="MyFunction()">
    </form>
   <div id="answer">

   </div>
  <script>

    function MyFunction(){
       // alert("hey dear");
       //get all credits//
       var credit1=document.getElementById("credit1").value;
       credit1=parseFloat(credit1);

       var credit2=document.getElementById("credit2").value;
       credit2=parseFloat(credit2);

       var credit3=document.getElementById("credit3").value;
       credit3=parseFloat(credit3);

       var credit4=document.getElementById("credit4").value;
       credit4=parseFloat(credit4);

      //get all grades//
      //grade number 1 bmit module//

      var grade1=document.getElementById("grade1");
      var a=grade1.options[grade1.selectedIndex].value;

      //grade number 2 DS & A module//

      var grade2=document.getElementById("grade2");
      var b=grade2.options[grade2.selectedIndex].value;

      //grade number 3 IT 3070	Information Assurance & Security module//

      var grade3=document.getElementById("grade3");
      var c=grade3.options[grade3.selectedIndex].value;

      //grade number 4 HCI module//

      var grade4=document.getElementById("grade4");
      var d=grade4.options[grade4.selectedIndex].value;

      var FinalGrade1;
      var FinalGrade2;
      var FinalGrade3;
      var FinalGrade4;
      var gpa1;
      var gpa2;
      var gpa3;
      var gpa4;

      if(a==="A+"){

        FinalGrade1=a;
        gpa1=4.00;

       // alert(FinalGrade);

      }
      else if(a==="A"){
        FinalGrade1=a;
        gpa1=4.00;
       // alert(FinalGrade);

      }
      else if(a==="A-"){

        FinalGrade1=a;
        gpa1=3.70;
       // alert(FinalGrade);

      }
      else if(a==="B+"){

        FinalGrade1=a;
        gpa1=3.30;
        //alert(FinalGrade);

      }
      else if(a==="B"){

        FinalGrade1=a;
        gpa1=3.00;
        //alert(FinalGrade);

      }
      else if(a==="B-"){

        FinalGrade1=a;
        gpa1=2.70;
       // alert(FinalGrade);

      }
      else if(a==="C+"){
        FinalGrade1=a;
        gpa1=2.30;
       // alert(FinalGrade);

      }
      else if(a==="C"){
        FinalGrade1=a;
        gpa1=2.00;
        //alert(FinalGrade);

      }
      else if(a==="C-"){
        FinalGrade1=a;
        gpa1=1.70;
       // alert(FinalGrade);

      }
      else if(a==="D+"){
        FinalGrade1=a;
        gpa1=1.30;
       // alert(FinalGrade);

      }
      else if(a==="D"){
        FinalGrade1=a;
        gpa1=1.00;
       // alert(FinalGrade);

      }
      else if(a==="E"){
        FinalGrade1=a;
        gpa1=0.00;
       // alert(FinalGrade);

      }
      else{

        FinalGrade1="R";
        gpa1=0.00;
       // alert(FinalGrade);

      }
   
    //--------------------------------------------module 2----------------------------------------//

            
        if(b==="A+"){

        FinalGrade2=b;
        gpa2=4.00;
        // alert(FinalGrade);

        }
        else if(b==="A"){
        FinalGrade2=b;
        gpa2=4.00;
        // alert(FinalGrade);

        }
        else if(b==="A-"){

        FinalGrade2=b;
        gpa2=3.70;
        // alert(FinalGrade);

        }
        else if(b==="B+"){

        FinalGrade2=b;
        gpa2=3.30;
        //alert(FinalGrade);

        }
        else if(b==="B"){

        FinalGrade2=b;
        gpa2=3.00;
        //alert(FinalGrade);

        }
        else if(b==="B-"){

        FinalGrade2=b;
        gpa2=2.70;
        // alert(FinalGrade);

        }
        else if(b==="C+"){
        FinalGrade2=b;
        gpa2=2.30;
        // alert(FinalGrade);

        }
        else if(b==="C"){
        FinalGrade2=b;
        gpa2=2.00;
        //alert(FinalGrade);

        }
        else if(b==="C-"){
        FinalGrade2=b;
        gpa2=1.70;
        // alert(FinalGrade);

        }
        else if(b==="D+"){
        FinalGrade2=b;
        gpa2=1.30;
        // alert(FinalGrade);

        }
        else if(b==="D"){
        FinalGrade2=b;
        gpa2=1.00;
        // alert(FinalGrade);

        }
        else if(b==="E"){
        FinalGrade2=b;
        gpa2=0.00;
        // alert(FinalGrade);

        }
        else{

        FinalGrade2="R";
        gpa2=0.00;
        // alert(FinalGrade);

        }
       //---------------------------------------module3--------------------------------//

        if(c==="A+"){

        FinalGrade3=c;
        gpa3=4.00;
        // alert(FinalGrade);

        }
        else if(c==="A"){
        FinalGrade3=c;
        gpa3=4.00;
        // alert(FinalGrade);

        }
        else if(c==="A-"){

        FinalGrade3=c;
        gpa3=3.70;
        // alert(FinalGrade);

        }
        else if(c==="B+"){

        FinalGrade3=c;
        gpa3=3.30;
        //alert(FinalGrade);

        }
        else if(c==="B"){

        FinalGrade3=c;
        gpa3=3.00;
        //alert(FinalGrade);

        }
        else if(c==="B-"){

        FinalGrade3=c;
        gpa3=2.70;
        // alert(FinalGrade);

        }
        else if(c==="C+"){
        FinalGrade3=c;
        gpa3=2.30;
        // alert(FinalGrade);

        }
        else if(c==="C"){
        FinalGrade3=c;
        gpa3=2.00;
        //alert(FinalGrade);

        }
        else if(c==="C-"){
        FinalGrade3=c;
        gpa3=1.70;
        // alert(FinalGrade);

        }
        else if(c==="D+"){
        FinalGrade3=c;
        gpa3=1.30;
        // alert(FinalGrade);

        }
        else if(c==="D"){
        FinalGrade3=c;
        gpa3=1.00;
        // alert(FinalGrade);

        }
        else if(c==="E"){
        FinalGrade3=c;
        gpa3=0.00;
        // alert(FinalGrade);

        }
        else{

        FinalGrade3="R";
        gpa3=0.00;
        // alert(FinalGrade);

        }

        //---------------------------------------module4--------------------------------//

        if(d==="A+"){

        FinalGrade4=d;
        gpa4=4.00;
        // alert(FinalGrade);

        }
        else if(d==="A"){
        FinalGrade4=d;
        gpa4=4.00;
        // alert(FinalGrade);

        }
        else if(d==="A-"){

        FinalGrade4=d;
        gpa4=3.70;
        // alert(FinalGrade);

        }
        else if(d==="B+"){

        FinalGrade4=d;
        gpa4=3.30;
        //alert(FinalGrade);

        }
        else if(d==="B"){

        FinalGrade4=d;
        gpa4=3.00;
        //alert(FinalGrade);

        }
        else if(d==="B-"){

        FinalGrade4=d;
        gpa4=2.70;
        // alert(FinalGrade);

        }
        else if(d==="C+"){
        FinalGrade4=d;
        gpa4=2.30;
        // alert(FinalGrade);

        }
        else if(d==="C"){
        FinalGrade4=d;
        gpa4=2.00;
        //alert(FinalGrade);

        }
        else if(d==="C-"){
        FinalGrade4=d;
        gpa4=1.70;
        // alert(FinalGrade);

        }
        else if(d==="D+"){
        FinalGrade4=d;
        gpa4=1.30;
        // alert(FinalGrade);

        }
        else if(d==="D"){
        FinalGrade4=d;
        gpa4=1.00;
        // alert(FinalGrade);

        }
        else if(d==="E"){
        FinalGrade4=d;
        gpa4=0.00;
        // alert(FinalGrade);

        }
        else{

        FinalGrade4="R";
        gpa4=0.00;
        // alert(FinalGrade);

        }

       // alert(gpa4);

       var TotalCredit=credit1+credit2+credit3+credit4;//15
      
       
       var num1=credit1*gpa1;
       var num2=credit2*gpa2;
       var num3=credit3*gpa3;
       var num4=credit4*gpa4;

       var TotalValue=num1+num2+num3+num4;

       var result=TotalValue/TotalCredit;
     //  alert(result);

     if(!isNaN(result)){
        document.getElementById("answer").innerHTML="My GPA is:"+result
     }

      
      
       // var select=document.getElementById("grade1");
       // alert(select.options[select.selectedIndex].value);

    }//end of function//
    
    

  </script>


</body>
</html>
preview
download link below
live preview click here
I created GPA calculator

Posted by Chathuranga Ranasinghe

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