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Godofbrowser/cgpa.html

Created July 7, 2016 11:20
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Javascript cgpa calculator
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cgpa.html
<!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>
<title>Demo CGPA calculator</title>
<meta name="generator" content="Bluefish 2.2.7" >
<meta name="author " content="Ajeh Emeke" >
<meta name="ROBOTS" content="NOINDEX, NOFOLLOW">
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8">
<meta http-equiv="content-style-type" content="text/css">
<meta http-equiv="expires" content="0">
<link href="" rel="stylesheet" type="text/css" />
<script src="" ></script>
<style>
/* reset */ *{margin: 0; padding: 0; list-style: none; text-decoration: none;}
#header{
width: 100%;
min-width: 320px;
background-color: greenyellow;
position: fixed;
top: 0;
left: 0;
box-shadow: 0 0 5px 3px grey;
}
#header span{
position: absolute;
bottom: 5px;
right: 5px;
clear: both;
}
#header h1{
color: #FFC;
max-width: 700px;
float: left;
text-shadow: 2px 2px grey;
padding: 20px;
text-align: center;
}
#cont{
min-width: 300px;
width: 100%;
min-width: 320px;
margin:0 auto;
margin-top: 100px;
clear: both;
}
fieldset{
width: 100%;
max-width: 400px;
margin-top: 20px;
padding: 5px 0;
background-color: #FFC;
transition: all .7sec linear;
}
fieldset:last-child{margin-bottom: 20px;}
form label{color: brown; width: 100%;margin-left: 3%; float: left; clear: both;}
form #radiobtn label{color: blue; width: 30%;margin-left: 3%; clear: none;}
form{
background-color: greenyellow;
width:92%;
max-width: 400px;
border-radius: 1px;
border-color: yellow;
padding: 10px 2%;
color: purple;
margin: 20px auto;
box-shadow: 0 0 5px 3px grey;
}
form input[type= "text"], form input[type= "checkbox"]{
width: 90%;
float: none;
padding: 4px 2%;
margin: 5px auto 0 auto;
color: blue;
background-color: white;
}
form input[type= "submit"], [type= "reset"]{
background-color: black;
color: white;
padding: 8px;
font-size: 120%;
margin: 10px;
border: 3px solid transparent;
border-radius: 10px;
}
form input[type= "submit"]:hover, [type= "reset"]:hover{
background-color: white;
color: black;
border: 3px solid black;
border-radius: 10px;
}
textarea{
width: 90%;
height: 150px;
padding:2%;
color: blue;
max-width: 90%;
}
@media screen and (max-width: 550px){
#cont{margin-top: 150px;}
}
@media screen and (max-width: 400px){
#cont{margin-top: 170px;}
}
</style>
</head>
<body>
<div id="header"><h1>CGPA CALCULATOR (javaScript)</h1> <span>Designed by: <a href="http://facebook.com/godofbrowser">Ajeh Emeke</a></span></div>
<div id="cont">
<form>
<fieldset>
Hello!<br />
This is my first version of the javaScript cgpa calculator. <br />
In this version, the user inputs the number of courses offered and the script automatically creates a number of boxes according to the input value.<br />
Next, user enters course codes, units and scores then clicks on calculate. If there are no errors in inputs, the script out puts CGPA in a dialog box.<br />
<br />
In upcoming versions, i intend making the script print out results neatly in a table and also give users the ability to prepare list of courses,scores and units in a txt file which can then be uploaded for calculation.<br />
I believe that will ease off the stress of having to type again and again every semester.
</fieldset>
</form>
<form method="post" action="" onSubmit="return formsubmit();" id="courseform">
<fieldset id="radiobtn">
<label>CGPA TYPE:</label>
<label><input type="radio" name="action" value="update" /> 4 POINT</label>
<label><input type="radio" name="action" value="remove" checked="checked"/>5 POINT</label></fieldset>
<fieldset><label>How many courses did you offer? (max 5)<input type="text" name="box" placeholder="Enter a number of courses" onkeyup="addbox(this.value)" /></label></fieldset>
<legend id="boxes">
<fieldset>
<label>COURSE CODE:<input type="text" name="code1" id="code1" placeholder="eg: EBA101" /></label>
<label>UNIT:<input type="text" name="unit1" id="unit1" value="" /></label>
<label>SCORE (max 100):<input type="text" name="score1" id="score1" value="" /></label>
</fieldset>
</legend>
<fieldset>
<input type="reset" value="CLEAR" />
<input type="submit" name="submitquery" value="PROCEED" />
</fieldset>
<input type="hidden" name="errors" value="" />
</form>
</div>
<script>
function formsubmit(){
var x;
x=confirm("Calculate CGPA?");
if (x) {
calcgpa();
}
return false;
}
function addbox(x) {
//var event = document.event.onkeyPress;
//var key = event.keyCode || event.which;
//alert(key);
if (isNaN(x) && x.length > 0) { alert("Number of courses must be a number"); return}
if (x.length > 0 && x!=0) {
var boxes = document.getElementById("boxes");
boxes.innerHTML="";
var a,b,c,d,e,f,g,h,m;
for (m=1; m<=x; m++) {
a = document.createElement("fieldset"); a.class="fieldset";
b = document.createElement("label");
c = document.createTextNode("COURSE CODE:");
d = document.createTextNode("UNIT:");
e = document.createTextNode("SCORE:");
f = document.createElement("input");
f.type = "text";
f.id = f.value = f.name = "code"+m;
g = document.createElement("input");
g.type = "text";
g.id = g.value = g.name = "unit"+m;
h = document.createElement("input");
h.type = "text";
h.id = h.value = h.name = "score"+m;
b.appendChild(c); //text to label
b.appendChild(f); //input(course code) to label
a.appendChild(b); //label to current fieldset
b.appendChild(d); //text to label
b.appendChild(g); //input(course unit) to label
a.appendChild(b); //label to current fieldset
b.appendChild(e); //text to label
b.appendChild(h); //input(score) to label
a.appendChild(b); //label to current fieldset
boxes.appendChild(a); //current fieldset to legend with id=boxes
}
}
}
function calcgpa() {
var form = document.getElementById("courseform");
var i,cgpa,c,s,u,totalUnitsAccumulated=totalUnitsTaken=0;
var numberOfBoxes = form.box.value;
if (error(numberOfBoxes)) {
if (isNaN(numberOfBoxes) || numberOfBoxes.length == 0) { alert("Number of courses must be a number"); return}
for (i=1; i <= numberOfBoxes; i++) {
c = document.getElementById("code"+i).value;
s = document.getElementById("score"+i).value;
u = document.getElementById("unit"+i).value;
totalUnitsAccumulated += scoreInUnitsType5(s,u);
totalUnitsTaken += Math.floor(u);
}
//after getting totalunits accumulated and taken, we compute cgpa
cgpa = totalUnitsAccumulated / totalUnitsTaken;
alert(cgpa);
}
function error(x) {
for (i=1; i <= numberOfBoxes; i++) {
c = document.getElementById("code"+i).value;
s = document.getElementById("score"+i).value;
u = document.getElementById("unit"+i).value;
if ((s > 100) || (s < 0) || isNaN(s)) { alert("Score"+i+" must be a number between 0 and 100"); return false;}
if ((s > 100) || (s < 0) || isNaN(s)) { alert("Score"+i+" must be a number between 0 and 100"); return false;}
}
return true;
}
function scoreInUnitsType5(score,unit) {
if(score >= 70){ return 5*unit;}
if(score >= 60){ return 4*unit;}
if(score >= 50){ return 3*unit;}
if(score >= 40){ return 2*unit;}
if(score >= 30){ return 1*unit;}
else{ return 0*unit;}
}
}
</script>
</body>
</html>
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