Notes

APK#6:
var data = [
{
"firstname": "John",
"lastname": "Smith",
"dob": "1/15/1999",
"test1": 30,
"test2": 30,
"test3": 30,
},
{
"firstname": "Thomas",
"lastname": "Edison",
"dob": "1/15/2010",
"test1": null,
"test2": 60,
"test3": 64,
},
{
"firstname": "Nicolas",
"lastname": "Tesla",
"dob": "1/15/1825",
"test1": 80,
"test2": null,
"test3": 90,
},
{
"firstname": "Walter",
"lastname": "White",
"dob": "1/15/1960",
"test1": 100,
"test2": 90,
"test3": 97,
},
{
"firstname": "Bruce",
"lastname": "Wayne",
"dob": "1/15/1960",
"test1": 50,
"test2": 90,
"test3": 97,
},
]

$(function () {
start(data);
})

//Create a jQuery ready function and call start() method in it , Pass data as argument to start method.

function calcAge() {
var date = new Date();
var d = date.getFullYear();
var temp = [];
for (var i in data) {
temp.push(Math.abs(parseInt(data[i].dob.slice(-4) - (d - 1))));
}
return temp;
//accept date of birth and return the age based on birth year.
}

function fullname() {
var temp = [];
for (var i in data) {
temp.push(data[i].firstname.concat(" ", data[i].lastname));
}
return temp;
//accept firstname and lastname and return full name.
}

function grade(test1, test2, test3) {
var grade = [];
for (var i = 0; i < test1.length; i++) {
var total = (test1[i] + test2[i] + test3[i]) / 3;
if (total >= 90) {
grade.push("A");
} else if (total >= 70 && total < 90) {
grade.push("B");
} else if (total >= 50 && total < 70) {
grade.push("C");
} else if (total < 50) {
grade.push("D");
}
}
return grade;
// Calculate the average of the marks and find grade based on it.
// >= 90 : A
// >= 70 : B
// >= 50 : C
// < 50 : D
}
function remarks(grade) {
var remark = [];
for (var i in grade) {
if (grade[i] == "A") {
remark.push("Excellent");
} else if (grade[i] == "B") {
remark.push("Good");
} else if (grade[i] == "C") {
remark.push("Need improvement");
} else if (grade[i] == "D") {
remark.push("Take the test again");
}
}
return remark;
//Accept grade and return a remark based on the grade.
// A : Excellent
// B : Good
// C : Need improvement
// D : Take the test again
}
function start(studentData) {
// Display the given raw data in tabular format as shown in output in the first table(Student data)
// Hint : The id of the first table body is "data"(#data)
//Write the code to find null values in the data and delete the entire record if a null value is present
//Display the inference from the raw data in the second table(Inference) as shown in the output
// Columns:
// Fullname - use fullname()
// Age - use calcAge()
// Grade - use grade()
// Remarks - combine grade() and remarks()
//// Hint : The id of the second table body is "data" (#inference)
var fname = fullname();
var age = calcAge();
var test1 = [];
var test2 = [];
var test3 = [];
for (var i = 0; i < studentData.length; i++) {
test1.push(studentData[i].test1);
test2.push(studentData[i].test2);
test3.push(studentData[i].test3);
}
var grd = grade(test1, test2, test3);
var rm = remarks(grd);
for (var i in studentData) {
$('#data').append('<tr><td>' + studentData[i].firstname + '</td><td>' + studentData[i].lastname + '</td><td>' + studentData[i].dob + '</td><td>' + studentData[i].test1 + '</td><td>' + studentData[i].test2 + '</td><td>' +

studentData[i].test3 + '</td></tr>');
}
for (var i = 0; i < fname.length; i++) {
if (studentData[i].firstname != null && studentData[i].lastname != null && studentData[i].dob != null && studentData[i].test1 != null && studentData[i].test2 != null && studentData[i].test3 != null) {
$('#inference').append('<tr><td>' + fname[i] + '</td><td>' + age[i] + '</td><td>' + grd[i] + '</td><td>' + rm[i] + '</td></tr>');
}
}
}