console.log("Welcome to Pranavi's Javascript");
function logItType(output) {
console.log(typeof output, ";", output);
}
// define a function to hold data for a Person
function Person(name, grade, role) {
this.name = name;
this.grade = grade;
this.role = role;
}
// define a JSON conversion "method" associated with Person
Person.prototype.toJSON = function() {
const obj = {name: this.name, grade: this.grade, role: this.role};
const json = JSON.stringify(obj); // json/string is useful when passing data on internet
return json;
}
// make a new Person and assign to variable teacher
var teacher = new Person("Mr M", "NA", "Teacher"); // object type is easy to work with in JavaScript
// define a student Array of Person(s)
var students = [
new Person("Pranavi", "Senior", "Student"),
new Person("Madhumita", "Senior", "Student"),
new Person("John", "Sophomor", "Student"),
new Person("Shraddha", "Senior", "Student"),
new Person("Meena", "Senior", "Student"),
new Person("Bob", "Junior", "Student"),
];
// define a classroom and build Classroom objects and json
function Classroom(teacher, students){ // 1 teacher, many student
this.teacher = teacher;
this.classroom = [teacher];
// add each Student to Classroom
this.students = students;
this.students.forEach(student => { this.classroom.push(student); });
// build json/string format of Classroom
this.json = [];
this.classroom.forEach(person => this.json.push(person.toJSON()));
}
// make a CompSci classroom from formerly defined teacher and students
scrumTeam = new Classroom(teacher, students);
// define an HTML conversion "method" associated with Classroom
Classroom.prototype._toHtml = function() {
// HTML Style is build using inline structure
var style = (
"display:inline-block;" +
"border: 2px solid grey;" +
"box-shadow: 0.8em 0.4em 0.4em grey;"
);
// HTML Body of Table is build as a series of concatenations (+=)
var body = "";
// Heading for Array Columns
body += "<tr>";
body += "<th><mark>" + "Name" + "</mark></th>";
body += "<th><mark>" + "Grade" + "</mark></th>";
body += "<th><mark>" + "Role" + "</mark></th>";
body += "</tr>";
// Data of Array, iterate through each row of scrumTeam.classroom
for (var row in scrumTeam.classroom) {
// tr for each row, a new line
body += "<tr>";
// td for each column of data
body += "<td>" + scrumTeam.classroom[row].name + "</td>";
body += "<td>" + scrumTeam.classroom[row].grade + "</td>";
body += "<td>" + scrumTeam.classroom[row].role + "</td>";
// tr to end line
body += "<tr>";
}
// Build and HTML fragment of div, table, table body
return (
"<div style='" + style + "'>" +
"<table>" +
body +
"</table>" +
"</div>"
);
};
// IJavaScript HTML processor receive parameter of defined HTML fragment
$$.html(scrumTeam._toHtml());
