My solution to the last things he says in the video

//Declaring the variables and functions at the beginning
var student;
var quit = true;
var search = '';
function print(message) {
  var outputDiv = document.getElementById('output');
  outputDiv.innerHTML = message;
}
//The main, useful function I made to iterate 
//through the array and its objects. 
function query (students, search) {

/*declaring the variable in the function
but before the for loop makes it so that
it is blank when you search for another name
but doesn't erase if there are multiple people
with the same name, like in what he said towards 
the end of the video.. Funny enough I got that 
part right by coincidence. 
*/

  var message = '';
  for (var i = 0; i < students.length; i += 1) {
    student = students[i];
    if (search.toUpperCase() === student.name.toUpperCase()) {
      message += '<h2>Student: ' + student.name + '</h2>';
      message += '<p>Track: ' + student.track + '</p>';
      message += '<p>Points: ' + student.points + '</p>';
      message += '<p>Achievements: ' + student.achievements + '</p>';
    }
  }
  //If message is blank then it means no student
  //was found, so this informs the user of that.
  if (message === '' && search !== null && search.toUpperCase() !== 'QUIT') {
    message = "Sorry, no student by that name was found.";
  }
  return message
}



/*The do while loop just performs the 
  search prompt while making sure to have a 
  way to exit the loop and also prints the results of the search. 
*/



do {
  search = prompt("What is the student's name?");
  if ( search === null || search.toUpperCase() === 'QUIT') {
    quit = false;  
  }
  print(query(students, search));  
} while ( quit === true );