My solutions to the extension problems (critique please!) and help on a function to check for empty strings on prompt()?

let message = ``;
let student;
let searchResponse;
let counter = 0;

//standard print function using getElementById
function print(message) {
  var outputDiv = document.getElementById('output');
  outputDiv.innerHTML = message;
}

//Seperates out the look and contents of the report/screen print out for modularity. Creates a variable (let) which does not exist outside of the function scope.
function getStudentReport(student) {
   let report = `<h2>Student: ${student['name']}</h2>
                  <p>Track: ${student['track']}</p>
                  <p>Points: ${student['points']}</p>
                  <p>Achievements: ${student['achievements']}'</p>`;
  return report;
}

/*Main logic block.
While (true) means that the loop continuously runs unless the break clause is triggered via typing quit or hitting cancel on the window.
if conditional has two clauses inside of it, to include the possibility that the user could exit the program by hitting cancel on the dialog box.
Hitting cancel returns a null value. It actually represents no value.Because it's not a string, we can't use the toLowerCase method on it. 
This checks to see if the value returned by the prompt method and stored in the search variable is null.*/
while (true) {
//reset both message and variable here to ensure alerts and screen prints function correctly.
  message = ``;
  counter = 0;
  searchResponse = prompt("To search the student records database, type a name into this box. If you want to exit the program, type 'quit'."); 
  if ( searchResponse === null || searchResponse.toLowerCase() === 'quit' ) {
    break; 
  }
  for (let i = 0; i < students.length; i += 1) {
    student = students[i];
    if (student.name.toLowerCase() === searchResponse.toLowerCase()) {
      //calls on the report function when assigning a value to the message variable.
      message += getStudentReport(student);
            //message is incremented with further callings of the function in case of multiple hits of the same name
      counter += 1;
            //value of counter incremented if one or more matches of the name are found.
            //If the value is zero, this indicates name isn't in the array, so the user is informed using the conditional statment below.
    }
  }
  if (counter === 0 ) {
    alert(`The name '${searchResponse}' was not found within the database. Please try another name, or to exit the program, type 'quit'`);
  }
//note the location outside of the for-loop to ensure that this message appears the appropriate number of times
//i.e. once for the entire array if the name isn't found within individual objects, rather than multiple times (even if the name is found within one)
  print(message);
}

//extension 1: message should be provided if a student is not found in the records.
// string validation
//extension 2: if there is more than one student with the same first name, then only the records of the person furthest down the array will be printed.
//How can we find and print all instances of that person sharing the same name to the screen when a search is conducted?

function searchResponseValidation(response) {
 while (searchResponse === '')
 alert(`No name was entered into the search box. Please type a name into the box to check it against the student database, or alternatively type 'quit' to exit the program.`);
  searchResponse = prompt("To search the student records database, type a name into this box. If you want to exit the program, type 'quit'."); 
}

while (true) {
  message = ``;
  counter = 0;
  searchResponse = prompt("To search the student records database, type a name into this box. If you want to exit the program, type 'quit'."); 
  searchResponseValidation(searchResponse);
  if ( searchResponse === null || searchResponse.toLowerCase() === 'quit' ) {
    break; 
  }
  for (let i = 0; i < students.length; i += 1) {
    student = students[i];
    if (student.name.toLowerCase() === searchResponse.toLowerCase()) {
      message += getStudentReport(student);
            //message is incremented with further callings of the function in case of multiple hits of the same name
      counter += 1;
    }
  }
  if (counter === 0 ) {
    alert(`The name '${searchResponse}' was not found within the database. Please try another name, or to exit the program, type 'quit'`);
  }
  print(message);
}