I did it!!! My solutions... Do you like them?

var input;
var student;
var studentName;
var message = '';
var noStudent = '';
var counter = 0; 
var i = 0;

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

while (true) {
    input = prompt('Type the name of student or type \"quit\" to cancel');
    counter = 0;
    i = 0; 
    if ( input.toUpperCase() === 'QUIT' || input === null ) {
        break;
        }
    while ( i < students.length ) {
        student = students[i];
        studentName = student.name;
        if ( input.toUpperCase() === studentName.toUpperCase() ){
            for ( var key in student ) {
                if ( key === 'name' ) {
                    message += '<h2>Student: ' + studentName + '</h2>';
                } else {
                message += '<p>'+ key + ': ' + student[key];
                }
            }

        } else {
            counter += 1;
            if ( counter === students.length ) {
                message += '<h2>No student with the name ' + input + '</h2>';
            }
        }

        print(message);
        i += 1;
    }
}