Random exam generator I've written a short Random Exam Generator program.
There are 6 days, 3 time slots per day. One day can not have more than 2 exams. There will be 5 exams in total.

I am fairly new to programming so I would like some feedback on how well this code is written, and if there are any ways to improve it.

var exam_days = 
    { 0: 0, 
      1: 0, 
      2: 0, 
      3: 0, 
      4: 0, 
      5: 0 };

var exam_array = []; 

function generateSchedule() {
  for (var i = 0; exam_array.length &lt; 5; i++){
    var time = getRandomInt(0,2);
    var day = getRandomInt(0,5);
    var exam_id = "exam-" + time + day; 
    if (dayAvailable(day, exam_days) &amp;&amp; uniqueExam(exam_id, exam_array)) {
      exam_days[day] += 1; 
      exam_array.push(exam_id); 
      document.getElementById(exam_id).style.background = "green"; 
    }
  }  
}

function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

function dayAvailable(date, exam_days) {

  if (exam_days[date] &lt; 2) {
      return true;
    }
  return false;   
}

function uniqueExam(exam, exam_array)
{
    var count = exam_array.length;
    for (var i = 0; i &lt; count; i++)
    {
        if (exam_array[i] === exam) 
          return false;
    }
    return true; 
}
Library functions usage

The unique_exam function is basically checking if the exam is in the array or not and returning false if it is not, the includes method is what You need.

return ! exam_array.includes(exam)

Inline

dayAvailable


Should be inlined as it boils down to just one comparison, instead the number of exams per day should be saved as a constant.