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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects The Student Record Search Challenge Solution

Lucia Brammer
Lucia Brammer
1,327 Points

Not doing the endless loop or displaying information. Please help :)

//functions & variables var student; var searchBar;

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

function getStudentReport(student) { var report = '<h2>Student: ' + student.name + '</h2>'; report += '<p>Track: ' + student.track + '</p>'; report += '<p>Points: ' + student.points + '</p>'; report += '<p>Achievements: ' + student.achievements + '</p>'; return report; };

// endless loop while (true) { searchBar = prompt("Please enter the name of a student"); if (searchBar === null ||searchBar.toUpperCase() === 'QUIT') { break; } for (var i = 0; i < students.length; i += 1); { student = students[i]; if (searchBar === student.name) { message = getStudentReport(student); print(message); }; }; };

2 Answers

You have a few semicolons after functions that shouldn't be there. I changed your code as follows:

var student; var searchBar; var message = ''

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

function getStudentReport(student) { var report = '<h2>Student: ' + student.name + '</h2>'; report += '<p>Track: ' + student.track + '</p>'; report += '<p>Points: ' + student.points + '</p>'; report += '<p>Achievements: ' + student.achievements + '</p>'; return report; }

// endless loop

 while (true) { searchBar = prompt("Please enter the name of a student");

 if (searchBar === null || searchBar.toUpperCase() === 'QUIT')
           { break; }
 for (var i = 0; i < students.length; i += 1)
 { student = students[i];
  if (searchBar === student.name) 
  { message = getStudentReport(student);
   print(message); }
 }
              }

but I think you may be experiencing what is described in the teacher's notes:

Important Update Since this video was shot, the behavior of most browsers has changed, so you won't see the same thing as I demonstrate in the video. In the video, you'll see that my script is able to print out to the browser using document.write( ) while inside a loop.

Most browsers no longer do that: they wait until the loop finishes and then they print to the window. So, you'll see a blank page until you type quit in the prompt window — then you'll see all the output printed to the screen.