My Extra Credit Solution

Question

var reply;
var counter = 0;
var obj;
function print(message) {
  var outputDiv = document.getElementById('output');
  outputDiv.innerHTML = message;
}


do{
  reply = prompt("Please enter a name");
  if(reply === null || reply === ''){
  break;
  }
  for(var i = 0; i < students.length; i++){
    if(students[i].name === reply){
      counter+= 1;
      if(counter === 2){
        message += "<br><h3>Name: " + students[i].name + "</h3>";
      }
      else {
      message = "<h3>Name: " + students[i].name + "</h3>";
      }
      message += "<h3>Track: " + students[i].track + "</h3>";
      message += "<h3>Achievements: " + students[i].achievements + "</h3>";
      message += "<h3>Points: " + students[i].points + "</h3>";
      print(message);
    }
  }

  counter = 0;
      }while(reply !== 'quit')

Answer 1 · 2019-09-20T05:06:30Z

September 20, 2019 5:06am

I see that you are checking for two students with identical first names. What if there are more than 2? Also, Dave was asking what if a student name was entered that was not in the list of students - he wanted a message sent to the screen alerting the user of this.

I liked the way you used the counter. I added it to my code as you can see below.

var message = ''; var search; var student; // Holds one object at a time. var studentLower; // Holds lowercase student name. var found; // Will use to report that name does not exist. var counter = 0; // Will use to tally duplicate student names.

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

while ( true ) { // CREATED AN ENDLESS LOOP HERE found = false; // Set found flag here for the "Sorry message" below.

search = prompt("Type the student's first name to find info and 'quit' to exit.");

if ( search === null || search.toLowerCase() === "quit" ) { break; // Null would happen if the user clicked on the prompt's cancel button.

} else { // Let's find the object in the array with the correct name.

for (var i = 0; i < students.length; i += 1) {
  student = students[i];    //  Looking into each of the objects.
  studentLower = student.name;  //  Loads the .name field into our variable
                                //    then we actually confert it to lowercase next.
  if ( search.toLowerCase() === studentLower.toLowerCase() ) {     // If found then
                                                                   // print out data.
    found = true;         //   Flag changed here to not run the "Sorry message" below.
    counter += 1;         //   Gets incramented each time a match is found.
    if ( counter > 1 ) {
      message += "<h2>Student: " + student.name + "</h2>";  //  If this is a duplicate.
    } else {
      message = "<h2>Student: " + student.name + "</h2>";  //  First time name found.
    }

    message += "<p>Track: " + student.track + "</p>";
    message += "<p>Points: " + student.points + "</p>";
    message += "<p>Achievements: " + student.achievements + "</p>";  
    print( message );

  }      //  End of If
}      //  End of for loop
counter = 0;                    //  Resetting
message = '';                   //  Resetting

} // end of else if ( found === false ) { message += "<h2>Sorry, " + search + " is not in this database. Are you sure that you capitalized the first and only the first letter of the name?</h2>"; print( message ); }
} // End of while loop

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cristiancorrales

cristiancorrales

My Extra Credit Solution

1 Answer

Michael Murray

Michael Murray