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

Raul Cisneros
Raul Cisneros
7,319 Points
Posted by Raul Cisneros
Raul Cisneros
7,319 Points

Lots of DRY code but it works and has the fix for incorrect name entry and blank entry.

var student = [
  {name: "Susan", track: "Web Design", achievements: 2, points: 25},
  {name: "Melissa", track: "Full Stack Dev", achievements: 3, points: 50},
  {name: "Sarah", track: "Front End Dev", achievements: 4, points: 75},
  {name: "Jennifer", track: "IOS",achievements: 5, points: 100},
  {name: "Alexia", track: "Python", achievements: 6, points: 125}
];

function print(x) {
  document.getElementById('output').innerHTML = x;
}

while (true) {
  var userInput = prompt("Enter student name. Type 'quit' to exit");
  userInput = userInput.toLowerCase();
  if (userInput === "quit") {
    break;
  } else if (userInput === "susan") {
    susan();
  } else if (userInput === "melissa") {
    melissa();
  } else if (userInput === "jennifer") {
    jennifer();
  } else if (userInput === "sarah") {
    sarah();
  } else if (userInput === "alexia") {
    alexia();
  } else if (userInput === "") {
    alert("Please try again");
  } else if (userInput !== "susan", "alexia", "melissa", "jennifer", "sarah", "quit") {
    alert("No records by that name.")
  }
}

function susan() {
  for (var i = 0; i = 5; i++) {
  var message = '';
      message = message + '<h3>' + 'Student name: ' + student[0].name + '</h3>';
      message = message + '<p>' + 'Track: ' + student[0].track + '</p>';
      message = message + '<p>' + 'Acheivments: ' + student[0].achievements + '</p>';
      message = message + '<p>' + 'Points: ' + student[0].points + '</p>';
  print(message);
  break;
  }
}

function melissa() {
  for (var i = 0; i = 5; i++) {
  var message = '';
      message = message + '<h3>' + 'Student name: ' + student[1].name + '</h3>';
      message = message + '<p>' + 'Track: ' + student[1].track + '</p>';
      message = message + '<p>' + 'Acheivments: ' + student[1].achievements + '</p>';
      message = message + '<p>' + 'Points: ' + student[1].points + '</p>';
  print(message);
  break;
  }
}

function sarah() {
  for (var i = 0; i = 5; i++) {
  var message = '';
      message = message + '<h3>' + 'Student name: ' + student[2].name + '</h3>';
      message = message + '<p>' + 'Track: ' + student[2].track + '</p>';
      message = message + '<p>' + 'Acheivments: ' + student[2].achievements + '</p>';
      message = message + '<p>' + 'Points: ' + student[2].points + '</p>';
  print(message);
  break;
  }
}

function jennifer() {
  for (var i = 0; i = 5; i++) {
  var message = '';
      message = message + '<h3>' + 'Student name: ' + student[3].name + '</h3>';
      message = message + '<p>' + 'Track: ' + student[3].track + '</p>';
      message = message + '<p>' + 'Acheivments: ' + student[3].achievements + '</p>';
      message = message + '<p>' + 'Points: ' + student[3].points + '</p>';
  print(message);
  break;
  }
}

function alexia() {
  for (var i = 0; i = 5; i++) {
  var message = '';
      message = message + '<h3>' + 'Student name: ' + student[4].name + '</h3>';
      message = message + '<p>' + 'Track: ' + student[4].track + '</p>';
      message = message + '<p>' + 'Acheivments: ' + student[4].achievements + '</p>';
      message = message + '<p>' + 'Points: ' + student[4].points + '</p>';
  print(message);
  break;
  }
}
Raul Cisneros
Raul Cisneros
7,319 Points
Raul Cisneros
Raul Cisneros
7,319 Points

After watching the solution video it really makes me feel like I don't know anything. I know my solution is not the best way to code, but it does work and with time I am hoping that I can code something similar to the instructors solution. I figure that if I cant figure it out in a couple days, its time to move on.

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

You could make this code a bit more "DRY" and about half the size by combining the similar functions a single one that takes a parameter (and it also does not need a loop).

For example:

function showStudent(number) {
  var message = '<h3>Student name: ' + student[number].name + '</h3>';
  message += '<p>Track: ' + student[number].track + '</p>';
  message += '<p>Acheivments: ' + student[number].achievements + '</p>';
  message += '<p>Points: ' + student[number].points + '</p>';
  print(message);
}

Then, instead of calling the different named functions, call the single one and pass the student number:

  } else if (userInput === "susan") {
    showStudent(0);
  } else if (userInput === "melissa") {
    showStudent(1);
  // etc...