Exercise Solutions: Modules

Export Finished Modules

  1. In averages.js, add code to export all of the functions within an object.

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    module.exports = {
   averageForStudent: averageForStudent,
   averageForTest: averageForTest
};

Code and Export a New Module

  1. Add code to complete the randomFromArray function. It should take an array as an argument and then return a randomly selected element from that array.

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    function randomFromArray(arr){
   let index = Math.floor(Math.random()*arr.length);
   return arr[index];
}

Import Required Modules

  1. Assign readline-sync to the input variable.

    const input = require('readline-sync');

  1. Assign the printAll function from display.js to the printAll variable.

    const printAll = require('./display.js');

Finish the Project

  1. Line 21 - Call printAll to display all of the tests and student scores. Be sure to pass in the correct arguments.

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    printAll(astronauts, testTitles, scores);

  1. Line 29 - Call averageForStudent (with the proper arguments) to print each astronaut's average score.

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    let avg = averages.averageForStudent(j, scores);