chemicaltools/src/functions/exam.js

Chemical Tools for Chemistry students.

var elementinfomodule = require("../info/elementinfo");
var search = elementinfomodule.search;
var elementinfo = elementinfomodule.elementinfo;
var correctanswer = function(
  question,
  answer,
  questiontype = "name",
  answertype = "iupac"
) {
  var info = search(questiontype, question);
  var correct_answer = info[answertype];
  return {
    correct: correct_answer == answer,
    question: question,
    correct_answer: correct_answer,
    answer: answer
  };
};
var makequestion = function(
  questiontype = "name",
  answertype = "iupac",
  max = 86
) {
  var numbers = Array.from(Array(max).keys())
    .sort(() => Math.random() - 0.5)
    .slice(0, 4);
  var question = elementinfo[numbers[0]][questiontype];
  numbers.sort();
  var options = new Array(4);
  for (var i2 = 0; i2 < 4; i2++) {
    options[i2] = elementinfo[numbers[i2]][answertype];
  }
  return { question: question, options: options };
};
exports.makequestion = makequestion;
exports.correctanswer = correctanswer;