// Define global variables and arrays var questionIndex = 0; var checker = true; var keeper = new Array(); var performance = new Array('No offense, but it could be better.','You need some real work.','Please do more exercises.','You need more practise.','You are getting better!','Your performance is adequate.','Your work is paying off now.','You are getting better and better.','You are excellent. Well done!'); var correctAnswers = 0; var jsAbility; var preventer = 1; var spawn; // For resetting all variables and arrays for a retake function itemReset() { questionIndex = 0; keeper = new Array(); correctAnswers = 0; preventer = 1; jsAbility = null; } // Administer the test and record the answers function startQuiz(openStatus, whetherOrNot) { checker = openStatus; if (whetherOrNot < questionIndex) { busted(); return; } if (checker) { spawn = open('','','width=600,height=400,scrollbars=yes'); !checker; } if (questionIndex == killers.length) { gradeTest(); return; } // Separate each array element to form the questions and answer options var question = killers[questionIndex].substring(0, killers[questionIndex].indexOf('$$')); var optionA = killers[questionIndex].substring(killers[questionIndex].indexOf('$$') + 2, killers[questionIndex].indexOf('%%')); var optionB = killers[questionIndex].substring(killers[questionIndex].indexOf('%%') + 2, killers[questionIndex].indexOf('^^')); var optionC = killers[questionIndex].substring(killers[questionIndex].indexOf('^^') + 2, killers[questionIndex].indexOf('&&')); var optionD = killers[questionIndex].substring(killers[questionIndex].indexOf('&&') + 2, killers[questionIndex].length); // Write the questons and answers options to the new window spawn.document.clear(); spawn.document.open(); spawn.document.writeln('JavaScript Mathematic Test'); spawn.document.writeln(''); spawn.document.writeln(''); spawn.document.writeln("

"); spawn.document.writeln("divider
"); spawn.document.writeln('

Question ' + (questionIndex + 1) + '

'); spawn.document.writeln('
'); spawn.document.writeln('' + question + '

'); spawn.document.writeln('' + optionA + '
'); spawn.document.writeln('' + optionB + '
'); spawn.document.writeln('' + optionC + '
'); spawn.document.writeln('' + optionD + '
'); spawn.document.writeln('
'); spawn.document.writeln(''); spawn.document.writeln(''); spawn.document.close(); // Increment variables for the next question questionIndex++; preventer++; } function gradeTest() { // Increment the variables for the last time questionIndex++; preventer++; // Compare student answers with correct answers for (var i = 0; i < killers.length; i++) { if (keeper[i] == answers[i]) { correctAnswers++; } } // Determine a ranking according to number of corrrect answers jsAbility = performance[Math.ceil((correctAnswers/killers.length) * performance.length - 1)]; // Print the test results printResults(); } // Print the questions, answer options, and other info function printResults() { spawn.document.clear(); spawn.document.open(); spawn.document.writeln(''); spawn.document.writeln('JavaScript Mathematic Test Results'); spawn.document.writeln(''); spawn.document.writeln('
'); spawn.document.writeln(''); spawn.document.writeln("

"); spawn.document.writeln("divider
"); spawn.document.writeln('

You scored ' + correctAnswers + '/' + killers.length + ' correctly.

'); spawn.document.writeln('Ranking: ' + jsAbility + '
'); spawn.document.writeln(''); spawn.document.writeln('

Here is how you scored:

'); for (var i = 0; i < killers.length; i++) { spawn.document.writeln('\n\nQuestion ' + (i + 1) + '
'); spawn.document.writeln(killers[i].substring(0, killers[i].indexOf('$$'))); spawn.document.writeln('

\na. ' + killers[i].substring((killers[i].indexOf('$$') + 2), killers[i].indexOf('%%')) + '
'); spawn.document.writeln('b. ' + killers[i].substring(killers[i].indexOf('%%') + 2, killers[i].indexOf('^^')) + '
'); spawn.document.writeln('c. ' + killers[i].substring(killers[i].indexOf('^^') + 2, killers[i].indexOf('&&')) + '
'); spawn.document.writeln('d. ' + killers[i].substring(killers[i].indexOf('&&') + 2, killers[i].length) + '
'); // Determine if the student answered each question appropriately, and display accordingly if (keeper[i] == answers[i]) { spawn.document.writeln('You answered this correctly.\n


'); } else { spawn.document.writeln('The correct answer is: ' + answers[i] + '\n


'); } } // Add extra info about the ranking, questions, and application spawn.document.writeln(''); spawn.document.writeln('\n\nYour Ranking

If you came out on top, congratulations! You have a good grasp of Mathematics. If not, don\'t worry. '); spawn.document.writeln('This test is a bit difficult. If it was not hard, doing well would not mean that much. You can always retake it. '); spawn.document.writeln(''); spawn.document.writeln('
'); spawn.document.writeln('\n\n'); spawn.document.close(); } function busted() { alert('Sorry, you only get one shot at each question.'); spawn.history.forward(); spawn.focus(); }