//define all the variables var maximumnum; var noofquestion = 10; var championtime; var goalminute; var goalsecond; var starttime; var endtime; var timetook; var questions; var quiz; var randomlist1; var randomlist2; var resultlist; var stoptimer = false; var str; var resultstring; var firstdigitofresult; var lastdigitofresult; var ansarr; var corans; //constructor function for every question function Question(text, choices, answer) { this.text = text; this.choices = choices; this.answer = answer; } Question.prototype.isCorrectAnswer = function(choice) { return this.answer === choice; } function Quiz(questions) { this.score = 0; this.questions = questions; this.questionIndex = 0; } Quiz.prototype.getQuestionIndex = function() { return this.questions[this.questionIndex]; } Quiz.prototype.guess = function(answer) { if (this.getQuestionIndex().isCorrectAnswer(answer)) { this.score++; } this.questionIndex++; } Quiz.prototype.isEnded = function() { return this.questionIndex === this.questions.length; } function populate() { if (quiz.questionIndex == 0) { starttime = performance.now(); } if (quiz.isEnded()) { endtime = performance.now(); timetook = endtime - starttime; timetook = Math.floor(timetook / 1000); showScores(timetook); stoptimer = true; } else { // show question var element = document.getElementById("question"); element.innerHTML = quiz.getQuestionIndex().text; // show options var choices = quiz.getQuestionIndex().choices; for (var i = 0; i < choices.length; i++) { var element = document.getElementById("choice" + i); element.innerHTML = choices[i]; guess("btn" + i, choices[i]); } showProgress(); } }; function guess(id, guess) { var button = document.getElementById(id); button.onclick = function() { quiz.guess(guess); populate(); } }; function showProgress() { var currentQuestionNumber = quiz.questionIndex + 1; var element = document.getElementById("progress"); element.innerHTML = "Question " + currentQuestionNumber + " of " + quiz.questions.length; }; function showScores(timetook) { var scorepercent = Math.floor((quiz.score / 10) * 100); var timepercent = Math.floor((20 / timetook) * 100); if (timepercent > 100) { timepercent = 100; }; var grosspercent = Math.floor((scorepercent + timepercent) / 2); var gameOverHTML = "

Result

"; gameOverHTML += "

Your score: " + quiz.score + "

"; gameOverHTML += "

Maximum Number: " + maximumnum + "

"; gameOverHTML += "

Time took: " + timetook + " secs" + "

"; gameOverHTML += "

Your Goal: " + championtime + " secs" + "

"; gameOverHTML += "

Gross Score: " + grosspercent + " %" + "

"; gameOverHTML += "

" + complement(grosspercent) + "

"; gameOverHTML += "" var element = document.getElementById("quiz"); originalhtml = element.innerHTML; element.innerHTML = gameOverHTML; }; function complement(grosspercent) { if (grosspercent < 50) { return "You seriously need more practise"; } else if (grosspercent >= 50 && grosspercent <= 80) { return "Good Job. Keep practising and reach your goal"; } else if (grosspercent > 80 && grosspercent <= 95) { return "You are very near to your goal keep going"; } else if (grosspercent > 95 && grosspercent < 100) { return "Even the sky is not the limit keep going"; } else if (grosspercent == 100) { return "Congrats you finally reached your goal"; } } function randomgen(min, max) { return Math.floor(Math.random() * (max - min) + min); } function generateRandomnumbers() { randomlist1 = []; randomlist2 = []; resultlist = []; for (var i = 0; i < noofquestion; i++) { randomlist1.push(randomgen(1, maximumnum + 1)); } for (var i = 0; i < noofquestion; i++) { randomlist2.push(randomgen(4, 10)); } for (var i = 0; i < noofquestion; i++) { resultlist.push(randomlist1[i] * randomlist2[i]); } } function generateQuestions() { questions = []; for (var i = 0; i < 10; i++) { str = randomlist1[i] + ' X ' + randomlist2[i]; resultstring = resultlist[i].toString(); lastdigitofresult = resultstring.slice(-1); firstdigitofresult = resultstring.slice(0, -1); ansarr = [ Number((Number(firstdigitofresult)-1).toString()+lastdigitofresult), Number((Number(firstdigitofresult)+2).toString()+lastdigitofresult), Number((Number(firstdigitofresult)+1).toString()+lastdigitofresult) , resultlist[i] ]; corans = resultlist[i]; questions.push(new Question(str, ansarr, corans)); } // questions = []; // // for (var i = 0; i < 10; i++) { // var str = randomlist1[i] + ' X ' + randomlist2[i]; // var ansarr = [ // (randomlist1[i] - 1) * randomlist2[i], // (randomlist2[i] - 1) * randomlist1[i], // (randomlist2[i] + 1) * (randomlist1[i]), // resultlist[i] // ]; // var corans = resultlist[i]; // questions.push(new Question(str, ansarr, corans)); // } } function shuffle(array) { var currentIndex = array.length, temporaryValue, randomIndex; // While there remain elements to shuffle... while (0 !== currentIndex) { // Pick a remaining element... randomIndex = Math.floor(Math.random() * currentIndex); currentIndex -= 1; // And swap it with the current element. temporaryValue = array[currentIndex]; array[currentIndex] = array[randomIndex]; array[randomIndex] = temporaryValue; } return array; } function restart(originalhtml, timetook) { var element = document.getElementById('quiz'); element.innerHTML = originalhtml; quiz.questionIndex = 0; quiz.score = 0; document.getElementById('timer').innerHTML = goalminute + ":" + goalsecond; stoptimer = false; generateRandomnumbers(); generateQuestions(); shuffle(questions); for (var i = 0; i < questions.length; i++) { shuffle(questions[i].choices); } quiz = new Quiz(questions); startTimer(); populate(); } function startTimer() { if (stoptimer == false) { var presentTime = document.getElementById('timer').innerHTML; var timeArray = presentTime.split(/[:]+/); var m = timeArray[0]; var s = checkSecond((timeArray[1] - 1)); if (s == 59) { m = m - 1 } //if(m<0){alert('timer completed')} document.getElementById('timer').innerHTML = m + ":" + s; setTimeout(startTimer, 1000); } } function checkSecond(sec) { if (sec < 10 && sec >= 0) { sec = "0" + sec }; // add zero in front of numbers < 10 if (sec < 0) { sec = "59" }; return sec; } // display quiz // var starttime = performance.now(); window.onload = function() { var start = document.getElementById('start'); start.onclick = function() { document.getElementsByClassName('intro')[0].style.display = "none"; document.getElementsByClassName('grid')[0].style.display = "block"; maximumnum = document.getElementById('maxnum').value; championtime = document.getElementById('goaltime').value; maximumnum /= 1; goalminute = Math.floor(championtime / 60); goalsecond = Math.floor(championtime % 60); generateRandomnumbers(); generateQuestions(); shuffle(questions); for (var i = 0; i < questions.length; i++) { shuffle(questions[i].choices); } document.getElementById('timer').innerHTML = goalminute + ":" + goalsecond; startTimer(); // create quiz quiz = new Quiz(questions); populate(); } }

Maths Practise{Challenge Yourself}