mirror of
https://github.com/andre-wojtowicz/elearning-scorm-exam-template.git
synced 2024-08-24 09:46:56 +02:00
204 lines
5.8 KiB
JavaScript
204 lines
5.8 KiB
JavaScript
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Array.prototype.equals = function (array)
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{
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if (!array)
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return false;
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if (this.length != array.length)
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return false;
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for (var i = 0, l=this.length; i < l; i++)
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{
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if (this[i] instanceof Array && array[i] instanceof Array)
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{
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if (!this[i].equals(array[i]))
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return false;
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}
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else if (this[i] != array[i])
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{
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return false;
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}
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}
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return true;
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}
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var alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".split("");
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function getCheckedValues(questionNumber)
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{
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var vals = [];
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for (var y=0; y<alphabet.length; y++)
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{
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var element = document.getElementById(questionNumber + "-" + alphabet[y]);
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if (!element)
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return vals;
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if (element.checked)
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vals.push(alphabet[y]);
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}
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}
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var startTimeStamp = new Date();
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//SCORM requires time to be formatted in a specific way
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function ConvertMilliSecondsToSCORMTime(intTotalMilliseconds, blnIncludeFraction){
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var intHours;
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var intintMinutes;
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var intSeconds;
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var intMilliseconds;
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var intHundredths;
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var strCMITimeSpan;
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if (blnIncludeFraction == null || blnIncludeFraction == undefined){
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blnIncludeFraction = true;
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}
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//extract time parts
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intMilliseconds = intTotalMilliseconds % 1000;
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intSeconds = ((intTotalMilliseconds - intMilliseconds) / 1000) % 60;
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intMinutes = ((intTotalMilliseconds - intMilliseconds - (intSeconds * 1000)) / 60000) % 60;
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intHours = (intTotalMilliseconds - intMilliseconds - (intSeconds * 1000) - (intMinutes * 60000)) / 3600000;
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/*
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deal with exceptional case when content used a huge amount of time and interpreted CMITimstamp
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to allow a number of intMinutes and seconds greater than 60 i.e. 9999:99:99.99 instead of 9999:60:60:99
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note - this case is permissable under SCORM, but will be exceptionally rare
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*/
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if (intHours == 10000)
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{
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intHours = 9999;
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intMinutes = (intTotalMilliseconds - (intHours * 3600000)) / 60000;
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if (intMinutes == 100)
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{
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intMinutes = 99;
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}
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intMinutes = Math.floor(intMinutes);
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intSeconds = (intTotalMilliseconds - (intHours * 3600000) - (intMinutes * 60000)) / 1000;
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if (intSeconds == 100)
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{
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intSeconds = 99;
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}
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intSeconds = Math.floor(intSeconds);
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intMilliseconds = (intTotalMilliseconds - (intHours * 3600000) - (intMinutes * 60000) - (intSeconds * 1000));
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}
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//drop the extra precision from the milliseconds
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intHundredths = Math.floor(intMilliseconds / 10);
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//put in padding 0's and concatinate to get the proper format
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strCMITimeSpan = ZeroPad(intHours, 4) + ":" + ZeroPad(intMinutes, 2) + ":" + ZeroPad(intSeconds, 2);
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if (blnIncludeFraction){
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strCMITimeSpan += "." + intHundredths;
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}
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//check for case where total milliseconds is greater than max supported by strCMITimeSpan
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if (intHours > 9999)
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{
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strCMITimeSpan = "9999:99:99";
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if (blnIncludeFraction){
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strCMITimeSpan += ".99";
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}
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}
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return strCMITimeSpan;
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}
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function ZeroPad(intNum, intNumDigits){
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var strTemp;
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var intLen;
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var i;
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strTemp = new String(intNum);
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intLen = strTemp.length;
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if (intLen > intNumDigits){
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strTemp = strTemp.substr(0,intNumDigits);
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}
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else{
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for (i=intLen; i<intNumDigits; i++){
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strTemp = "0" + strTemp;
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}
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}
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return strTemp;
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}
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function getScoreAndSaveAnswers()
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{
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var score = 0;
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for (var i=1; i<=tot; i++)
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{
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checkedValues = getCheckedValues(i);
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var correctAnswer = checkedValues.equals(answers[i-1]);
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var result = (correctAnswer ? "correct" : "wrong");
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if (correctAnswer)
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{
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score += 1;
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document.getElementById("question-"+i).className = "bg-success";
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document.getElementById("result-"+i).className = "text-success glyphicon glyphicon-ok";
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}
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else
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{
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document.getElementById("question-"+i).className = "bg-danger";
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document.getElementById("result-"+i).className = "text-danger glyphicon glyphicon-remove";
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}
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ScormSaveAnswer(i, "choice",
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checkedValues.toString().toLowerCase(),
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answers[i-1].toString().toLowerCase(),
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result);
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}
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return score;
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}
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function returnScore()
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{
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var score = getScoreAndSaveAnswers();
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var endTimeStamp = new Date();
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var sessionTime = ConvertMilliSecondsToSCORMTime(endTimeStamp - startTimeStamp, false);
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ScormSaveScore(score, tot, sessionTime);
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ScormCommitChanges();
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ScormProcessTerminate();
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window.onunload = null;
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window.onbeforeunload = null;
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document.getElementById("result-score").innerHTML = score + " / " + tot;
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document.getElementById("progress-ok").style.width = ((score/tot)*100).toFixed(2) + "%";
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document.getElementById("progress-wrong").style.width = (((tot-score)/tot)*100).toFixed(2) + "%";
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document.getElementById("result-msg").hidden = false;
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document.getElementById("result-msg").style.display = "inline";
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document.getElementById("form-control").removeChild(document.getElementById("check-button"))
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document.body.style.pointerEvents = "none";
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}
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function CheckExam()
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{
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if (ScormLessonPassed())
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{
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ScormProcessTerminate();
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returnScore = function(){};
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getScoreAndSaveAnswers = function(){};
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answers = null;
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window.onunload = null;
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window.onbeforeunload = null;
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$.toaster("Exam already passed.", 'Info', 'info');
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document.getElementById("form-control").removeChild(document.getElementById("check-button"))
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document.body.style.pointerEvents = "none";
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}
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}
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