@ -6,11 +6,13 @@
* @ author Yannick Warnier - inspired by the ADLNet documentation on SCORM content - side API
* @ package scorm . js
* /
/ * *
* Initialisation of the SCORM API section .
* Find the SCO functions ( startTimer , computeTime , etc in the second section )
* Find the Chamilo - proper functions ( checkAnswers , etc in the third section )
* /
var _debug = true ;
var findAPITries = 0 ;
var _apiHandle = null ; //private variable
@ -27,6 +29,8 @@ var _InvalidSetValue = 402;
var _ElementIsReadOnly = 403 ;
var _ElementIsWriteOnly = 404 ;
var _IncorrectDataType = 405 ;
var startTime ;
var exitPageStatus ;
/ * *
* Gets the API handle right into the local API object and ensure there is only one .
@ -78,11 +82,12 @@ function getAPI()
}
return MyAPI ;
}
/ * *
* Handles error codes ( prints the error if it has a description )
* @ return int Error code from LMS ' s API
* /
function E rrorHandler( )
function e rrorHandler( )
{
if ( API == null ) {
alert ( "Unable to locate the LMS's API. Cannot determine LMS error code" ) ;
@ -96,19 +101,31 @@ function ErrorHandler()
errDescription += "\n" ;
errDescription += api . LMSGetDiagnostic ( null ) ;
}
console . lo g( errDescription ) ;
addDebu g( errDescription ) ;
} else {
var errDescription = API . LMSGetErrorString ( errCode ) ;
if ( _debug ) {
errDescription += "\n" ;
errDescription += api . LMSGetDiagnostic ( null ) ;
}
console . lo g( errDescription ) ;
addDebu g( errDescription ) ;
}
}
return errCode ;
}
function addDebug ( message ) {
if ( _debug && window . console ) {
console . log ( message ) ;
}
}
function addDebugTable ( message ) {
if ( _debug && window . console ) {
console . table ( message ) ;
}
}
/ * *
* Calls the LMSInitialize method of the LMS ' s API object
* @ return string The string value of the LMS returned value or false if error ( should be "true" otherwise )
@ -119,9 +136,10 @@ function doLMSInitialize()
alert ( errMsgLocate + "\nLMSInitialize failed" ) ;
return false ;
}
var result = API . LMSInitialize ( "" ) ;
if ( result . toString ( ) != "true" ) {
var err = E rrorHandler( ) ;
var err = e rrorHandler( ) ;
}
return result . toString ( ) ;
}
@ -138,7 +156,7 @@ function doLMSFinish()
} else {
var result = API . LMSFinish ( '' ) ;
if ( result . toString ( ) != "true" ) {
var err = E rrorHandler( ) ;
var err = e rrorHandler( ) ;
}
}
return result . toString ( ) ;
@ -152,16 +170,18 @@ function doLMSGetValue(name)
{
if ( API == null ) {
alert ( errMsgLocate + "\nLMSGetValue was not successful." ) ;
return "" ;
return '' ;
} else {
var value = API . LMSGetValue ( name ) ;
var errCode = API . LMSGetLastError ( ) . toString ( ) ;
if ( errCode != _NoError ) {
// an error was encountered so display the error description
var errDescription = API . LMSGetErrorString ( errCode ) ;
alert ( "LMSGetValue(" + name + ") failed. \n" + errDescription ) ;
return "" ;
addDebug ( "LMSGetValue(" + name + ") failed. \n" + errDescription )
return '' ;
}
return value . toString ( ) ;
}
}
@ -179,7 +199,7 @@ function doLMSSetValue(name, value)
} else {
var result = API . LMSSetValue ( name , value ) ;
if ( result . toString ( ) != "true" ) {
var err = E rrorHandler( ) ;
var err = e rrorHandler( ) ;
}
}
return ;
@ -196,7 +216,7 @@ function doLMSCommit()
} else {
var result = API . LMSCommit ( "" ) ;
if ( result != "true" ) {
var err = E rrorHandler( ) ;
var err = e rrorHandler( ) ;
}
}
return result . toString ( ) ;
@ -224,7 +244,7 @@ function doLMSGetErrorString(errorCode)
alert ( errMsgLocate + "\nLMSGetErrorString was not successful." ) ;
}
return API . LMSGetErrorString ( errorCode ) . toString ( ) ;
return API . LMSGetErrorString ( errorCode ) . toString ( ) ;
}
/ * *
@ -236,15 +256,9 @@ function doLMSGetDiagnostic(errorCode)
alert ( errMsgLocate + "\nLMSGetDiagnostic was not successful." ) ;
}
return API . LMSGetDiagnostic ( errorCode ) . toString ( ) ;
return API . LMSGetDiagnostic ( errorCode ) . toString ( ) ;
}
/ * *
* Second section . The SCO functions are located here ( handle time and score messaging to SCORM API )
* Initialisation
* /
var startTime ;
var exitPageStatus ;
/ * *
* Initialise page values
* /
@ -379,18 +393,10 @@ function unloadPage(status)
{
if ( ! exitPageStatus )
{
// doQuit( status );
// doQuit( status );
}
}
/ * *
* Third section - depending on Chamilo - check answers and set score
* /
var questions = new Array ( ) ;
var questions _answers = new Array ( ) ;
var questions _answers _correct = new Array ( ) ;
var questions _types = new Array ( ) ;
var questions _score _max = new Array ( ) ;
var questions _answers _ponderation = new Array ( ) ;
/ * *
* Checks the answers on the test formular page
* /
@ -400,13 +406,10 @@ function checkAnswers(interrupted)
var status = 'not attempted' ;
var scoreMax = 0 ;
if ( _debug ) {
console . log ( 'questions_answers_correct:' ) ;
console . log ( questions _answers _correct ) ;
}
addDebug ( 'Number of questions: ' + questions . length ) ;
for ( var i = 0 ; i < questions . length ; i ++ ) {
if ( questions [ i ] != undefined && questions [ i ] != null ) {
if ( questions [ i ] != undefined && questions [ i ] != null ) {
var idQuestion = questions [ i ] ;
var type = questions _types [ idQuestion ] ;
var interactionScore = 0 ;
@ -414,69 +417,45 @@ function checkAnswers(interrupted)
var interactionCorrectResponses = '' ;
var interactionType = '' ;
if ( _debug ) {
console . log ( 'Type: ' + type ) ;
console . log ( 'idQuestion: ' + idQuestion ) ;
console . log ( 'questions_answers: ' ) ;
console . log ( questions _answers [ idQuestion ] ) ;
console . log ( 'questions_answers_ponderation: ' ) ;
console . log ( questions _answers _ponderation [ idQuestion ] ) ;
console . log ( 'questions_answers_correct: ' ) ;
console . log ( questions _answers _correct [ idQuestion ] ) ;
}
if ( type == 'mcma' ) {
interactionType = 'choice' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_multiple_' + ( idAnswer ) ) ;
if ( answer . checked ) {
interactionAnswers += idAnswer + '__|' ; // changed by isaac flores
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
}
}
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
if ( _debug ) {
console . log ( "Score: " + myScore ) ;
}
} else if ( type == 'mcua' ) {
interactionType = 'choice' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_unique_' + ( idAnswer ) ) ;
if ( answer . checked ) {
interactionAnswers += idAnswer ;
if ( _debug ) {
console . log ( "idAnswer: " + idAnswer ) ;
console . log ( "questions_answers_correct: " + questions _answers _correct [ idQuestion ] [ idAnswer ] ) ;
}
if ( questions _answers _correct [ idQuestion ] [ idAnswer ] == idAnswer ) {
if ( questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) {
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
} else {
myScore ++ ;
}
addDebug ( 'idQuestion: ' + idQuestion + ', Type: ' + type ) ;
addDebug ( 'questions_answers: ' ) ;
addDebugTable ( questions _answers [ idQuestion ] ) ;
addDebug ( 'questions_answers_ponderation: ' ) ;
addDebugTable ( questions _answers _ponderation [ idQuestion ] ) ;
addDebug ( 'questions_answers_correct: ' ) ;
addDebugTable ( questions _answers _correct [ idQuestion ] ) ;
switch ( type ) {
case 'mcma' :
interactionType = 'choice' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_multiple_' + ( idAnswer ) ) ;
if ( answer . checked ) {
interactionAnswers += idAnswer + '__|' ; // changed by isaac flores
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
}
}
}
if ( _debug ) {
console . log ( "Score: " + myScore ) ;
}
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
} else if ( type == 'tf' ) {
interactionType = 'true-false' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + idQuestion + '_tf_' + ( idAnswer ) ) ;
if ( answer . checked . value ) {
interactionAnswers += idAnswer ;
for ( k = 0 ; k < questions _answers _correct [ idQuestion ] . length ; k ++ ) {
if ( questions _answers _correct [ idQuestion ] [ k ] == idAnswer ) {
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
addDebug ( "Score: " + myScore ) ;
break ;
case 'mcua' :
interactionType = 'choice' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var elementId = 'question_' + ( idQuestion ) + '_unique_' + ( idAnswer ) ;
var answer = document . getElementById ( elementId ) ;
if ( answer . checked ) {
addDebug ( 'Element id # "' + elementId + '" was checked' ) ;
interactionAnswers += idAnswer ;
addDebug ( "List of correct answers: " + questions _answers _correct [ idQuestion ] ) ;
addDebug ( 'Score for this answer: ' + questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) ;
addDebug ( "idAnswer: " + idAnswer ) ;
addDebug ( "Option selected: " + questions _answers _correct [ idQuestion ] [ idAnswer ] ) ;
if ( questions _answers _correct [ idQuestion ] [ idAnswer ] == 1 ) {
if ( questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) {
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
} else {
@ -485,132 +464,166 @@ function checkAnswers(interrupted)
}
}
}
}
if ( _debug ) {
console . log ( "Score: " + myScore ) ;
}
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
} else if ( type == 'fib' ) {
interactionType = 'fill-in' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_fib_' + ( idAnswer ) ) ;
if ( answer . value ) {
interactionAnswers += answer . value + '__|' ; //changed by isaac flores
for ( k = 0 ; k < questions _answers _correct [ idQuestion ] . length ; k ++ ) {
if ( questions _answers _correct [ idQuestion ] [ k ] == answer . value ) {
if ( questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) {
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
} else {
myScore ++ ;
addDebug ( "Score: " + myScore ) ;
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
break ;
case 'tf' :
interactionType = 'true-false' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + idQuestion + '_tf_' + ( idAnswer ) ) ;
if ( answer . checked . value ) {
interactionAnswers += idAnswer ;
for ( k = 0 ; k < questions _answers _correct [ idQuestion ] . length ; k ++ ) {
if ( questions _answers _correct [ idQuestion ] [ k ] == idAnswer ) {
if ( questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) {
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
} else {
myScore ++ ;
}
}
}
}
}
}
if ( _debug ) {
console . log ( "Score: " + myScore ) ;
}
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
} else if ( type == 'matching' ) {
interactionType = 'matching' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_matching_' + ( idAnswer ) ) ;
if ( answer && answer . value ) {
interactionAnswers += answer . value + '__|' ; //changed by isaac flores
for ( k = 0 ; k < questions _answers _correct [ idQuestion ] . length ; k ++ ) {
var left = questions _answers _correct [ idQuestion ] [ k ] [ 0 ] ;
var right = questions _answers _correct [ idQuestion ] [ k ] [ 1 ] ;
if ( left == idAnswer && right == answer . value ) {
if ( questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) {
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
} else {
myScore ++ ;
addDebug ( "Score: " + myScore ) ;
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
break ;
case 'fib' :
interactionType = 'fill-in' ;
var myScore = 0 ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_fib_' + ( idAnswer ) ) ;
if ( answer . value ) {
interactionAnswers += answer . value + '__|' ; //changed by isaac flores
for ( k = 0 ; k < questions _answers _correct [ idQuestion ] . length ; k ++ ) {
if ( questions _answers _correct [ idQuestion ] [ k ] == answer . value ) {
if ( questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) {
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
} else {
myScore ++ ;
}
}
}
}
}
}
if ( _debug ) {
console . log ( "Score: " + myScore ) ;
}
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
} else if ( type == 'free' ) {
//ignore for now as a score cannot be given
interactionType = 'free' ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_free' ) ;
if ( answer && answer . value ) {
interactionAnswers += answer . value
}
//interactionScore = questions_score_max[idQuestion];
interactionScore = 0 ;
scoreMax += questions _score _max [ idQuestion ] ;
//interactionAnswers = document.getElementById('question_'+(idQuestion)+'_free').value;
//correct responses work by pattern, see SCORM Runtime Env Doc
//interactionCorrectResponses += questions_answers_correct[idQuestion].toString();
} else if ( type == 'hotspot' ) {
interactionType = 'sequencing' ;
interactionScore = 0 ;
//if(question_score && question_score[idQuestion]){
// interactionScore = question_score[idQuestion];
//} //else, 0
//interactionAnswers = document.getElementById('question_'+(idQuestion)+'_free').innerHTML;
//correct responses work by pattern, see SCORM Runtime Env Doc
//for(k=0;k<questions_answers_correct[idQuestion].length;k++)
//{
// interactionCorrectResponses += questions_answers_correct[idQuestion][k].toString()+',';
//}
} else if ( type == 'exact' ) {
interactionType = 'exact' ;
interactionScore = 0 ;
var real _answers = new Array ( ) ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_exact_' + ( idAnswer ) ) ;
if ( answer . checked == true ) {
interactionAnswers += idAnswer + ', ' ;
if ( questions _answers _correct [ idQuestion ] [ idAnswer ] != 0 ) {
real _answers [ j ] = true ;
} else {
real _answers [ j ] = false ;
addDebug ( "Score: " + myScore ) ;
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
break ;
case 'matching' :
interactionType = 'matching' ;
var myScore = 0 ;
addDebug ( "List of correct answers: " ) ;
console . log ( questions _answers _correct [ idQuestion ] ) ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var elementId = 'question_' + ( idQuestion ) + '_matching_' + ( idAnswer ) ;
addDebug ( "---------idAnswer #" + idAnswer + '------------------' ) ;
addDebug ( "Checking element #" + elementId ) ;
var answer = document . getElementById ( elementId ) ;
if ( answer && answer . value ) {
interactionAnswers += answer . value + '__|' ; //changed by isaac flores
for ( k = 0 ; k < questions _answers _correct [ idQuestion ] . length ; k ++ ) {
var left = questions _answers _correct [ idQuestion ] [ k ] [ 0 ] ;
var right = questions _answers _correct [ idQuestion ] [ k ] [ 1 ] ;
addDebug ( 'Left ' + left ) ;
addDebug ( 'Right ' + right ) ;
addDebug ( 'answer.value ' + answer . value ) ;
if ( right == idAnswer && left == answer . value ) {
addDebug ( 'Score for this answer: ' + questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) ;
if ( questions _answers _ponderation [ idQuestion ] [ idAnswer ] ) {
myScore += questions _answers _ponderation [ idQuestion ] [ idAnswer ] ;
} else {
// myScore++;
}
}
}
}
} else {
if ( questions _answers _correct [ idQuestion ] [ idAnswer ] != 0 ) {
real _answers [ j ] = false ;
addDebug ( "Partial score: " + myScore ) ;
addDebug ( "--------- end --- idAnswer #" + idAnswer + '------------------' ) ;
}
addDebug ( "Score: " + myScore ) ;
interactionScore = myScore ;
scoreMax += questions _score _max [ idQuestion ] ;
break ;
case 'free' :
//ignore for now as a score cannot be given
interactionType = 'free' ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_free' ) ;
if ( answer && answer . value ) {
interactionAnswers += answer . value
}
//interactionScore = questions_score_max[idQuestion];
interactionScore = 0 ;
scoreMax += questions _score _max [ idQuestion ] ;
//interactionAnswers = document.getElementById('question_'+(idQuestion)+'_free').value;
//correct responses work by pattern, see SCORM Runtime Env Doc
//interactionCorrectResponses += questions_answers_correct[idQuestion].toString();
break ;
case 'hotspot' :
interactionType = 'sequencing' ;
interactionScore = 0 ;
//if(question_score && question_score[idQuestion]){
// interactionScore = question_score[idQuestion];
//} //else, 0
//interactionAnswers = document.getElementById('question_'+(idQuestion)+'_free').innerHTML;
//correct responses work by pattern, see SCORM Runtime Env Doc
//for(k=0;k<questions_answers_correct[idQuestion].length;k++)
//{
// interactionCorrectResponses += questions_answers_correct[idQuestion][k].toString()+',';
//}
break ;
case 'exact' :
interactionType = 'exact' ;
interactionScore = 0 ;
var real _answers = new Array ( ) ;
for ( var j = 0 ; j < questions _answers [ idQuestion ] . length ; j ++ ) {
var idAnswer = questions _answers [ idQuestion ] [ j ] ;
var answer = document . getElementById ( 'question_' + ( idQuestion ) + '_exact_' + ( idAnswer ) ) ;
if ( answer . checked == true ) {
interactionAnswers += idAnswer + ', ' ;
if ( questions _answers _correct [ idQuestion ] [ idAnswer ] != 0 ) {
real _answers [ j ] = true ;
} else {
real _answers [ j ] = false ;
}
} else {
real _answers [ j ] = true ;
if ( questions _answers _correct [ idQuestion ] [ idAnswer ] != 0 ) {
real _answers [ j ] = false ;
} else {
real _answers [ j ] = true ;
}
}
}
}
var final _answer = true ;
for ( var z = 0 ; z < real _answers . length ; z ++ ) {
if ( real _answers [ z ] == false ) {
final _answer = false ;
var final _answer = true ;
for ( var z = 0 ; z < real _answers . length ; z ++ ) {
if ( real _answers [ z ] == false ) {
final _answer = false ;
}
}
interactionScore = 0 ;
addDebug ( real _answers ) ;
if ( final _answer ) {
//getting only the first score where we save the weight of all the question
interactionScore = questions _answers _ponderation [ idQuestion ] [ 1 ] ;
}
}
interactionScore = 0 ;
console . log ( real _answers ) ;
if ( final _answer ) {
//getting only the first score where we save the weight of all the question
interactionScore = questions _answers _ponderation [ idQuestion ] [ 1 ] ;
}
if ( _debug ) {
console . log ( "Score: " + interactionScore ) ;
}
scoreMax += questions _score _max [ idQuestion ] ;
addDebug ( "Score: " + interactionScore ) ;
scoreMax += questions _score _max [ idQuestion ] ;
break ;
}
tmpScore += interactionScore ;
doLMSSetValue ( 'cmi.interactions.' + idQuestion + '.id' , 'Q' + idQuestion ) ;
doLMSSetValue ( 'cmi.interactions.' + idQuestion + '.type' , interactionType ) ;
doLMSSetValue ( 'cmi.interactions.' + idQuestion + '.student_response' , interactionAnswers ) ;
@ -621,29 +634,81 @@ function checkAnswers(interrupted)
doLMSSetValue ( 'cmi.core.score.max' , scoreMax ) ;
doLMSSetValue ( 'cmi.core.score.raw' , tmpScore ) ;
//g et status
// G et status
var mastery _score = doLMSGetValue ( 'cmi.student_data.mastery_score' ) ;
if ( mastery _score <= 0 ) {
mastery _score = ( scoreMax * 0.80 ) ;
}
if ( tmpScore > mastery _score ) {
if ( tmpScore >= mastery _score ) {
status = 'passed' ;
} else {
status = 'failed' ;
}
if ( _debug ) {
console . log ( 'student_score: ' + tmpScore ) ;
console . log ( 'mastery_score: ' + mastery _score ) ;
console . log ( 'cmi.core.score.max: ' + scoreMax ) ;
console . log ( 'cmi.core.lesson_status: ' + status ) ;
}
addDebug ( 'student_score: ' + tmpScore ) ;
addDebug ( 'mastery_score: ' + mastery _score ) ;
addDebug ( 'cmi.core.score.max: ' + scoreMax ) ;
addDebug ( 'cmi.core.lesson_status: ' + status ) ;
doLMSSetValue ( 'cmi.core.lesson_status' , status ) ;
if ( interrupted && ( status != 'completed' ) && ( status != 'passed' ) ) {
doLMSSetValue ( 'cmi.core.exit' , 'suspended' ) ;
}
return false ; //do not submit the form
}
( function ( $ ) {
//Shuffle all rows, while keeping the first column
//Requires: Shuffle
$ . fn . shuffleRows = function ( ) {
return this . each ( function ( ) {
var main = $ ( /table/i . test ( this . tagName ) ? this . tBodies [ 0 ] : this ) ;
var firstElem = [ ] , counter = 0 ;
main . children ( ) . each ( function ( ) {
firstElem . push ( this . firstChild ) ;
} ) ;
main . shuffle ( ) ;
main . children ( ) . each ( function ( ) {
this . insertBefore ( firstElem [ counter ++ ] , this . firstChild ) ;
} ) ;
} ) ;
}
/* Shuffle is required */
$ . fn . shuffle = function ( ) {
return this . each ( function ( ) {
var items = $ ( this ) . children ( ) ;
return ( items . length )
? $ ( this ) . html ( $ . shuffle ( items ) )
: this ;
} ) ;
}
$ . shuffle = function ( arr ) {
for (
var j , x , i = arr . length ; i ;
j = parseInt ( Math . random ( ) * i ) ,
x = arr [ -- i ] , arr [ i ] = arr [ j ] , arr [ j ] = x
) ;
return arr ;
}
} ) ( jQuery ) ;
/ *
* Assigns any event handler to any element
* @ param object Element on which the event is added
* @ param string Name of event
* @ param string Function to trigger on event
* @ param boolean Capture the event and prevent
* /
function addEvent ( elm , evType , fn , useCapture )
{
if ( elm . addEventListener ) {
elm . addEventListener ( evType , fn , useCapture ) ;
return true ;
} else if ( elm . attachEvent ) {
var r = elm . attachEvent ( 'on' + evType , fn ) ;
return r ;
} else {
elm [ 'on' + evType ] = fn ;
}
}
Julio Montoya
8 years ago