/* the array of questions */
questions = new Array();
/* class definition of question */
/* constructor is the correct answer as string */
function Question(correctAnswer){
this.correct = correctAnswer;
this.feedback = new Array();
this.incorrectFeedback = null;
this.setFeedback = function(answer, feedback){
this.feedback[answer] = feedback;
};
this.setCorrectFeedback = function(corrFeed){
this.feedback[this.correct] = corrFeed;
}
this.setIncorrectFeedback = function(wrongFeed){
this.incorrectFeedback = wrongFeed;
}
this.getCssClass = function(answer){
if(answer == null || answer.length == 0){
return "notanswered";
}else if(this.correct == answer){
return "correct";
}else{
return "wrong";
}
}
this.check = function(answer){
if(this.feedback[answer]){
return this.feedback[answer];
}else if(answer == null || answer.length == 0){
return 'You didn\'t answer this question';
}else if(this.correct == answer){
return 'Well done, \'' + answer + '\' is the correct answer.';
}else{
if(this.incorrectFeedback){
return this.incorrectFeedback
}else{
return 'Sorry, \'' + answer + '\' is not the right answer.';
}
}
};
}
/* this is the function that prints out the feedback window */
function yourscore(thetext, width, height)
{
if(!width) width='300';
if(!height) height='400'
var thefeedback=window.open('','gapfeedback','height='+height + ',width='+ width +',scrollbars=yes');
thefeedback.document.write('BBC Learning English | How to ... | Feedback');
thefeedback.document.write('');
thefeedback.document.write('');
thefeedback.document.write(thetext);
thefeedback.document.write(' Close this window
');
thefeedback.document.write('');
thefeedback.document.close();
}
function checkanswers(thegapfill, width, height) {
feedback = "";
feedback = "Feedback
How to ...";
for(var i = 0; i < questions.length; i++){
answer = thegapfill.elements['sel' + i].value;
questionFeedback = questions[i].check(answer);
feedback = feedback + 'Q' + (i+1) + ': ' + questionFeedback + "
";
}
yourscore(feedback, width, height);
}