function gradeanswers() { var correctans=0 if (document.checker.variable.value!="1") { document.checker.variable.value=1; var tempans1=document.quiz.question1.value; var tempans2=document.quiz.question2.value; var tempans3=document.quiz.question3.value; if(index1>1) { var exponent1=document.quiz.exponent1.value; } var exponent2=document.quiz.exponent2.value; var exponent3=document.quiz.exponent3.value; if(tempans1=="") { var tempans1="-----"; } if(tempans2=="") { var tempans2="-----"; } if(tempans3=="") { var tempans3="-----"; } if(index1>1) { if(exponent1=="") { var exponent1="-----"; } } if(exponent2=="") { var exponent2="-----"; } if(exponent3=="") { var exponent3="-----"; } var msg=open("","DisplayWindow"); msg.document.write(""); msg.document.write(""+ ""); msg.document.write("

Your results:"); msg.document.writeln("

Problem 1.

"); if(index1<2) { if(tempans1==truevalue1[index1] || tempans1==closevalue1[index1]) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans1 + ' is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln('

The correct answer is ' + truevalue1[index1] + '.

'); } } else{ if(tempans1==truevalue1[index1] && exponent1==exp1[index1]) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans1 + ' x 10^{' + exponent1 + '} is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln('

The correct answer is ' + truevalue1[index1] + ' x 10^{' + exp1[index1] + '}.

'); } } msg.document.writeln("

Problem 2.

"); if(tempans2==truevalue2[index2] && exponent2==exp2[index2]) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans2 + ' x 10^{' + exponent2 + '} is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln('

The correct answer is ' + truevalue2[index2] + 'x 10^{' + exp2[index2] + '}.

'); } msg.document.writeln("

Problem 3.

"); if(tempans3==truevalue3[index3] && exponent3==exp3[index3]) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans3 + ' x 10^{' + exponent3 + '} is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln('

The correct answer is ' + truevalue3[index3] + 'x 10^{' + exp3[index3] + '}.

'); } msg.document.writeln("

Your Total score is: " + correctans + " out of 3.

"); msg.document.close(); } else { alert("Sorry, you cannot resubmit your answers. Click \"Start\" at the top of the page to start over."); } }