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MDL-9451: Quiz answers can be lost if user navigates before page reloads. I am not totally sure I have fixed this, but I hope so. I moved the printing of the hidden form field with the list of questions on the page to the end of the form, so no answers will be processed unless the whole form loaded. Note that you could still lose data, but only if the page takes a really long time to load and you answer the first question and click submit before the whole quiz is loaded. MDL-11463: The quiz uses two different timers, which is silly. I have removed the javascript that was ocasionally used to put a timer in the browser's title bar. Now we only use the one in the page for all cases. Because MDL-8682 also needed javascript, I renamed timer.js to quiz.js so it could be a library of all the quiz's JavaScript, and started including it properly with require_js.
93 lines
2.9 KiB
JavaScript
93 lines
2.9 KiB
JavaScript
/*
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* JavaScript library for the quiz module.
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*
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* (c) The Open University and others.
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* @author T.J.Hunt@open.ac.uk and others.
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* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
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*/
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/* Used by quiz navigation links to force a form submit, and hence save the user's data. */
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function navigate(page) {
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var ourForm = document.getElementById('responseform');
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ourForm.action = ourForm.action.replace(/page=.*/, 'page=' + page);
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if (ourForm.onsubmit) {
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ourForm.onsubmit();
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}
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ourForm.submit();
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}
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/* Use this in an onkeypress handler, to stop enter submitting the forum unless you
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are actually on the submit button. Don't stop the user typing things in text areas. */
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function check_enter(e) {
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var target = e.target ? e.target : e.srcElement;
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var keyCode = e.keyCode ? e.keyCode : e.which;
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if(keyCode==13 && (!target.type || (target.type!='submit' && target.type!='textarea')))
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return false;
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else
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return true;
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}
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/* Used to update the on-screen countdown clock for quizzes with a time limit */
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function countdown_clock(theTimer) {
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var timeout_id = null;
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quizTimerValue = Math.floor((ec_quiz_finish - new Date().getTime())/1000);
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if(quizTimerValue <= 0) {
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clearTimeout(timeout_id);
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document.getElementById('timeup').value = 1;
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var ourForm = document.getElementById('responseform');
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if (ourForm.onsubmit) {
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ourForm.onsubmit();
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}
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ourForm.submit();
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return;
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}
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now = quizTimerValue;
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var hours = Math.floor(now/3600);
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now = now - (hours*3600);
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var minutes = Math.floor(now/60);
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now = now - (minutes*60);
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var seconds = now;
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var t = "" + hours;
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t += ((minutes < 10) ? ":0" : ":") + minutes;
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t += ((seconds < 10) ? ":0" : ":") + seconds;
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window.status = t.toString();
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if(hours == 0 && minutes == 0 && seconds <= 15) {
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//go from fff0f0 to ffe0e0 to ffd0d0...ff2020, ff1010, ff0000 in 15 steps
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var hexascii = "0123456789ABCDEF";
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var col = '#' + 'ff' + hexascii.charAt(seconds) + '0' + hexascii.charAt(seconds) + 0;
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theTimer.style.backgroundColor = col;
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}
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document.getElementById('time').value = t.toString();
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timeout_id = setTimeout("countdown_clock(theTimer)", 1000);
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}
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/* Use to keep the quiz timer on-screen as the user scrolls. */
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function movecounter(timerbox) {
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var pos;
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if (window.innerHeight) {
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pos = window.pageYOffset
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} else if (document.documentElement && document.documentElement.scrollTop) {
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pos = document.documentElement.scrollTop
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} else if (document.body) {
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pos = document.body.scrollTop
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}
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if (pos < theTop) {
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pos = theTop;
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} else {
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pos += 100;
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}
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if (pos == old) {
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timerbox.style.top = pos + 'px';
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}
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old = pos;
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temp = setTimeout('movecounter(timerbox)',100);
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}
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