viveksantayana
93bf9e94fb
Corrected error display bug Removed redundant auth and models in quiz client app
588 lines
19 KiB
JavaScript
588 lines
19 KiB
JavaScript
// Bind Listeners
|
|
|
|
$("input[name='font-select']").change(function(){
|
|
let $choice = $(this).val();
|
|
set_font($choice);
|
|
});
|
|
|
|
$("input[name='font-size']").change(function(){
|
|
let $choice = $(this).val();
|
|
set_font_size($choice);
|
|
});
|
|
|
|
$("input[name='bg-select']").change(function(){
|
|
let $choice = $(this).val();
|
|
set_bg_colour($choice);
|
|
});
|
|
|
|
$("#btn-toggle-navigator").click(function(event){
|
|
check_answered();
|
|
update_navigator();
|
|
if ($quiz_navigator.is(":hidden")) {
|
|
if ($quiz_settings.is(":visible")) {
|
|
toggle_settings = true;
|
|
$quiz_settings.fadeOut();
|
|
}
|
|
$quiz_render.fadeOut();
|
|
$quiz_navigator.fadeIn();
|
|
$(".navigator-text").fadeIn();
|
|
$(".review-text").fadeOut();
|
|
toggle_navigator = false;
|
|
$(window).scrollTop(0);
|
|
} else {
|
|
$quiz_navigator.fadeOut();
|
|
if (toggle_settings) {
|
|
$quiz_settings.fadeIn();
|
|
$(window).scrollTop(0);
|
|
toggle_settings = false;
|
|
} else {
|
|
$quiz_render.fadeIn();
|
|
$(window).scrollTop(0);
|
|
}
|
|
}
|
|
event.preventDefault();
|
|
});
|
|
|
|
$("#btn-toggle-settings").click(function(event){
|
|
if (($quiz_settings).is(":hidden")) {
|
|
if ($quiz_navigator.is(":visible")) {
|
|
toggle_navigator = true;
|
|
$quiz_navigator.fadeOut();
|
|
}
|
|
$quiz_render.fadeOut();
|
|
$quiz_settings.fadeIn();
|
|
$(window).scrollTop(0);
|
|
toggle_settings = false;
|
|
} else {
|
|
$quiz_settings.fadeOut();
|
|
if (toggle_navigator) {
|
|
$quiz_navigator.fadeIn();
|
|
toggle_navigator = false;
|
|
$(window).scrollTop(0);
|
|
} else {
|
|
$quiz_render.fadeIn();
|
|
$(window).scrollTop(0);
|
|
}
|
|
}
|
|
event.preventDefault();
|
|
});
|
|
|
|
$(".btn-quiz-return").click(function(event){
|
|
$quiz_navigator.fadeOut();
|
|
$quiz_settings.fadeOut();
|
|
$quiz_render.fadeIn();
|
|
$(window).scrollTop(0);
|
|
toggle_settings = false;
|
|
toggle_navigator = false;
|
|
event.preventDefault();
|
|
});
|
|
|
|
$(".btn-dummy").click(function(event){
|
|
event.preventDefault();
|
|
});
|
|
|
|
$("#navigator-container").on("click", ".q-navigator-button", function(event){
|
|
check_answered();
|
|
update_navigator();
|
|
current_question = parseInt($(this).attr("name"));
|
|
$quiz_navigator.fadeOut();
|
|
$quiz_render.fadeIn();
|
|
$question_title.focus();
|
|
$(window).scrollTop(0);
|
|
toggle_navigator = false;
|
|
toggle_settings = false;
|
|
render_question();
|
|
check_flag();
|
|
event.preventDefault();
|
|
});
|
|
|
|
$(".q-question-nav").click(function(event){
|
|
check_answered();
|
|
update_navigator();
|
|
if ($(this).attr("id") == "q-nav-next") {
|
|
if (current_question < questions.length) {
|
|
current_question ++;
|
|
}
|
|
} else if ($(this).attr("id") == "q-nav-prev") {
|
|
if (current_question > 0) {
|
|
current_question --;
|
|
}
|
|
} else if ($(this).hasClass("q-navigator-button")) {
|
|
current_question = $(this).attr("name");
|
|
$quiz_render.fadeIn();
|
|
$quiz_navigator.fadeOut();
|
|
toggle_navigator = false;
|
|
toggle_settings = false;
|
|
}
|
|
render_question();
|
|
check_flag();
|
|
event.preventDefault();
|
|
});
|
|
|
|
$("#q-nav-flag").click(function(event){
|
|
if (question_status[current_question] != 1) {
|
|
question_status[current_question] = 1;
|
|
$(this).removeClass().addClass("btn btn-warning");
|
|
$(this).attr("title", "Question Flagged for revision. Click to un-flag.");
|
|
} else {
|
|
question_status[current_question] = 0;
|
|
$(this).removeClass().addClass("btn btn-secondary");
|
|
$(this).attr("title", "Question Un-Flagged. Click to flag for revision.");
|
|
}
|
|
window.localStorage.setItem('question_status', JSON.stringify(question_status));
|
|
update_navigator();
|
|
event.preventDefault();
|
|
});
|
|
|
|
$("#btn-start-quiz").click(function(event){
|
|
|
|
$.ajax({
|
|
url: `/api/questions/`,
|
|
type: 'POST',
|
|
data: JSON.stringify({'_id': _id}),
|
|
contentType: "application/json",
|
|
success: function(response) {
|
|
$(this).fadeOut();
|
|
$(".btn-quiz-return").fadeIn();
|
|
$(".quiz-console").fadeIn();
|
|
$("#quiz-settings").fadeOut();
|
|
$("#quiz-navigator").fadeOut();
|
|
$(".quiz-start-text").fadeOut();
|
|
time_limit = response.time_limit;
|
|
start_time = response.start_time;
|
|
questions = response.questions;
|
|
total_questions = questions.length;
|
|
window.localStorage.setItem('questions', JSON.stringify(questions));
|
|
window.localStorage.setItem('start_time', JSON.stringify(start_time));
|
|
window.localStorage.setItem('time_limit', JSON.stringify(time_limit));
|
|
render_question();
|
|
build_navigator();
|
|
check_flag();
|
|
if (time_limit != 'null' && time_limit != null) {
|
|
$("#q-timer-widget").fadeIn();
|
|
time_remaining = get_time_remaining();
|
|
clock = setInterval(timer, 1000);
|
|
}
|
|
if (response.time_adjustment > 0) {
|
|
const $alert = $("#alert-box");
|
|
$alert.html(
|
|
`<div class="alert alert-primary alert-dismissible fade show" role="alert">
|
|
<i class="bi bi-exclamation-triangle-fill" title="Alert"></i>
|
|
User code validated. Extra time of ${response.time_adjustment} minutes added to the exam time limit.
|
|
<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
|
|
</div>
|
|
`
|
|
);
|
|
$alert.focus();
|
|
}
|
|
},
|
|
error: function(response) {
|
|
error_response(response);
|
|
}
|
|
});
|
|
|
|
event.preventDefault();
|
|
});
|
|
|
|
$("#quiz-question-options").on("change", ".quiz-option", function(event){
|
|
$name = parseInt($(this).attr("name"));
|
|
$value = $(this).attr("value");
|
|
answers[$name] = $value;
|
|
window.localStorage.setItem('answers', JSON.stringify(answers));
|
|
});
|
|
|
|
$("#q-review-answers").click(function(event){
|
|
check_answered();
|
|
update_navigator();
|
|
if ($quiz_navigator.is(":hidden")) {
|
|
if ($quiz_settings.is(":visible")) {
|
|
toggle_settings = true;
|
|
$quiz_settings.fadeOut();
|
|
}
|
|
$quiz_render.fadeOut();
|
|
$quiz_navigator.fadeIn();
|
|
$(".navigator-text").fadeOut();
|
|
$(".review-text").fadeIn();
|
|
toggle_navigator = false;
|
|
$(window).scrollTop(0);
|
|
} else {
|
|
$quiz_navigator.fadeOut();
|
|
if (toggle_settings) {
|
|
$quiz_settings.fadeIn();
|
|
toggle_settings = false;
|
|
} else {
|
|
$quiz_render.fadeIn();
|
|
}
|
|
}
|
|
event.preventDefault();
|
|
});
|
|
|
|
$(".quiz-button-submit").click(function(event){
|
|
let submission = {
|
|
'_id': _id,
|
|
'answers': answers
|
|
}
|
|
|
|
$.ajax({
|
|
url: `/api/submit/`,
|
|
type: 'POST',
|
|
data: JSON.stringify(submission),
|
|
contentType: "application/json",
|
|
success: function(response) {
|
|
window.localStorage.clear();
|
|
window.location.href = `/result/`;
|
|
},
|
|
error: function(response) {
|
|
error_response(response);
|
|
}
|
|
});
|
|
|
|
event.preventDefault();
|
|
});
|
|
|
|
// Functions
|
|
|
|
function set_font(value = 'osdefault') {
|
|
let font_styles = ['arial', 'comicsans', 'opendyslexic', 'tahoma', 'verdana']
|
|
|
|
for (let i = 0; i < font_styles.length; i ++) {
|
|
if (font_styles[i] != value) {
|
|
$("body").removeClass( `q-f-${font_styles[i]}` );
|
|
};
|
|
};
|
|
|
|
if (value != 'osdefault') {
|
|
$("body").addClass(`q-f-${value}`);
|
|
};
|
|
|
|
display_settings['font-select'] = value;
|
|
window.localStorage.setItem('display_settings', JSON.stringify(display_settings));
|
|
$('input[name="font-select"][value="' + value + '"]').prop('checked', true);
|
|
}
|
|
|
|
function set_font_size(value = '14pt') {
|
|
let font_sizes = ['12pt', '16pt', '18pt']
|
|
|
|
for (let i = 0; i < font_sizes.length; i ++) {
|
|
if (font_sizes[i] != value) {
|
|
$("body").removeClass( `q-f-${font_sizes[i]}` );
|
|
};
|
|
};
|
|
|
|
if (value != '14pt') {
|
|
$("body").addClass(`q-f-${value}`);
|
|
};
|
|
|
|
display_settings['font-size'] = value;
|
|
window.localStorage.setItem('display_settings', JSON.stringify(display_settings));
|
|
$('input[name="font-size"][value="' + value + '"]').prop('checked', true);
|
|
}
|
|
|
|
function set_bg_colour(value = 'bg-light') {
|
|
let backgrounds = ['bg-light', 'q-bg-light-1', 'q-bg-light-2', 'alert-primary', 'alert-secondary', 'alert-dark', 'bg-dark']
|
|
|
|
for (let i = 0; i < backgrounds.length; i ++) {
|
|
if (backgrounds[i] != value) {
|
|
$("body").removeClass(backgrounds[i]);
|
|
if (backgrounds[i] == 'bg-dark') {
|
|
$("body").removeClass('text-light');
|
|
};
|
|
if (backgrounds[i] == 'alert-primary' || backgrounds[i] == 'alert-secondary' || backgrounds[i] == 'alert-dark') {
|
|
$("body").removeClass('text-dark');
|
|
};
|
|
};
|
|
};
|
|
|
|
$("body").addClass(value);
|
|
if (value == 'bg-dark') {
|
|
$("body").addClass('text-light');
|
|
};
|
|
if (value == 'alert-primary' || value == 'alert-secondary' || value == 'alert-dark') {
|
|
$("body").addClass('text-dark');
|
|
};
|
|
|
|
display_settings['bg-select'] = value;
|
|
window.localStorage.setItem('display_settings', JSON.stringify(display_settings));
|
|
$('input[name="bg-select"][value="' + value + '"]').prop('checked', true);
|
|
}
|
|
|
|
function get_settings_from_storage() {
|
|
let display_settings = window.localStorage.getItem('display_settings')
|
|
if (display_settings != null) {
|
|
return JSON.parse(display_settings);
|
|
};
|
|
return {
|
|
'font-select': 'osdefault',
|
|
'font-size': '14pt',
|
|
'bg-select': 'bg-light'
|
|
}
|
|
}
|
|
|
|
function apply_settings(settings) {
|
|
set_font(settings['font-select']);
|
|
set_font_size(settings['font-size']);
|
|
set_bg_colour(settings['bg-select']);
|
|
}
|
|
|
|
function render_question() {
|
|
if (current_question == 0) {
|
|
$nav_prev.addClass('disabled');
|
|
}
|
|
if (current_question == questions.length - 1) {
|
|
$nav_next.addClass('disabled');
|
|
}
|
|
if ($nav_prev.hasClass('disabled') && current_question > 0) {
|
|
$nav_prev.removeClass('disabled');
|
|
}
|
|
if ($nav_next.hasClass('disabled') && current_question < questions.length - 1) {
|
|
$nav_next.removeClass('disabled');
|
|
}
|
|
var question = questions[current_question];
|
|
let header_text = question.question_header;
|
|
var block_length = 0;
|
|
if ('block_length' in question) {
|
|
block_length = question['block_length'];
|
|
};
|
|
var block_q_no = 0;
|
|
if ('block_q_no' in question) {
|
|
block_q_no = question['block_q_no'];
|
|
}
|
|
header_text = header_text.replace('<block_remaining>', (block_length - block_q_no).toString());
|
|
$question_header.html(header_text);
|
|
$question_text.html(question.text);
|
|
$question_title.html(`Question ${current_question + 1} of ${ questions.length }.`);
|
|
|
|
var q_no = question['q_no'];
|
|
var options = question.options;
|
|
var options_output = '';
|
|
for (let i = 0; i < options.length; i ++) {
|
|
var add_checked = ''
|
|
if (q_no in answers) {
|
|
if (answers[q_no] == options[i]) {
|
|
add_checked = 'checked';
|
|
}
|
|
}
|
|
options_output += `<div class="form-check">
|
|
<input type="radio" class="form-check-input quiz-option" id="q${current_question}-${i}" name="${q_no}" value="${options[i]}" ${add_checked}>
|
|
<label for="q${current_question}-${i}" class="form-check-label">${options[i]}</label>
|
|
</div>`;
|
|
}
|
|
$question_options.html(options_output);
|
|
$question_title.focus();
|
|
$(window).scrollTop(0);
|
|
}
|
|
|
|
function check_answered() {
|
|
var question = questions[current_question];
|
|
var name = question.q_no;
|
|
if (question_status[current_question] == 0 || question_status[current_question] == -1) {
|
|
if (!$(`input[name='${name}']:checked`).val()) {
|
|
question_status[current_question] = -1;
|
|
} else {
|
|
question_status[current_question] = 2;
|
|
}
|
|
window.localStorage.setItem('question_status', JSON.stringify(question_status));
|
|
}
|
|
}
|
|
|
|
function check_flag() {
|
|
if (!(current_question in question_status)) {
|
|
question_status[current_question] = 0;
|
|
window.localStorage.setItem('question_status', JSON.stringify(question_status));
|
|
}
|
|
switch (question_status[current_question]) {
|
|
case -1:
|
|
$nav_flag.removeClass().addClass('btn btn-danger progress-bar-striped');
|
|
$nav_flag.attr("title", "Question Incomplete. Click to flag for revision.");
|
|
break;
|
|
case 1:
|
|
$nav_flag.removeClass().addClass('btn btn-warning');
|
|
$nav_flag.attr("title", "Question Flagged for revision. Click to un-flag.");
|
|
break;
|
|
case 2:
|
|
$nav_flag.removeClass().addClass('btn btn-success');
|
|
$nav_flag.attr("title", "Question Answered. Click to flag for revision.");
|
|
break;
|
|
default:
|
|
$nav_flag.removeClass().addClass('btn btn-secondary');
|
|
$nav_flag.attr("title", "Question Un-Flagged. Click to flag for revision.");
|
|
}
|
|
}
|
|
|
|
function build_navigator() {
|
|
$nav_container.html('')
|
|
var output = ''
|
|
for (let i = 0; i < questions.length; i ++) {
|
|
let add_class, add_href, add_status = '';
|
|
switch (question_status[i]) {
|
|
case -1:
|
|
add_class = 'btn-danger progress-bar-striped';
|
|
add_href = 'href="#"';
|
|
add_status = 'Incomplete';
|
|
break;
|
|
case 1:
|
|
add_class = 'btn-warning';
|
|
add_href = 'href="#"';
|
|
add_status = 'Flagged';
|
|
break;
|
|
case 2:
|
|
add_class = 'btn-success';
|
|
add_href = 'href="#"';
|
|
add_status = 'Answered';
|
|
break;
|
|
default:
|
|
add_class = 'btn-secondary disabled';
|
|
add_href = '';
|
|
add_status = 'Unseen';
|
|
}
|
|
output += `<a ${add_href} class="q-navigator-button btn ${add_class}" name=${i} title="Question ${i+1}: ${add_status}">Q${i + 1}</a>`;
|
|
}
|
|
$nav_container.html(output);
|
|
}
|
|
|
|
function update_navigator() {
|
|
let button = $(`.q-navigator-button[name=${current_question}]`)
|
|
if (current_question in question_status) {
|
|
switch (question_status[current_question]) {
|
|
case -1:
|
|
button.removeClass().addClass("q-navigator-button btn btn-danger progress-bar-striped");
|
|
button.attr("title", `Question ${current_question + 1}: Incomplete`);
|
|
break;
|
|
case 1:
|
|
button.removeClass().addClass("q-navigator-button btn btn-warning");
|
|
button.attr("title", `Question ${current_question + 1}: Flagged`);
|
|
break;
|
|
case 2:
|
|
button.removeClass().addClass("q-navigator-button btn btn-success");
|
|
button.attr("title", `Question ${current_question + 1}: Answered`);
|
|
break;
|
|
default:
|
|
button.removeClass().addClass("q-navigator-button btn btn-secondary disabled");
|
|
button.attr("title", `Question ${current_question + 1}: Unseen`);
|
|
}
|
|
}
|
|
}
|
|
|
|
function start() {
|
|
$("#btn-start-quiz").fadeOut();
|
|
$(".btn-quiz-return").fadeIn();
|
|
$(".quiz-console").fadeIn();
|
|
$("#quiz-settings").fadeOut();
|
|
$("#quiz-navigator").fadeOut();
|
|
$(".quiz-start-text").fadeOut();
|
|
|
|
questions = JSON.parse(window.localStorage.getItem('questions'));
|
|
total_questions = questions.length;
|
|
start_time = window.localStorage.getItem('start_time');
|
|
time_limit = window.localStorage.getItem('time_limit');
|
|
|
|
let get_answers = window.localStorage.getItem('answers');
|
|
if (get_answers != null) {
|
|
answers = JSON.parse(get_answers);
|
|
}
|
|
|
|
let get_status = window.localStorage.getItem('question_status');
|
|
if (get_status != null) {
|
|
question_status = JSON.parse(get_status);
|
|
}
|
|
|
|
render_question();
|
|
build_navigator();
|
|
check_flag();
|
|
if (time_limit != 'null' && time_limit != null) {
|
|
$("#q-timer-widget").fadeIn();
|
|
time_remaining = get_time_remaining();
|
|
clock = setInterval(timer, 1000);
|
|
}
|
|
}
|
|
|
|
function check_started() {
|
|
let questions = window.localStorage.getItem('questions');
|
|
let time_limit = window.localStorage.getItem('time_limit');
|
|
let start_time = window.localStorage.getItem('start_time')
|
|
if (questions != null && start_time != null && time_limit != null) {
|
|
start();
|
|
}
|
|
}
|
|
|
|
function get_time_remaining() {
|
|
var end_time = new Date(time_limit).getTime();
|
|
var _start_time = new Date().getTime();
|
|
return end_time - _start_time;
|
|
}
|
|
|
|
function timer() {
|
|
var hours = Math.floor((time_remaining % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
|
|
var minutes = Math.floor((time_remaining % (1000 * 60 * 60)) / (1000 * 60));
|
|
var seconds = Math.floor((time_remaining % (1000 * 60)) / 1000);
|
|
|
|
if (time_remaining > 0) {
|
|
var timer_display = '';
|
|
if (hours > 0) {
|
|
timer_display = `${hours.toString()}:`;
|
|
}
|
|
if (minutes > 0 || hours > 0) {
|
|
if (minutes < 10) {
|
|
timer_display += `0${minutes.toString()}:`;
|
|
} else {
|
|
timer_display += `${minutes.toString()}:`;
|
|
}
|
|
}
|
|
if (seconds < 10) {
|
|
timer_display += `0${seconds.toString()}`;
|
|
} else {
|
|
timer_display += seconds.toString();
|
|
}
|
|
$timer.html(timer_display);
|
|
time_remaining -= 1000
|
|
} else {
|
|
$timer.html('Expired');
|
|
clearInterval(clock);
|
|
stop()
|
|
}
|
|
}
|
|
|
|
function stop() {
|
|
$quiz_render.fadeOut();
|
|
$quiz_navigator.fadeOut();
|
|
$quiz_timeout.fadeIn();
|
|
$("#btn-toggle-navigator").addClass('disabled');
|
|
$("#btn-toggle-settings").addClass('disabled')
|
|
}
|
|
|
|
// Variable Definitions
|
|
|
|
const _id = window.localStorage.getItem('_id');
|
|
|
|
var current_question = 0;
|
|
var total_questions = 0;
|
|
var question_status = {};
|
|
var answers = {};
|
|
var questions = [];
|
|
var time_limit, start_time, time_remaining;
|
|
|
|
var display_settings = get_settings_from_storage();
|
|
|
|
const $quiz_settings = $("#quiz-settings");
|
|
const $quiz_navigator = $("#quiz-navigator");
|
|
const $quiz_render = $("#quiz-render");
|
|
const $quiz_timeout = $("#quiz-timeout");
|
|
const $nav_flag = $("#q-nav-flag");
|
|
const $nav_next = $("#q-nav-next");
|
|
const $nav_prev = $("#q-nav-prev");
|
|
const $nav_container = $("#navigator-container");
|
|
const $timer = $("#q-timer-display");
|
|
var clock
|
|
|
|
var toggle_settings = false;
|
|
var toggle_navigator = false;
|
|
|
|
const $question_title = $("#quiz-question-title");
|
|
const $question_header = $("#quiz-question-header");
|
|
const $question_text = $("#quiz-question-text");
|
|
const $question_options = $("#quiz-question-options");
|
|
|
|
// Execution on Load
|
|
|
|
apply_settings(display_settings);
|
|
check_started(); |