124 lines
3.1 KiB
JavaScript
124 lines
3.1 KiB
JavaScript
var navigation;
|
|
|
|
(function (window, $) {
|
|
var $sections = $('article'),
|
|
idCounter = 1,
|
|
idPrefix = 'sub-section-',
|
|
navTemplate = '<div class="nav-wrap"><nav class="nav" id="nav"></nav></div>',
|
|
$nav,
|
|
cache = {};
|
|
|
|
function init () {
|
|
updateCache();
|
|
createHtml();
|
|
|
|
$($nav).on('click', 'a', onClickNavItem);
|
|
}
|
|
|
|
function createHtml () {
|
|
var html = '',
|
|
section,
|
|
curSection,
|
|
subsection,
|
|
curSubSection;
|
|
|
|
$(navTemplate).appendTo('body');
|
|
$nav = $('#nav');
|
|
|
|
for (section in cache) {
|
|
curSection = cache[section];
|
|
|
|
html += '<div class="nav--section">' +
|
|
'<h2 class="nav--section-title">' +
|
|
'<a href="#' + section + '">' + curSection.title +'</a>' +
|
|
'</h2>';
|
|
|
|
if (curSection.subSections) {
|
|
html += '<div class="nav--subsection">';
|
|
|
|
for (subsection in curSection.subSections) {
|
|
curSubSection = curSection.subSections[subsection];
|
|
html += '' +
|
|
'<h3 class="nav--subsection-title">' +
|
|
'<a href="#' + subsection + '">' + curSubSection.title + '</a>' +
|
|
'</h3>'
|
|
|
|
}
|
|
html += '</div>';
|
|
}
|
|
|
|
html += '</div>';
|
|
}
|
|
|
|
$nav.html(html);
|
|
}
|
|
|
|
function updateCache () {
|
|
cache = {};
|
|
idCounter = 1;
|
|
|
|
var id,
|
|
title,
|
|
subTitles,
|
|
$subTitle,
|
|
$current;
|
|
|
|
$sections.each(function () {
|
|
$current = $(this);
|
|
title = $('h2', $current);
|
|
subTitles = $('h3', $current);
|
|
id = title.attr('id');
|
|
|
|
cache[id] = {
|
|
title: title.text(),
|
|
offset: title.offset().top,
|
|
subSections: ''
|
|
};
|
|
|
|
if (subTitles.length) {
|
|
cache[id].subSections = {};
|
|
|
|
subTitles.each(function () {
|
|
var $subTitle = $(this),
|
|
subId = $(this).attr('id');
|
|
|
|
if (!subId) {
|
|
subId = idPrefix + idCounter++;
|
|
$subTitle.attr('id', subId);
|
|
}
|
|
|
|
cache[id].subSections[subId] = {
|
|
title: $subTitle.text(),
|
|
offset: $subTitle.offset().top
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
|
|
function scrollTo (pos) {
|
|
$('body, html').animate({
|
|
scrollTop: pos
|
|
}, 700, 'easeInOutCubic')
|
|
}
|
|
|
|
function onClickNavItem (e) {
|
|
e.preventDefault();
|
|
|
|
var $link = $(e.target),
|
|
$section = $($link.attr('href'));
|
|
|
|
$section.addClass('-hilited-');
|
|
|
|
setTimeout(function () {
|
|
$section.removeClass('-hilited-');
|
|
}, 1400)
|
|
|
|
scrollTo($section.offset().top - 16)
|
|
}
|
|
|
|
navigation = {
|
|
init: init
|
|
}
|
|
})(window, jQuery);
|