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rustbook.js
60 lines (53 loc) · 2.18 KB
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rustbook.js
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document.addEventListener("DOMContentLoaded", function(event) {
document.getElementById("toggle-nav").onclick = toggleNav;
function toggleNav() {
var toc = document.getElementById("toc");
var pagewrapper = document.getElementById("page-wrapper");
toggleClass(toc, "mobile-hidden");
toggleClass(pagewrapper, "mobile-hidden");
}
function toggleClass(el, className) {
// from http://youmightnotneedjquery.com/
if (el.classList) {
el.classList.toggle(className);
} else {
var classes = el.className.split(' ');
var existingIndex = classes.indexOf(className);
if (existingIndex >= 0) {
classes.splice(existingIndex, 1);
} else {
classes.push(className);
}
el.className = classes.join(' ');
}
}
// The below code is used to add prev and next navigation links to the bottom
// of each of the sections.
// It works by extracting the current page based on the url and iterates over
// the menu links until it finds the menu item for the current page. We then
// create a copy of the preceding and following menu links and add the
// correct css class and insert them into the bottom of the page.
var toc = document.getElementById('toc').getElementsByTagName('a');
var href = document.location.pathname.split('/').pop();
if (href === 'index.html' || href === '') {
href = 'README.html';
}
for (var i = 0; i < toc.length; i++) {
if (toc[i].attributes['href'].value.split('/').pop() === href) {
var nav = document.createElement('p');
nav.className = 'nav-previous-next';
if (i > 0) {
var prevNode = toc[i-1].cloneNode(true);
prevNode.className = 'left';
nav.appendChild(prevNode);
}
if (i < toc.length - 1) {
var nextNode = toc[i+1].cloneNode(true);
nextNode.className = 'right';
nav.appendChild(nextNode);
}
document.getElementById('page').appendChild(nav);
break;
}
}
});