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nodejs/doc/toc.js
Ryan Dahl 5f82c4baf0 Improve webpage
- add google-analytics
- add example to front-page
2009-10-16 14:29:51 +02:00

110 lines
3.3 KiB
JavaScript

/* Author: Mihai Bazon, September 2002
* http://students.infoiasi.ro/~mishoo
*
* Table Of Content generator
* Version: 0.4
*
* Feel free to use this script under the terms of the GNU General Public
* License, as long as you do not remove or alter this notice.
*/
/* modified by Troy D. Hanson, September 2006. License: GPL */
/* modified by Stuart Rackham, October 2006. License: GPL */
function getText(el) {
var text = "";
for (var i = el.firstChild; i != null; i = i.nextSibling) {
if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
text += i.data;
else if (i.firstChild != null)
text += getText(i);
}
return text;
}
function TocEntry(el, text, toclevel) {
this.element = el;
this.text = text;
this.toclevel = toclevel;
}
function tocEntries(el, toclevels) {
var result = new Array;
var re = new RegExp('[hH]([2-'+(toclevels+1)+'])');
// Function that scans the DOM tree for header elements (the DOM2
// nodeIterator API would be a better technique but not supported by all
// browsers).
var iterate = function (el) {
for (var i = el.firstChild; i != null; i = i.nextSibling) {
if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
var mo = re.exec(i.tagName)
if (mo)
result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
iterate(i);
}
}
}
iterate(el);
return result;
}
// This function does the work. toclevels = 1..4.
function generateToc(toclevels) {
var toc = document.getElementById("toc");
var entries = tocEntries(document.getElementsByTagName("body")[0], toclevels);
for (var i = 0; i < entries.length; ++i) {
var entry = entries[i];
if (entry.element.id == "")
entry.element.id = "toc" + i;
var a = document.createElement("a");
a.href = "#" + entry.element.id;
a.appendChild(document.createTextNode(entry.text));
var div = document.createElement("div");
div.appendChild(a);
div.className = "toclevel" + entry.toclevel;
toc.appendChild(div);
}
if (entries.length == 0)
document.getElementById("header").removeChild(toc);
}
(function() {
var includes = ['sh_main.js', 'sh_javascript.min.js', 'sh_vim-dark.css'];
var head = document.getElementsByTagName("head")[0];
for (var i = 0; i < includes.length; i ++) {
var ext = includes[i].match(/\.([^.]+)$/);
switch (ext[1]) {
case 'js':
var element = document.createElement('script');
element.type = 'text/javascript';
element.src = includes[i];
break;
case 'css':
var element = document.createElement('link');
element.type = 'text/css';
element.rel = 'stylesheet';
element.media = 'screen';
element.href = includes[i];
break;
}
head.appendChild(element);
}
var i = setInterval(function () {
if (window["sh_highlightDocument"]) {
sh_highlightDocument();
try {
var pageTracker = _gat._getTracker("UA-10874194-2");
pageTracker._trackPageview();
} catch(err) {}
clearInterval(i);
}
}, 100);
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
})();