discourse/public/javascripts/count.js

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1.4 KiB
JavaScript
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/* global discourseUrl:true */
(function() {
// Discover the URLs we want counts for
var links = document.getElementsByTagName("a"),
countFor = [];
for(var i=0; i<links.length; i++) {
var link = links[i],
href = link.href;
if (href && href.length) {
if (/#discourse-comments$/.test(href)) {
countFor.push(href);
}
}
var dataEmbed = link.getAttribute('data-discourse-embed-url');
if (dataEmbed && dataEmbed.length) {
countFor.push(dataEmbed);
}
}
// JSONP callback to update counts
window.discourseUpdateCounts = function(result) {
if (result && result.counts) {
var byUrl = result.counts;
for (var i=0; i<links.length; i++) {
var link = links[i],
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linkCount = byUrl[link.href] || byUrl[link.href.replace(/\/#/, '#')];
if (linkCount) {
var t = document.createTextNode(" (" + linkCount + ")");
link.appendChild(t);
}
}
}
};
if (countFor.length > 0) {
// Send JSONP request for the counts
var d = document.createElement('script'),
srcUrl = discourseUrl + "embed/count?callback=discourseUpdateCounts";
for (var j=0; j<countFor.length; j++) {
srcUrl += "&" + "embed_url[]=" + encodeURIComponent(countFor[j]);
}
d.src = srcUrl;
(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(d);
}
})();