dynalist_formulas.user.js

// ==UserScript==
// @name     Dynalist Count Tags
// @include  https://dynalist.io/*
// @require  http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// @grant    GM_addStyle
// ==/UserScript==
/*- The @grant directive is needed to work around a design change
    introduced in GM 1.0.   It restores the sandbox.
*/


var current_poll_interval;
function startCurrentPolling() {
    current_poll_interval = setInterval(currentPoll, 1000);
}

function replace_node_text(i,obj) {
}

function currentPoll() {
    //cache for perormance
 var nodetags = $("a.node-tag");

 //strings to look for
 var countstring = '#count';
 var sumstring = '#sum';

 //find anchor nodes containting count function, iterate
 nodetags.filter("[title^='Filter " + countstring + "']").each(function(i, obj) {
   //get actual function out of title -eg #count(#test)
   var title = $(this).attr('title');
   var re = /\#count\(([#@][^\)]*)\)/;
   var found = title.match(re);

   if (found != null) {
     //fullString = found[0];
     var tagToCount = found[1];

     //Search for node tags with title such as "Filter #test", and count them
     var numItems = nodetags.filter("[title='Filter " + tagToCount + "']").length;

     //Replace into content of original (function) anchor
     $(this).text(numItems);
   }
 });

 //find anchor nodes containting sum function, iterate
 nodetags.filter("[title^='Filter " + sumstring + "']").each(function(i, obj) {
   //get actual function out of title -eg #sum(#test)
   var title = $(this).attr('title');
   var re = /\#sum\(([#@][^\)]*)\)/;
   var found = title.match(re);

   if (found != null) {
     var tagToSum = found[1];

     var total = 0;
     //Search for node tags with title such as "Filter #test=", iterate
     nodetags.filter("[title^='Filter " + tagToSum + "=']").each(function(j, obj1) {
       //from titles, grab the number after the equals. Eg #test=10 <- we want 10
       var title1 = $(this).attr('title');
       var re1 = /\#[^=]*=(\d+)/;
       var found1 = title1.match(re1);
       //total it up
       total += parseInt(found1[1]) || 0;
     });
     //Replace into content of original (function) anchor
     $(this).text(total);
   }
 });

}

function stopCurrentPolling() {
    clearInterval(current_poll_interval);
}

startCurrentPolling();