shopping order sort. maybe needs some fine tuning

static/script.js

@@ -1,3 +1,22 @@
+Array.prototype.stableSort = function(cmp) {
+  cmp = !!cmp ? cmp : (a, b) => {
+    if (a < b) return -1;
+    if (a > b) return 1;
+    return 0;
+  };
+  let stabilizedThis = this.map((el, index) => [el, index]);
+  let stableCmp = (a, b) => {
+    let order = cmp(a[0], b[0]);
+    if (order != 0) return order;
+    return a[1] - b[1];
+  }
+  stabilizedThis.sort(stableCmp);
+  for (let i=0; i<this.length; i++) {
+    this[i] = stabilizedThis[i][0];
+  }
+  return this;
+}
+
 function insertAtEnd(myField, myValue) {
     myField.value += myValue;
 }
@@ -76,15 +95,32 @@ window.onclick = function(event) {
   }
 }
 
-function sortMarkdown() {
+function sortMarkdown(boughtOrder=false) {
   var divs = document.getElementsByClassName("entry");
   divs = Array.prototype.slice.call(divs, 0);
-  divs.sort(function(a, b) {
-    return a.children[1].innerHTML.localeCompare(b.children[1].innerHTML);  
-  });
+  if (boughtOrder) {
+    divs.stableSort(orderStringSorter);
+  } else {
+    divs.stableSort(fullStringSorter);
+  }
   var parent = document.getElementById('entry_loop');
   parent.innerHTML = "";
   for(var i = 0, l = divs.length; i < l; i++) {
     parent.appendChild(divs[i]);
   }  
 }
+function fullStringSorter(a,b) {
+  var aValue=a.children[1].innerHTML;
+  var bValue=b.children[1].innerHTML;
+  if (aValue < bValue) return -1;
+  if (aValue > bValue) return 1;
+  return 0;
+}
+function orderStringSorter(a,b) {
+  var aValue=a.children[1].innerHTML.substring(0,3);
+  var bValue=b.children[1].innerHTML.substring(0,3);
+  if ( aValue == "[x]" && bValue == "[ ]" ) return 1; 
+  if ( aValue == "[ ]" && bValue == "[x]" ) return -1; 
+  return 0;
+}
+