X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph-utils.js;h=f53c81ea16360486f42429546bfb90955b91b0eb;hb=7bd1be5b6eb3ee09d7da9bb1ab7cd1b3ad5974bd;hp=8c6942b1bdcf5cd3e113ac26c0da9600c06b9ccc;hpb=4ff8c62e5e2e62e81e993fa1df626e62e385d28c;p=dygraphs.git

diff --git a/dygraph-utils.js b/dygraph-utils.js
index 8c6942b..f53c81e 100644
--- a/dygraph-utils.js
+++ b/dygraph-utils.js
@@ -301,6 +301,7 @@ Dygraph.findPosX = function(obj) {
   if(obj.offsetParent) {
     var copyObj = obj;
     while(1) {
+      // NOTE: the if statement here is for IE8.
       var borderLeft = "0";
       if (window.getComputedStyle) {
         borderLeft = window.getComputedStyle(copyObj, null).borderLeft || "0";
@@ -337,6 +338,7 @@ Dygraph.findPosY = function(obj) {
   if(obj.offsetParent) {
     var copyObj = obj;
     while(1) {
+      // NOTE: the if statement here is for IE8.
       var borderTop = "0";
       if (window.getComputedStyle) {
         borderTop = window.getComputedStyle(copyObj, null).borderTop || "0";
@@ -1244,10 +1246,11 @@ Dygraph.isElementContainedBy = function(containee, container) {
   if (container === null || containee === null) {
     return false;
   }
-  while (containee && containee !== container) {
-    containee = containee.parentNode;
+  var containeeNode = /** @type {Node} */ (containee);
+  while (containeeNode && containeeNode !== container) {
+    containeeNode = containeeNode.parentNode;
   }
-  return (containee === container);
+  return (containeeNode === container);
 };