X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=gallery%2Finteraction-api.js;h=8f6d706dbdf49575e69fe43dea86f38242a95762;hb=ce31caf22475e3e1fd6d9fea192d61ff4fcd7fac;hp=4b852114c2e540b35366dc5b3c4daf25c143a206;hpb=464b5f504e75c5d2b98eff12b3b8ad520a1729cb;p=dygraphs.git

diff --git a/gallery/interaction-api.js b/gallery/interaction-api.js
index 4b85211..8f6d706 100644
--- a/gallery/interaction-api.js
+++ b/gallery/interaction-api.js
@@ -1,3 +1,4 @@
+/*global Dygraph */
 // Code for a variety of interaction models. Used in interaction.html, but split out from
 // that file so they can be tested in isolation.
 //
@@ -50,9 +51,9 @@ function offsetToPercentage(g, offsetX, offsetY) {
   var h = g.toDomCoords(null, yar0[0])[1] - yOffset;
 
   // Percentage from the left.
-  var xPct = w == 0 ? 0 : (x / w);
+  var xPct = w === 0 ? 0 : (x / w);
   // Percentage from the top.
-  var yPct = h == 0 ? 0 : (y / h);
+  var yPct = h === 0 ? 0 : (y / h);
 
   // The (1-) part below changes it from "% distance down from the top"
   // to "% distance up from the bottom".
@@ -73,9 +74,9 @@ function dblClickV3(event, g, context) {
   var yPct = percentages[1];
 
   if (event.ctrlKey) {
-    zoom(g, -.25, xPct, yPct);
+    zoom(g, -0.25, xPct, yPct);
   } else {
-    zoom(g, +.2, xPct, yPct);
+    zoom(g, +0.2, xPct, yPct);
   }
 }
 
@@ -83,7 +84,7 @@ var lastClickedGraph = null;
 
 function clickV3(event, g, context) {
   lastClickedGraph = g;
-  Dygraph.cancelEvent(event);
+  event.preventDefault();;
 }
 
 function scrollV3(event, g, context) {
@@ -105,7 +106,7 @@ function scrollV3(event, g, context) {
   var yPct = percentages[1];
 
   zoom(g, percentage, xPct, yPct);
-  Dygraph.cancelEvent(event);
+  event.preventDefault();
 }
 
 // Adjusts [x, y] toward each other by zoomInPercentage%
@@ -164,7 +165,7 @@ function moveV4(event, g, context) {
         for (var col = 1; col < 3; col++) {
           // TODO(konigsberg): these will throw exceptions as data is removed.
           var vals =  g.getValue(row, col);
-          if (vals == null) { continue; }
+          if (vals === null || vals === undefined) { continue; }
           var val = vals[0];
           var y = g.toDomCoords(null, val)[1];
           var diff2 = Math.abs(canvasy - y);