Wrap for...in loop bodies with hasOwnProperty.

jquery.flot.categories.js

@@ -110,13 +110,16 @@ as "categories" on the axis object, e.g. plot.getAxes().xaxis.categories.
     }
 
     function categoriesTickGenerator(axis) {
-        var res = [];
-        for (var label in axis.categories) {
-            var v = axis.categories[label];
+        var res = [],
+            categories = axis.categories;
+        for (var label in categories) {
+            if (Object.prototype.hasOwnProperty.call(categories, label)) {
+                var v = categories[label];
                 if (v >= axis.min && v <= axis.max) {
                     res.push([v, label]);
                 }
             }
+        }
 
         res.sort(function (a, b) { return a[0] - b[0]; });
 
@@ -138,9 +141,11 @@ as "categories" on the axis object, e.g. plot.getAxes().xaxis.categories.
             }
             else {
                 for (var v in o) {
+                    if (Object.prototype.hasOwnProperty.call(o, v)) {
                         c[v] = o[v];
                     }
                 }
+            }
 
             series[axis].categories = c;
         }

jquery.flot.js

@@ -1552,14 +1552,16 @@ Licensed under the MIT license.
         function setupGrid() {
             var axes = allAxes(),
                 showGrid = options.grid.show,
+                margin = options.grid.margin || 0,
                 i, a;
 
             // Initialize the plot's offset from the edge of the canvas
 
             for (a in plotOffset) {
-                var margin = options.grid.margin || 0;
+                if (Object.prototype.hasOwnProperty.call(plotOffset, a)) {
                     plotOffset[a] = typeof margin === "number" ? margin : margin[a] || 0;
                 }
+            }
 
             executeHooks(hooks.processOffset, [plotOffset]);
 

jquery.flot.selection.js

@@ -237,6 +237,7 @@ The plugin allso adds the following methods to the plot object:
             var axis, from, to, key, axes = plot.getAxes();
 
             for (var k in axes) {
+                if (Object.prototype.hasOwnProperty.call(axes, k)) {
                     axis = axes[k];
                     if (axis.direction === coord) {
                         key = coord + axis.n + "axis";
@@ -250,6 +251,7 @@ The plugin allso adds the following methods to the plot object:
                         }
                     }
                 }
+            }
 
             // backwards-compat stuff - to be removed in future
             if (!ranges[key]) {