Merge pull request #3491 from plotly/3489-v-modebar-ie11-pr

replace prepend() calls since they aren't supported in IE11
plotly · Jan 29, 2019 · b1fd7d6 · b1fd7d6
2 parents ea7941b + 4b164a2
commit b1fd7d6
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diff --git a/src/components/modebar/modebar.js b/src/components/modebar/modebar.js
@@ -88,7 +88,7 @@ proto.update = function(graphInfo, buttons) {
             }
 
             if(fullLayout.modebar.orientation === 'v') {
-                this.element.prepend(logoGroup);
+                this.element.insertBefore(logoGroup, this.element.childNodes[0]);
             } else {
                 this.element.appendChild(logoGroup);
             }

diff --git a/test/jasmine/assets/unpolyfill.js b/test/jasmine/assets/unpolyfill.js
@@ -18,5 +18,17 @@
                 ].join(' '));
             }
         });
+
+        Object.defineProperty(item, 'prepend', {
+            configurable: true,
+            enumerable: true,
+            writable: true,
+            value: function remove() {
+                throw Error([
+                    'test/jasmine/assets/unpolyfill.js error: calling ChildNode.prepend()',
+                    'which is not available in IE.'
+                ].join(' '));
+            }
+        });
     });
 })([Element.prototype, CharacterData.prototype, DocumentType.prototype]);