move string comparison outside for loop

Author: archmoj

src/components/modebar/buttons.js

@@ -390,6 +390,9 @@ modeBarButtons.resetCameraLastSave3d = {
 function handleCamera3d(gd, ev) {
     var button = ev.currentTarget;
     var attr = button.getAttribute('data-attr');
+    var resetLastSave = attr === 'resetLastSave';
+    var resetDefault = attr === 'resetDefault';
+
     var fullLayout = gd._fullLayout;
     var sceneIds = fullLayout._subplots.gl3d || [];
     var aobj = {};
@@ -402,12 +405,12 @@ function handleCamera3d(gd, ev) {
         var scene = fullLayout[sceneId]._scene;
         var didUpdate;
 
-        if(attr === 'resetLastSave') {
+        if(resetLastSave) {
             aobj[camera + '.up'] = scene.viewInitial.up;
             aobj[camera + '.eye'] = scene.viewInitial.eye;
             aobj[camera + '.center'] = scene.viewInitial.center;
             didUpdate = true;
-        } else if(attr === 'resetDefault') {
+        } else if(resetDefault) {
             aobj[camera + '.up'] = null;
             aobj[camera + '.eye'] = null;
             aobj[camera + '.center'] = null;