Use method available in all browsers (#13804)

String.contains work in Firefox, not in Chrome or Opera

Change-Id: I074d3c79629fd699841d3b39a36620511233ce6c

diff --git a/WebContent/VAADIN/vaadinBootstrap.js b/WebContent/VAADIN/vaadinBootstrap.js
index ea1ea21b46c33fc3048e873d5de7f39a4ced0c2c..df46d8bc725ceda6765b74dfbb48f1b864b86f95 100644 (file)
--- a/WebContent/VAADIN/vaadinBootstrap.js
+++ b/WebContent/VAADIN/vaadinBootstrap.js
@@ -67,7 +67,7 @@
                        // "v-app-loading" we have only received the HTML 
                        // but not yet started the widget set
                        // (UIConnector removes the v-app-loading div).
-                       if (className && className.contains("v-app-loading")) {
+                       if (className && className.indexOf("v-app-loading") != -1) {
                                return false;
                        }
                }