Access the customer service of seven fish, customize the method window.openSdk method, and report the method not function

In the app, access Qishui customer service, load and display H5 with WebView, but it is Android 456 (Android 4 browser) WebView, custom method window.openSdk method, and call this method not function. (function(){})() {window.opensdk (){window.opensdk (){window.opensdk (){window.opensdk (){window.opensdk (); After that, it was changed to function and then called, and the subsequent step by step test call order was modified to solve the problem