ResourceHandler sometimes fails when open the browser for the first time?

[tp1415926535]

I inherited ResourceHandler and ISchemeHandlerFactory classes, set RegisterScheme in app class to get embedded resources(html and js files), and use ExecuteScriptAsyncWhenPageLoaded to call js functions,
But when I show the browser window(child window) for the first time, it sometimes throw error that some functions or variables are undefined. Then I close this child window and show again, it will never report an error again and successfully display the page ,execute the function . This is the case in most cases when I test it.
So I want to know where I might be wrong?

[amaitland]

Please provide

• the exact error message you are seeing
• code example that reproduces the problem

Please fork the minimum example, make only the minimal changes required to reproduce the problem, squash all changes into a single commit, push changes to GitHub and post a link here to your fork.

So I want to know where I might be wrong?

Without an example it's impossible to say. See https://stackoverflow.com/help/minimal-reproducible-example

[tp1415926535]

I found similar question here and referenced the documentation mentioned in the recommendations. And then I put my Browser.ExecuteScriptAsyncWhenPageLoaded event in to Browser.LoadingStateChanged method , the probability of error seems to have been reduced. So, I don't know why ExecuteScriptAsyncWhenPageLoaded sometimes happened before resources loaded, although it seems that this still happens sometimes.