webview with Javascript

[tremara1]

I have been hunting around the forum for an answer as to whether or not you can send a value to a JavaScript function in a web view from b4a. I have not found the answer as yet. I looked at webviewextras, am I on the right track?

 

[warwound]

Your b4a code can execute any javascript in a WebView - so yes you can send data to the webpage javascript.

You can execute that javascript by prefixing the javascript statement(s) with the javascript: protocol and then using the WebView LoadUrl method.
Say you want to execute the javascript statement:

myFunction(1, 20);

You can execute that statement using this syntax:

MyWebView.LoadUrl("javascript:myFunction(1, 20);")

WebViewExtras has a method executeJavascript which you could use instead:

MyWebViewExtras.executeJavascript(MyWebView, "myFunction(1, 20);")

Both techniques are identical - the executeJavascript method simply takes the javascript statement(s), adds the 'javascript:' protocol and then calls the WebVew LoadUrl method.

Martin.

 

[tremara1]

that was quick

Thanks that should help me no end......