Android Question webview page modify on-the-go

[peacemaker]

HI, All

Who knows WEB well - suggest, please, how to replace some text in the page that opened in a webview ?
I guees, by Javascript maybe possible something...

 

[Erel]

It is indeed possible by injecting JavaScript with WebViewExtras library. Example of JS: https://stackoverflow.com/a/1358815

 

[peacemaker]

All my test with replacing whole the HTML by JS injection - no success. Yes, i can get the web-page text, but after modification i can only make WebView.LoadHTML for sure.
And links do not work, as it's now local page is opened.
Task is read any web-page with partially edited text, translated into another language.

WebViewExtras1.executeJavascript(WebView1, "document.body.parentElement.innerHTML = " & QUOTE & Html & QUOTE)

A new HTML replaces the whole the page, yes, but edited HTML got from the sourced page is not assigned, not got by WebView.

 

[peacemaker]

SOLVED:

Sub WebView1_PageFinished (Url As String)
        Dim Javascript As String = $"document.body.innerHTML = document.body.innerHTML.replace(/text_to_search/gi, "text_to_replace");"$
        WebViewExtras1.executeJavascript(WebView1, Javascript)
End Sub

 

[peacemaker]

Next question here - how to understand that Javascript has finished its work - search-and-replace task can be very long...

 

[DonManfred]

1. Please start a new thread for a new question.
2. You are free to put a script there which calls a b4a sub when finished. See webviewextras library example on how it works.