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I am using the webBrowser control in C# to load a webpage and need to call a JavaScript function that returns a string value. I got a solution to use the InvokeScript method, and I tried a lot, but everything has failed.
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It is possible to implement a C API in JavaScript! This is the approach used in many of Emscripten's libraries, like SDL1 and OpenGL. You can use it to write your own APIs to call from C/C++.
No, you can't trigger JavaScript from CSS directly. What you can do is use CSS selectors to find the elements you want to watch in this way, and then watch for mouse events.
Can you specify what failed?
My sample below consists of a form with a WebBrowser and a Button.
The object called y in the end has the sentence "i did it!". So with me it works.
public partial class Form1 : Form { public Form1() { InitializeComponent(); webBrowser1.DocumentText = @"<html><head> <script type='text/javascript'> function doIt() { alert('hello again'); return 'i did it!'; } </script> </head><body>hello!</body></html>"; } private void button1_Click(object sender, EventArgs e) { object y = webBrowser1.Document.InvokeScript("doIt"); } } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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