How to access the DOM from javascript? #29
Description
Hi,
I try to use the following code to access a DOM object inside the HTML:
var config = Configuration.Default.WithJavaScript().WithCss();
var parser = new HtmlParser(config);
// sample html
var source = @"<!doctype html><html><body><div id='test'>content</div></body>";
var document = parser.Parse(source);
var jsService = config.Services.OfType<JavaScriptProvider>().FirstOrDefault(x => x.Engine.Type == "text/javascript");
var jintEngine = jsService.Engine.GetOrCreateJint(document);
// trying to modify the context, but I don't know how to specify the correct thisBinding
jintEngine.EnterExecutionContext(jintEngine.GlobalEnvironment, jintEngine.GlobalEnvironment, ???);
// try to extract the contents of the div with JS
var result = jintEngine.Execute("document.querySelectorAll('#test').innerHTML").GetCompletionValue();
jintEngine.LeaveExecutionContext();
Console.WriteLine(result);Some remarks:
- I'm not allowed to modify the html content in the 'source' variable
- I'm not sure if modifying the execution context is the correct way
The problem:
When I run this code (without modifying the execution environment) I get a JavascriptException saying that the 'document' is undefined. I've tried to modify the execution environment, but I have no idea what the correct value for the thisBinding parameter is in the EnterExecutionContext function. How can I set it to the window or the document?