Is there a simple way to inject a javascript into a HtmlDocument object without using PhantomJS? Is there such a method in HtmlAgilityPack.HtmlDocument class?
Any advice is apreciated, Thank you!
2 Answers
You can inject a script tag (with script in it) in a HTMLDocument.
You still need something to execute the javascript though. If you want your c# code to somehow evaluate the result of the javascript - especially if you are doing dom manipulation - then PhantomJS is probably the best way to go as it's a headless browser that you can run without user interaction and interface.
The short answer is yes, but i think what you want is not possible without an engine that knows both javascript and the html dom. There are alternatives to PhantomJS like http://slimerjs.org/ so my cheeky answer is still yes ;)
Hint: Don't be afraid to run PhantomJS or the like.
answered Mar 5, 2015 at 13:43
Per Hornshøj-Schierbeck
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3 Comments
Alin
Yes I am doing DOM manipulation. I think I will try to use PhantomJS after all. Can you please provide an example of how I can get a javascript variable in C#?
Alin
For example I have a variable var price = productPrice(); I want to evaluate the function productPrice() and get the price in C# using PhantomJS.
Per Hornshøj-Schierbeck
Are you doing testing on a website, or are you trying to automate a task, or are you perhaps 'scraping' a site? I think context will help a lot here.
You can create the element with
HtmlElement script = doc.CreateElement("SCRIPT");
Set the value with the script that you want and then attach to the Header of the HtmlDocument
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