CODEWITHSUNDEEP
javascriptasp.nethtmlc#-4.0html-parsing
Maddy
Maddy

Reputation: 263

Get the result of javascript function while scraping web page content

Is it possible to extract the value of a variable used in java script in a web page. I need to get the url stored in javascript function in a web page. In web page the function is called using <a href,

when we click on that hyperlink , java script function is called and the url is returned.
Below is the code,

<a class="dld" OnClick="download_file();" href="javascript:">&nbsp;</a>

The script function is 

function download_file() {
    var summaryFlag     = 0;
        if(document.getElementById("frmincludefile").checked){
    summaryFlag=1; }
    url = '/filedatabase/file_process_request.html?mru=53616c7465645f5f3f24b8f4a86301eb202e67fbb679df4356e24fee9d7a17a099010eb5acf5985c&type=doc';
    url += '&sum='+summaryFlag+'&logo=0&xcode=xtritiuminx&serve_txt=0&folderid=';
    document.location   = url;
}

How can i get value of url variable.

Upvotes: 0

Views: 1042

Answers (3)

Maddy
Maddy

Reputation: 263

I was not able to the result of java script function but now i'm invoking the javascript using webBrowser1.Document.InvokeScript("download_file"); By invoking the java script i'm able to download the file.

Upvotes: 1

Minko Gechev
Minko Gechev

Reputation: 25682

You can do this using variable in the upper scope. In the example bellow I'm using global variable (bad practice) to save the localUrl value from the redirect function:

var url = '';

function redirect() {
  var googleRadio = document.getElementById('google');
  if (googleRadio.checked) {
    localUrl = 'http://google.com';
    url = localUrl;
  }
}

Upvotes: 0

sandip patil
sandip patil

Reputation: 658

Set the URL var value in any hidden field

for e.g. 

document.getElementById("hidden_field_name").value = url;

Upvotes: 0

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