Utilizing AJAX and javascript for extracting information from websites through screen scraping

Is it possible to scrape a screen using AJAX and JavaScript? I'm interested in scraping the following link:

I tried the technique mentioned on w3schools.com, but encountered an "access denied" message. Can anyone help me understand why this error is occurring and provide a solution?

Thank you in advance.

Answer №1

If you're attempting to scrape data from the FedEx website using your own domain's Javascript directly, you may encounter issues. To bypass this obstacle, consider making an AJAX call to a script within your domain to handle the tracking request on your behalf.

Explore this resource for guidance on setting up proxies.

Answer №2

Expanding on Beau Simensen's suggestion, one option is to utilize Ajax to make a call to your own domain:

Ajax.Request("http://mydomain.com/proxy.php?url=http://www.fedex.com/Tracking?ascend_header=1&clienttype=dotcom&cntry_code=us&language=english&tracknumbers=776812461212825");

The proxy.php script would then handle the request by making a CURL call (or similar method) to the specified URL and returning the result. This technique enables you to access any website through the proxy.php file hosted on your local domain.

Answer №3

Security measures restrict Ajax/XMLHttpRequest calls to the same-site policy, preventing direct loading of remote sites. There are reports that Firefox 3.1 may support cross-site requests, but it is unclear if other browsers have followed suit.

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