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Let's say I want to write a script to go to a certain Wikipedia page, and then copy and save some text/images into a database (jquery ajax or whatever).

How do I get my script to connect to a website like http://en.wikipedia.org/wiki/Rock_and_roll and then start doing stuff like:

var body_text = document.getElementById(....);

Hope I explained my goal well enough.

Cheers.

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3

You cannot do something like that due to cross domain security issues

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arg I thought this was the case. Last time I had to manually download the html source and then run my script on that lol. Any other solutions to accomplish this task? I'll check out nodejs as someone else mentioned.
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It's true you cannot do what you need using JavaScript from a browser, but it can be done using server-side JavaScript. Take a look at nodejs.org for an example of server-side JavaScript programming.

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1

Its not possible just with browser based JavaScript, but you can use YQL. With yql you can query (theoretically) every website, and get the result as jsonp in your browser.

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