Parsing text from webpage in JavaScript?

Question

I am learning JavaScript and what I want to do is search for keywords from a text-based website, given a URL.

An example website would just contain text like:

"a" : "nice"
"b" : "nope"
"a" : "try again"
"c" : "whatever"

Where I'd just like to find "a" and store what it is connected to. What should I look for in JavaScript that would let me do something like this?

Another example of "text-based" website: http://graph.facebook.com/zuck

When you say text based, do you mean preformatted text? or is the text inside of (X)HTML tags (presumably form)? — user50049
– user50049, Commented Feb 27, 2011 at 8:58
That looks more like a JSON response. JSON can be easily parsed in JavaScript. How do you access these "websites" from your JavaScript? — Felix Kling
– Felix Kling, Commented Feb 27, 2011 at 9:00

mplungjan · Accepted Answer · 2011-02-27 09:53:51Z

1

That is JSON using the GRAPH api from facebook - However you need to use the facebook API to get at it here is a tutorial

edited Feb 27, 2011 at 9:53

answered Feb 27, 2011 at 9:00

mplungjan

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3 Comments

Felix Kling Over a year ago

In your example, person is not JSON. It is a JavaScript object. And how is this related with the query string?

mplungjan Over a year ago

Sheez - purist ;) Fixed it now

Lucas Over a year ago

So how exactly can I get this JSON object? Say for the example above, I had the URL: graph.facebook.com/zuck. How easy would it to find "first_name" and store "Mark"?

Tomasz Nurkiewicz · Accepted Answer · 2011-02-27 09:00:55Z

0

The content you want to parse is so called JSON. You can parse JSON either using eval() (not advised) or some library (there are plenty of them).

The bigger problem is how are going to get this data? If you want to load this script directly from Facebook, you can't use AJAX because of same origin policy.

answered Feb 27, 2011 at 9:00

Tomasz Nurkiewicz

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