Javascript/Greasemonkey match(), regex

Question

I need to grab data from this text from this page: http://www.chess.com/home/game_archive?sortby=&show=echess&member=deckers1066

I cannot seem to get it working using.

var text = document.body;

var results = text.match(/id=[0-9]*>/g);

I need to grab all occurrences that look something like this

/echess/game?id=60942234

I'm interested more in the id number

I think `document.body.toString(); // "[object HTMLBodyElement]"` would be the first insight into what's going wrong, http://stackoverflow.com/a/1732454/444991 should be the second. — Matt, Dec 08 '12 at 12:21

score 1 · Accepted Answer · answered Dec 08 '12 at 12:23

You've got two problems with your code; one is the string you want to search is document.body.innerHTML and the other is the RegExp is looking for the end tag to the element, > without a quote before it. Try this

var results = document.body.innerHTML.match(/id=\d+/g);

Note I completely ommited the end tag because this RegExp is greedy and it means you don't have to worry about HTML parsing.

score 0 · Answer 2 · answered Dec 08 '12 at 12:27

0

Please don't use regular expressions for this. You should be using a proper DOM parser (there are many available for pretty much every language) and then selecting the IDs using that.

If you insist on using regex (which I would recommend against), Paul S's answer is the best.

answered Dec 08 '12 at 12:27

callumacrae

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If OP was asking for anything element specific (i.e. looking at ` – Paul S. Dec 08 '12 at 12:33

Javascript/Greasemonkey match(), regex

2 Answers2