Fetching "Inspect Elements" from HTML

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Anton 2015-9-7

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https://ww2.mathworks.cn/matlabcentral/answers/240680-fetching-inspect-elements-from-html

评论： Anton 2015-9-8

Hello

So i dont know if this can be done or not, but i have not been able to find any posts about it. What i want to do is fetch information that changes in diffrent elements on a HTML page. To simply download the page source using URLread gives me nothing since the values are not stored there. It might just be my lack of knowledge about HTML that makes me ask this question, but so be it.

Thanks in advance

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Cedric 2015-9-7

编辑：Cedric 2015-9-7

Could you provide the URL of a few of these pages, and explain what you are trying to extract?

Anton 2015-9-7

What i am trying to extract is odds from a betting site. I was asked by a friend to plot over time how the odds changes before the game starts to find a "sweet-spot" to place the bet.

Here is the URL i've been using: https://svenskaspel.se/?pageid=/sport/oddsetlangen

Its a Swedish betting site, if you wonder why its filled with jibberish.

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Answer 1

Guillaume 2015-9-7

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https://ww2.mathworks.cn/matlabcentral/answers/240680-fetching-inspect-elements-from-html#answer_191566

编辑：Guillaume 2015-9-7

If the data you're interested in gets displayed through javascript then there's not much you can do short of implementing your own web browser (at least the javascript interpreting bit) in matlab or interacting with an existing browser. See this related discussion.

Possibly, the website you're accessing may have an API to fetch the data you want, most likely using xml. In that case, you could use webread.

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Cedric 2015-9-8

编辑：Cedric 2015-9-8

Image recognition will not work too well either, because you have to open pages manually, take a screen shot, etc, so this cannot be done on a regular and fast basis.

If I were you, I would try to see if I could access the content after the JS (or whatever else) is execute, from e.g.

web( 'https://svenskaspel.se/?pageid=/sport/oddsetlangen' )

or from Firefox. If you open the page in Firefox, right click on one of the numbers and select "Inspect element (Q)", you will see that the inspector tool displays the value. There may be a way to get this information from some plugin rather than the raw HTML source which contains the call.

Anton 2015-9-8