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Help Javascript…

  • Please help on javascript.
    I have a post contains couple of images. And I want to count how many images the post contains and display it.
    When I use
    document.images.length
    it returns all image numbers, not only inside post but header, footer, and other images too.

    When page DOM structure looks like this:

    #page
     #header
     #main
      #maincontent
      #mainside
     #footer

    How can I count image numbers only inside a post?

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