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I'm designing a new theme and in my page template a have a section where an image is displayed . I would like this image to change depending on which page is loaded.

The section is a DIV like this: <DIV class="ximage"></DIV>

What I would like to do is to add a class to the DIV depending om page loaded and then style the class with background-image in CSS.

I know you can do this with for example body_class() if you want to add classes to BODY. But how do I do this with a DIV?

There will be quite a few pages in this theme, so ceate a template for each page seems wrong.

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  • Since each page has its own unique ID, just give the div a class made of a name along with this very ID (e.g., class="ximage page-<?php the_ID(); ?>").
    – tfrommen
    Mar 10, 2013 at 17:12

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You might want to consider using the Wordpress function body_class()

<body <?php body_class($class); ?>>

Then you could use the body class as your current page reference.

This function is for example used by the Twenty-Twelve theme.

For a single post it will become 

<body class="single single-post ...">

and for the home page:

<body class="home blog ...">

You can read more about this function in the Codex here:

http://codex.wordpress.org/Function_Reference/body_class

Edit:

I know you can do this with for example body_class() if you want to add classes to BODY. But how do I do this with a DIV?

You could use it in your div tag:

<div <?php body_class(); ?>></div>

but it should be sufficient to have this only in the body tag.

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  • But this is already in the BODY section. So adding a background-image in CSS to a class will also add same image to BODY? Or perhaps you can target the CSS?
    – BoBoz
    Mar 10, 2013 at 17:54
  • You could try .home .ximage {background:...} and .single .ximage {background:...}
    – birgire
    Mar 10, 2013 at 17:58
  • The whole purpose for the body_class() is so you can target elements in the css by a specific page. To try and add to it is overkill when it's already done for you.
    – Jacob Rambo
    Mar 10, 2013 at 18:27

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