JavaScript - Image style alterations are not operating as expected

Let me break it down for you:

onmouseover="imageOn(bg-index);" onmouseout="imageOff(bg-index);"

I've got these two attributes set on a table tagged with ID table-title. These functions are included in an external JS file: 

If the name is 'bg-index', then document.getElementById("table-title").style.backgroundImage = "url('images/bg-index.png')"; }

...and similar for imageOff but using a different image. However, this setup isn't functioning as expected; can you offer any insight into what might be wrong?

javascripthtmlcssimage

Answer №1

onmouseover="turnImageOn('bg-index');" onmouseout="turnImageOff('bg-index');"

Experiment with using the function variables as strings for a different approach.

Answer №2

Have you considered the specific hierarchy of CSS? It's important to check if there are any conflicting CSS entries that might be overriding the changes you're attempting to make. It's possible that a selector is enforcing the image to always display.

The specificity level of a selector can fall into one of four categories:

  1. Inline styles (Presence of style in document). An inline style is directly attached to the element within your XHTML document. For example, <h1 style="color: #fff;">

  2. IDs (# of ID selectors) IDs serve as identifiers for page elements, like #div.

  3. Classes, attributes, and pseudo-classes (# of class selectors). This category includes .classes, [attributes], and pseudo-classes such as :hover, :focus, etc.

  4. Elements and pseudo-elements (# of Element (type) selectors). This encompasses selectors like :before and :after.

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