Jquery bypasses original stylesheet settings when inline styles are removed

I have a CSS file with various styles defined within it.

One style in particular has the property position set to 'fixed', but this only applies to specific combinations of classes.

For example:

.mystyle.blue {
    position: fixed;
}  

Here, elements with both the classes .mystyle and .blue will have a fixed position, while elements with just .mystyle won't get the same treatment.

In addition to these predefined styles, I have jQuery functions that can dynamically add or remove inline styles. For instance, under certain conditions, all elements with the class .mystyle might receive the position: fixed style.

To accomplish this, I use the following code snippets:

$(".mystyle").css("position", "fixed")
to add the style;

and

$(".mystyle").removeAttr("style");
to remove it.

However, when the inline styles are removed, the original stylesheet settings are no longer applied. This means that even if I expect elements with the .mystyle.blue class to retain the position: fixed styling, they don't.

Do you have any suggestions for a workaround?

UPDATE

I have identified the issue and found a solution, although it's not exactly what I anticipated.

When setting position: fixed via jQuery, I also specify a top position, which is often negative like -64px (although this value is dynamic). However, both properties are removed simultaneously.

In the stylesheet, the code looks like this:

position: fixed;
top: 0;

Initially, I assumed that once the inline styles were removed, both the position and top values would revert back to their original state. Surprisingly, the negative top position doesn't reset to 0 as expected. Although the position does go back to its default behavior.

If I include an !important tag for top: 0!important, then the desired outcome is achieved.

Answer №1

There are no variations of the .mystyle class. Using .mystyle.blue as a CSS selector applies styles to elements with both the myStyle and blue classes simultaneously. Removing either class will result in the rules not being applied.

$(".mystyle").css("position", "fixed")

This code snippet adds position:fixed; to the style attribute of elements on the page that have the mystyle class. It is important to note that mystyle and myStyle represent different classes, as CSS selectors are case-sensitive!

Inline styles take precedence over styles applied through CSS rules unless the stylesheet rules use !important (which should be used sparingly due to its complexity).

$(".mystyle").removeAttr("style"); 

This code removes the entire style attribute, including any previously defined styles such as position:fixed;. To avoid losing previous style rules when hiding and showing elements, it is recommended to reset the position property to its default value of static:

$('.mystyle').css({position:'static'})

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