Use regular expressions to automatically generate HTML attributes in your styling

My ionic/angular app generates a custom tag element with a unique _ngcontent attribute on each refresh, like so:

<tag _ngcontent-hgr-c2>...</tag> (1st refresh)
<tag _ngcontent-agj-c7>...</tag> (2nd refresh)
<tag _ngcontent-cfx-c5>...</tag> (3rd refresh)

Is there a way to use regex to target these custom tag attributes?

I tried the following without success:

tag[^=_ngcontent-] {
  color: red !important;
}

I also attempted to just target the tag itself like this:

tag {
  color: red !important;
}

Answer №1

As mentioned in this response, CSS does have a form of regex capability, but it is limited to attribute values rather than attributes themselves. The information from the W3C documentation supports this as well, which could present challenges when dealing with custom Angular attributes and applying regex.

If you are attempting to style your tag similarly to the second example, one workaround is to define its styles within the global styles.scss file. While not ideal, this method should suffice for achieving the desired outcome.

This insightful article from an angular-blog (referenced here) aided me in grasping the concept of style encapsulation in Angular.

Answer №2

Regrettably, CSS does not offer wildcarding support for attribute names.

If you can modify the application code responsible for generating the custom tags, consider assigning classes to these elements (if the application allows).

For more information, check out this post.

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