Can You Use Attribute Values as CSS Selectors?

Can Attribute Values Be Used As CSS Selectors?

Dynamically updating CSS based on input values is a common requirement in web development. Browsers do not inherently support this functionality, as CSS selectors typically target static attributes.

Dynamic Values

As explained, simple CSS rules target attribute values, not the actual values. For dynamic updates, JavaScript can be used to manipulate CSS based on input values.

Original Answer

However, static value targeting is still possible using CSS attribute selectors:

<code class="css">input[value="United States"] { color: #F90; }</code>

This selector targets inputs with a value attribute of "United States" and sets the text color to red.

CSS Attribute Selectors

CSS attribute selectors reference input attributes in the following ways:

• [attr] - Matches elements with a set "attr" attribute, regardless of value.
• [attr=val] - Matches elements with a "attr" attribute value equal to "val".
• [attr~=val] - Matches elements with a "attr" attribute value containing "val".
• [attr|=val] - Matches elements with a "attr" attribute value equal to "val" or starting with "val-".

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