Can Multicolor Text Highlighting Be Achieved in a Text Area or Text Input?

Multicolor Text Highlighting in a Text Area

Question:

Can multicolor text highlighting be achieved within a text area or text input?

Background:

Syntax highlighting is desired for keywords as a user types within a text input. The understanding is that this implementation requires a combination of CSS, JavaScript, and potential "pixie dust."

Solution:

Unfortunately, it is not possible to apply different colors to text within a text area or text input using CSS. Any modifications applied to the text property will affect the entire text within the element.

However, an editable element or document can provide the desired syntax highlighting functionality. This example, compatible with recent browsers, illustrates how to achieve it using the contenteditable attribute:

<br><code contenteditable="true"><br>  <span style="color: blue">var</span> foo = <span style="color: green">"bar"</span>;<br></code><br>

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