How Can I Style Specific Portions of an Input Field\'s Value with Different Colors?

Styling Portions of Input Field Values

Considering a scenario where an input field displays text in red, but a specific portion needs to be distinguished with blue color, this inquiry addresses the feasibility of achieving this stylistic effect.

Answer:

Unfortunately, CSS styling applies uniformly to the entire input element, preventing the selective alteration of a specific portion.

Solution:

To circumvent this limitation, a multi-element approach is necessary, dividing the input field into three logical sections:

• Before the point of editing (unedited portion)
• At the point of editing (currently edited portion)
• After the point of editing (remaining unedited portion)

This division cannot be achieved through a single input element, necessitating the use of JavaScript.

1. Initial Markup:
   Start with a standard unstyled input element. JavaScript will replace this input element with a stylized container element designed to resemble an input field.
2. Dynamic Wrapping:
   Implement JavaScript event handlers (e.g., click, keydown, keyup) to identify the three divisions. Wrap these portions in suitable HTML elements (e.g., ) and apply distinct styling as needed.

Example Markup:

<div class="input">
  <span class="nonEdited before">foo</span>
  <span class="edited">fizz</span>
  <span class="nonEdited after">bar</span>
</div>

Through this method, the desired effect of styling specific portions of the input field value can be achieved while maintaining the accessibility of the input field.

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