Does IE11 Support CSS Variables? A Solution with Polyfills

Does IE11 Support CSS Variables? A Solution with Polyfill

IE11 lacks support for CSS variables, which can be a hindrance when developing websites across multiple browsers. However, there's a solution: polyfills.

What is a Polyfill?

A polyfill is a script that bridges the gap between browser capabilities, allowing unsupported features to be implemented.

CSS Variables Polyfill

For IE11, the "css-vars-ponyfill" is a reliable option for implementing CSS variables. It provides a client-side transformation of custom properties to static values.

Installation

The polyfill can be installed via GitHub, NPM, or directly from the demo page on Codepen.

Usage Example

Here's an example of how to use the polyfill to enable CSS variables in IE11:

<script src="css-vars-ponyfill.js"></script>
<style>
  :root {
    --primary-color: red;
  }
</style>
<p>This text will now be red.</p>

Features

• Transformation of root-level custom properties to static values
• Live updates of runtime values in modern and legacy browsers
• Support for chained and nested var() functions
• Lightweight and dependency-free

Limitations

• Limited to root-level custom property declarations
• Use of var() is restricted to property values

Conclusion

With the "css-vars-ponyfill," IE11 users can enjoy the full functionality of CSS variables. This allows for improved cross-browser compatibility and a consistent user experience across the web.

The above is the detailed content of Does IE11 Support CSS Variables? A Solution with Polyfills. For more information, please follow other related articles on the PHP Chinese website!