Deprecated CSS Expressions: Should You Use Them?
Despite their deprecation and advised avoidance, CSS expressions have left a legacy in web design, sparking questions about their former utility. This article explores their limitations and introduces viable alternatives.
Unveiling the Deprecation of CSS Expressions
CSS expressions were once a feature employed in Internet Explorer browsers. However, they were abandoned in IE8 and subsequent versions due to concerns over compliance, performance, and security. The IE blog entry "Ending Expressions" elaborately explains this decision.
Assessing the Suitability of CSS Expressions
Given their deprecation, it's advisable to abstain from using CSS expressions. Modern techniques such as JavaScript or media queries offer more reliable and standards-compliant solutions.
Alternatives for Persistent Screen Positioning
Your example of keeping a floating element fixed on the screen can be achieved with the CSS property "position: fixed." This option is unavailable in IE6 but widely supported in other browsers.
Additional Benefits of Expressions
While expressions are obsolete for most purposes, they have occasionally found use in solving specialized design challenges. However, they should be treated as a legacy solution rather than a recommended approach.
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