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Chapter 23. Building Reusable Components > Introducing CFML Custom Tags

Introducing CFML Custom Tags

The UDF framework introduced in Chapter 22 is probably the easiest and most straightforward way to extend the language. That said, the most flexible way to extend ColdFusion is by creating your own tags. Like UDFs, custom tags let you add your own tags to the CFML language, for whatever purpose you want. Unlike UDFs, the custom tag framework has been around since ColdFusion 3.0, and has become a rich and mature part of the product. As of this writing, there are many more custom tags than UDFs. Custom tags excel at encapsulating concepts and processes and are the bedrock of many existing ColdFusion applications.


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