Auto complete tag like Stack Overflow [duplicate]

Question

What is the idea behind implementing a tagging system like Stack Overflow? This is a question for the front-end implementation of it. What are some libraries that are available out there that will allow me to create a front-end tagging system with auto-complete and tag separator like the one Stack Overflow/pivotal tracker uses?

Answer 1

jQuery UI autocomplete is a good start. Here is the documentation on using multiple values with it. I've used this plugin in several projects for a variety of purposes, including a tagging UI.

Of course, you need a handler to receive the selected values, but that's pretty trivial with AJAX. Your question was about front-end implementation, so I assume you have your back-end data structures covered.