[SalesForce] How is Bootstrap used in VisualForce Page

If you're using bootstrap within the native salesfore UI, you'll want to namespace all the bootstrap classes because there are some conflicts between the salesfore css and bootstrap.

See http://scottvonschilling.com/blog/2014/08/using-bootstrap-in-visualforce/ for an easy way to do this.

If you expect a simple solution with just a few lines of code you won't get it. A good lookup mechanism is internally not simple. But luckily thanks to the component mentioned by @eric the usage is simple.

But since there is a unmanaged package here

http://blogforce9dev-developer-edition.ap1.force.com/ProjectDetail?id=a0290000009KusM

you can install it in a developer org and have a look at the full source code. And also deploy it without any package just using eclipse later.