Bootstrap Modal immediately disappearing

Question

I\'m working on a website using bootstrap.

Basically, I wanted to use a modal in the home page, summoned by the button in the Hero Unit.

Button code:

Answer 1

Same symptom, in the context of a Rails application with Bootstrap provided by the bootstrap-sass gem, and @merv's answer put me on the right track.

My application.js file had the following:

//= require bootstrap
//= require bootstrap-sprockets

The fix was to remove one of the two lines. Indeed, the gem's readme warns you about this error. My bad.