When a option from drop down is clicked, a form is created

I am trying to make a drop-down and whenever on option from a drop-down is clicked, a form should be made based on what an option is chosen. For example, there are 3 options on dropdown: name, text, drop-down. When a user click a text, a text form should be created below. Can some help me giving some snippet of codes?

(I am also trying to use ember.js, but pure html is okay!)