extendBackbone.View.extend(properties, [classProperties])  Get started with views by creating a custom view class. You'll want to override the render function, specify your declarative events, and perhaps the tagName, className, or id of the View's root element. 
var DocumentRow = Backbone.View.extend({
  tagName: "li",
  className: "document-row",
  events: {
    "click .icon":          "open",
    "click .button.edit":   "openEditDialog",
    "click .button.delete": "destroy"
  },
  ini