Difference between Helper, RegisterHelper and RegisterBoundHelper?

Question

As the name implies, I'm looking for a difference in using the above helper creation functions with Ember.js.

• Helper (from Ember.js API docs):

  helper (name, function, dependKeys)

  Register a related helper or custom view helper.

  Example:

  Ember.Handlebars.helper('capitalize_h', function(value) {
    return value.toUpperCase();
  });
  

• RegisterHelper (From Handlebars.js):

  Example:

  Handlebars.registerHelper('capitalize_rh', function(value) {
    return value.toUpperCase();
  });
  

• RegisterBoundHelper (from Ember.js API docs):

  Example:

  Ember.Handlebars.registerBoundHelper('capitalize_rbh', function(value) {
    return value.toUpperCase();
  });
  

---

Using 3, I found that:

• Ember helpers (helper and registerBoundHelper) can also work on the model property,

  For instance:

  Assuming the model has a property name with a value of "Vageesh", so the following will provide the same result, that is, "VAGEESH":

  {{ capitalize_h name }} 
  

  and

  {{ capitalzie_rbh name }}
  

• Handlebars ' , .. "NAME":

  {{ capitalize_rh name }}
  

---

, ?

, ?

Answer 1

Ember.Handlebars.helper Ember.Handlebars.registerBoundHelper registerHelper handlebars EmberJS .

registerBoundHelper .

Bound helpers behave similarly to regular handlebars helpers, with the added ability to re-render when the underlying data changes.

Ember Handlebars Ember.Handlebars( , Handlebars), handlebars registerHelper, :

Ember.Handlebars.helper('myHelperName', function(property, options) {

});

registerHelper, , .

Answer 2

Ember.Handlebars.registerBoundHelper , .

Ember.Handlebars.registerHelper .

Ember.Handlebars.helper Ember.Handlebars.registerBoundHelper, Ember.Handlebars.registerHelper , . , Ember.Handlebars.helper Ember.Handlebars.registerHelper , Ember.Handlebars.registerBoundHelper. ( ), "" , "registerBoundHelper":

Ember.Handlebars.helper('capitalize_h', function(value) {
  return value.toUpperCase();
});

... , ...

Ember.Handlebars.registerBoundHelper('capitalize_h', function(value) {
  return value.toUpperCase();
});