Backbone.js访问另一个视图函数

Question

I'm developing an application with Backbone.js

I have 2 view and I want use a function defined in other view:

var FormView = Backbone.View.extend({
  initialize: function(){
    resultsView.myFunction();
  }

})


var resultsView = Backbone.View.extend({
  myFunction: function(){
    alert('test')
  }
})

How I can do it?

Answer 1

You're doing it the opposite way. You can do a base view that other views can extend and implement such as:

/** Any Views that inherit from this View can use the myFunction() */
var BaseView = Backbone.View ({
  myFunction : function(param) {
      alert(param);
  }
});

/** Inherit from the base view above */
var ChildView = BaseView.extend({
  initialize : function(){
      this.myFunction('test');
  }
});

var instanceView = new ChildView({});

Answer 2

why not use events?

routing-and-the-event-aggregator-coordinating

Answer 3

When you use Backbone.View.extend , you are creating a class . In order to use the class, you need to create an instance using the new operator. It's conventional to start class names with a Capital letter, and instance variable names with a small letter, so I'll use that naming convention in the following samples:

//declare view class
var ResultsView = Backbone.View.extend({
  myFunction: function(){
    alert('test')
  }
});

Create an instance of the class, and pass it into your FormView :

var resultsView = new ResultsView();
var formView = new FormView({ resultsView: resultsView });

Access the passed argument in the FormView.initialize :

var FormView = Backbone.View.extend({
  initialize: function(options){
    options.resultsView.myFunction();
  }
});