javascript

文章目錄

1. 1. Dojo Toolkit
   1. 1.1. dojo/on
   2. 1.2. Closure
   3. 1.3. Singleton

Dojo Toolkit

• with the 1.7 release Dojo adopted the Asynchronous Module Definition (AMD) format for its source code, allowing completely modular web application development.

• require enables you to load modules and use them, while define allows you to define your own modules. A module is typically a single JavaScript source file.

dojo/on

require(["dojo/on"], function(on){
  on(target, "event", function(e){ /* who, "what", how */
    // handle the event
  });
});

Closure

define(function(){
    var privateValue = 0;
    return {
        increment: function(){
            privateValue++;
        },

        decrement: function(){
            privateValue--;
        },

        getValue: function(){
            return privateValue;
        }
    };
});

Singleton

define(function(){
    var privateValue = 0;
    return {
        increment: function(){
            privateValue++;
        },

        decrement: function(){
            privateValue--;
        },

        getValue: function(){
            return privateValue;
        }
    };
});

Introduction to AMD Modules