JavaScript基础对象创建模式之沙盘模式(026)

new Sandbox(function (box) {
    // your code here...
});

Sandbox([‘ajax‘, ‘event‘], function (box) {
    // console.log(box);
});

Sandbox(‘ajax‘, ‘dom‘, function (box) {
    // console.log(box);
});

Sandbox(‘*‘, function (box) {
    // console.log(box);
});
Sandbox(function (box) {
    // console.log(box);
});

Sandbox(‘dom‘, ‘event‘, function (box) {
    // work with dom and event
    Sandbox(‘ajax‘, function (box) {
       // another sandboxed "box" object
       // this "box" is not the same as
       // the "box" outside this function
       //...
       // done with Ajax
    });
    // no trace of Ajax module here
});

Sandbox.modules = {};
Sandbox.modules.dom = function (box) {
    box.getElement = function () {};
    box.getStyle = function () {};
    box.foo = "bar";
};
Sandbox.modules.event = function (box) {
    // access to the Sandbox prototype if needed:
    // box.constructor.prototype.m = "mmm";
    box.attachEvent = function () {};
    box.dettachEvent = function () {};
};
Sandbox.modules.ajax = function (box) {
    box.makeRequest = function () {};
    box.getResponse = function () {};
};

function Sandbox() {
        // turning arguments into an array
    var args = Array.prototype.slice.call(arguments),
        // the last argument is the callback
        callback = args.pop(),
        // modules can be passed as an array or as individual parameters
        modules = (args[0] && typeof args[0] === "string") ? args : args[0],
        i;
    // make sure the function is called
    // as a constructor
    if (!(this instanceof Sandbox)) {
        return new Sandbox(modules, callback);
    }
    // add properties to `this` as needed:
    this.a = 1;
    this.b = 2;
    // now add modules to the core `this` object
    // no modules or "*" both mean "use all modules"
    if (!modules || modules === ‘*‘) {
        modules = [];
        for (i in Sandbox.modules) {
            if (Sandbox.modules.hasOwnProperty(i)) {
                modules.push(i);
            }
        }
    }
    // initialize the required modules
    for (i = 0; i < modules.length; i += 1) {
        Sandbox.modules[modules[i]](this);
    }
    // call the callback
    callback(this);
}
// any prototype properties as needed
Sandbox.prototype = {
    name: "My Application",
    version: "1.0",
    getName: function () {
        return this.name;
    }
};