RequireJS:如何定义构造函数? [英] RequireJS: How to define a constructor?

问题描述

我想根据AMD规范创建构造函数.我找到了此答案，并尝试遵循它.这就是我最终得到的:

I want to create constructors according to the AMD specification. I found this answer and tried to follow it. Here's what I ended up with:

requirejs.config({

    paths: {
        'jquery': 'vendor/jquery-1.9.1.min',
        'lodash': 'vendor/lodash-1.3.1.min',
        'knockout': 'vendor/knockout-2.2.1.min',
        'bootstrap': 'vendor/bootstrap-2.3.2.min'
    }
});

requirejs(
    ['jquery', 'lodash', 'knockout', 'controller/categories'], 
    function main($,_,ko, CategoriesCtrl) {

        var categories = new CategoriesCtrl();

    }
);

controller/categories.js

define('categories', function() {

    return function CategoriesCtrl(layers) {

        var self = this;
        layers = layers || [];

        console.log(ko);

    };
});

我得到的结果是CategoriesCtrl是未定义的.我做错了什么?

The result I get is that CategoriesCtrl is undefined. What have I done wrong?

推荐答案

您已创建一个名为AMD模块，方法是将您的第一个参数设为define 'categories'.最好在可能的情况下避免这种情况:

You have created a named AMD module by making your first argument to define 'categories'. It's best to avoid this where possible:

您可以自己显式命名模块，但这会使模块 便携式性较差-如果将文件移动到另一个目录，您将 需要更改名称.通常最好避免使用名称编码 的模块，然后让优化工具在模块中刻录 名称.

You can explicitly name modules yourself, but it makes the modules less portable -- if you move the file to another directory you will need to change the name. It is normally best to avoid coding in a name for the module and just let the optimization tool burn in the module names.

尝试将categories.js调整为此:

define(function() {

    return function CategoriesCtrl(layers) {

        // etc

    };
});

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