javascript - How do I get global scope inside define function? - Stack Overflow

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Can you get global scope while using strict mode and also making sure that you can run on non window environment.

See these examples:

define(['other', 'thing'], function() {
    // this === window in desktop environment
    // this === GLOBAL in node environment
});
define(['other', 'thing'], function() {
    "use strict";
    // this === undefined in desktop environment
    // this === GLOBAL in node environment
    // As of my understanding node has to be configured using `node --use_strict`
    // ()
    // But that not the point.
});

Is there any way to get the global variable (window/GLOBAL) inside define.

Can you get global scope while using strict mode and also making sure that you can run on non window environment.

See these examples:

define(['other', 'thing'], function() {
    // this === window in desktop environment
    // this === GLOBAL in node environment
});
define(['other', 'thing'], function() {
    "use strict";
    // this === undefined in desktop environment
    // this === GLOBAL in node environment
    // As of my understanding node has to be configured using `node --use_strict`
    // (http://stackoverflow./questions/9031888/any-way-to-force-strict-mode-in-node)
    // But that not the point.
});

Is there any way to get the global variable (window/GLOBAL) inside define.

• javascript
• scope
• requirejs
• global-variables
• requirejs-define

Share Improve this question Follow edited Mar 29, 2015 at 17:11 Artjom B. 62k2525 gold badges135135 silver badges229229 bronze badges asked Jun 5, 2013 at 9:57 Andreas LouvAndreas Louv 47.1k1313 gold badges107107 silver badges126126 bronze badges 1

• Possibly duplicate of: stackoverflow./q/8280137/783743 – Aadit M Shah Commented Jun 13, 2013 at 6:06

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5 Answers 5

Sorted by: Reset to default 8 +100

var global = Function("return this")();

If you don't have access to Function, then also try

var Function = function(){}.constructor,
    global = Function("return this")();

This may or may not help, but I did e up with a way to override the context of requirejs modules using the following code...

require.s.contexts._.execCb = function(name, callback, args) {
    return callback.apply(/* your context here */, args);
};

Again, not sure if that'll help with use strict and all, but who knows... :)

https://gist.github./jcreamer898/5685754

What i have e op with so far:

(function(root) { // Here root refers to global scope
    define('mything', ['other', 'thing'], function() {

    });
}(this);

But then I can't use r.js to minify my application.

And another could be to check what to use:

define(['other', 'thing'], function() {
    var root = typeof GLOBAL != 'undefined' ? GLOBAL : window;
});

Yet another way it to define a global file which returns the global:

global.js:

define(function() {
    return typeof GLOBAL != 'undefined' ? GLOBAL : window;
});

mything.js

define(['global', 'other', 'thing'], function(root) {
    // root === window/GLOBAL
});

But I don't like these way because what if some 3. global variable is introduced this will break, or if the user in a browser environment defines GLOBAL then that will be returned.

I would like to see if anyone have e up with a smarter way.

What if you stored the window reference on another universally accessible object, such as Object.prototype or something along those lines?

This is what I usually do (it works for browsers, node.js and RingoJS - even in strict mode):

if (!global) var global = this;

define(['other', 'thing'], function() {
    // use global
});

define(['other', 'thing'], function() {
    "use strict";
    // use global
});

Read the following StackOverflow thread for more details: Defining an implementation independent version of the global object in JavaScript

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