Value of this
in a node module:
this
in NodeJS global scope is the current module.exports object, not the global object. This is different from a browser where the global scope is the global window
object. Consider the following code executed in Node:
console.log(this); // logs {}
module.exports.foo = 5;
console.log(this); // log { foo:5 }
First we log an empty object because there are no values in module.exports
in this module. Then we put foo
on the module.exports
object, when we then again log this
we can see that it now logs the updated module.exports
object.
How can we access the global
object:
We can access the global
object in node using the global
keyword:
console.log(global);
The global
object exposes a variety of useful properties about the environment. Also this is the place where functions as setImmediate
and clearTimeout
are located.