Node.js: Global Objects

At the time of writing this tutorial, below are the global objects, functions available in global space. These global objects are accessible by all the modules of node.js API.

a.   Class: Buffer

b.   __dirname

c.   __filename

d.   clearImmediate(immediateObject)

e.   clearInterval(intervalObject)

f.    clearTimeout(timeoutObject)

g.   console

h.   exports

i.     global

j.    module

k.   process

l.     require()

m. setImmediate(callback[,...args])

n.   setInterval(callback,delay[, ...args])

o.    setTimeout(callback, delay[, ...args])

p.   URL

q.   URLSearchParams

Let me explain with an example.

HelloWorld.js

global.console.log("Welcome to node.js programming")

C:\Users\krishna\Documents\nodejs\examples>node HelloWorld.js
Welcome to node.js programming

Since global namespace is available for all the node.js modules, you can directly refer console in your source code.

HelloWorld.js

console.log("Welcome to node.js programming")

Note

a.   You do not need to include the global name space explicitly, it is included by default in all the modules.

I will cover all the global objects in my later posts.

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