Significance of defining custom methods to window object in javascript

Question

I am working on a project in javascript and while going through design pattern concepts came across following point. I have a sample code as below:

 window.customfun = (function(){}())

Here i have two questions: 1) Can we not simply define a global function as below:

customfun = (function(){}())

2) (function(){}()) is an anonymous function with its own evaluation environment but i have learnt that to be implemented as : (funtion(){})()see the position of parentheses around couple of parentheses. I found that both are working so i wanted to know if there is any difference between them?

score 1 · Accepted Answer · answered Aug 22 '17 at 06:44

1

Sure, you can define global functions
No, there is actually no difference.

Is there a difference: (1+(1)) === (1) + (1) ?

answered Aug 22 '17 at 06:44

webdeb

12,993
5
28
44

So this means function(){}() = (funtion(){})() = (function(){}()) ? – flamelite Aug 22 '17 at 06:49
1

@flamelite: https://stackoverflow.com/questions/1634268/explain-the-encapsulated-anonymous-function-syntax – Wiktor Zychla Aug 22 '17 at 06:52
Got your point thanks man :) – flamelite Aug 22 '17 at 06:56

Significance of defining custom methods to window object in javascript

1 Answers1