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JavaScript

Posted by tal Shnitzer
tal Shnitzer
Courses Plus Student 5,242 Points

module pattern workshop: I don't understand the syntax of the module pattern.

unfortunately in the video it is just given but not explained. there are the "()" that wraps the whole function what does it mean? there are "()" after the function curly brackets. what does it do?

(function(){ 


}());

thanks

1 Answer

Steven Parker
Steven Parker
243,656 Points
Steven Parker
Steven Parker
243,656 Points

This construct is known as an "IIFE" (Immediately Invoked Function Expression). The pair of parentheses at the end cause the anonymous function that was just defined to be invoked ("called"). The parentheses that wrap the whole thing cause it be taken as an expression (which can be invoked) instead of a definition statement (which cannot).