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Javascript questions from Bootstrap

 
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Hi, I've read through most of W3School lessons for Javascript and jQuery but I'm still unable to understand the following.



What is "+function ($)" doing? On StackExchange someone says it's loading immediately? All the functions are declared like that in the file. Why do you want to load everything?

Why does the function end with "}(jQuery);"? Not sure what the extra "(jQuery)" doing after the closing curly brace?
 
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The "+' notation forces the following function to be evaluated as an expression, and the trailing (jQuery) causes the function to be executed with jQuery as its argument. Note that within the function, this is assigned to $ via the parameter list of the function.

This is called an "immediate function" because it is declared and executed at the same time ("immediately").

The notation more commonly used for this is:but some people prefer the "+" notation.
 
Mike Cheung
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Bear Bibeault wrote:The "+' notation forces the following function to be evaluated as an expression, and the trailing (jQuery) causes the function to be executed with jQuery as its argument. Note that within the function, this is assigned to $ via the parameter list of the function.

This is called an "immediate function" because it is declared and executed at the same time ("immediately").

The notation more commonly used for this is:but some people prefer the "+" notation.


Ah I see and thanks for highlighting the term "immediate function", which I have been able to look up successfully on Google and found the following excellent article.
http://blog.kevinchisholm.com/javascript/javascript-immediate-functions-basics/
 
Bear Bibeault
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You can also find extensive discussion in chapters 3 and 4 of Secrets of the JavaScript Ninja

Immediate functions are very useful for creating enclosed scopes.
 
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