javascript - How to understand this jquery function -

this question has answer here:

• a simple question on jquery closure 6 answers
• what (function($) {})(jquery); mean? 4 answers

what mean?:

 (function($){    })(jquery); 

and reason use it? thanks.

you creating new scope in javascript using function (as {} not create new scope). calling function , capturing jquery outer scope , make available inside variable $