I was reading JS sources from Twitter — on my way to improve my JS knowledge base, when I came across the strange way of calling anonymous function:

!function( $ ) {
    ...
}( window.jQuery );

... and this works! :)

It's obvious to everyone, that this:

function ( $ ) { ... } ( window.jQuery )

does not work (Syntax error), while this one is correct:

(function ( $ ) { .... })( window.jQuery )

Can anyone please explain this magic (why case with !function works)?

javascript anonymous-function
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