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For the sake of clarity for readers who may want to use an assignment with an immediately invoked function your example code var myVar = !function(){ return false; }() could omit the ! like var myVar = function(){ return false; }() and the function will execute correctly and the return value will be untouched.

Mark Fox
– Mark Fox

2013-03-11 00:55:10 +00:00
Commented Mar 11, 2013 at 0:55
1

To be clear, you can use it once to coerce to Boolean, because it's a logical not operator. !0 = true, and !1 = false. For JavaScript minification purposes, you'd want to replace true with !0 and false with !1. It saves 2 or 3 characters.

Triynko
– Triynko

2015-07-26 01:07:39 +00:00
Commented Jul 26, 2015 at 1:07

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