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Why do we use a plus sign in front of function name in JavaScript?
The +function() {} notation is primarily used to force the parser to treat whatever follows the + as an expression. This is used for functions that are invoked immediately, for example,
+function() { alert("Demo!"); }();However, + before a function is one of the symbols. You can add other options also like !, -, ~, also. Parentheses can also be used as shown below −
(function() { alert("Demo!"); })();You can also use it like this −
(function() { alert("Demo!"); }());
Updated on: 12-Jun-2020
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