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Functions

Function is a block of code that can perform a task JavaScript support multiple way to declare functions

function foo1(param1) {
  console.log("Inside foo1 functionwith params as: ", param1);
}

Anonymous function, this cannot be used without assignment as shown in function expression in the next example

function (param1) {
  console.log("Inside foo3 function with params as: ", param1);
};

var foo2 = function (param1) {
  console.log("Inside foo3 function with params as: ", param1);
};

(function(param1) {
  console.log("Inside foo4 function with params as: ", param1);
})();