How To Create JavaScript Function

How To Create JavaScript Function 

Use Keyword "function" to create function with parameter or parameter less.

see the example as below.

e.g.:- 1 - Parameter Less Function

function sum(){

let a =5;

let b=10;

let c=a+b;

console.log(c);

}

e.g.:- 2 - Parameter Function

function sum(a,b){

let c=a+b;

console.log(c);

}

e.g :- 3 - Function As Expression

var sum = function(a,b){

let c= a+b;

return c;

}

let  output =sum(5,10);

console.log(output );

e.g :- 4 - Arrow Function

let sum = (a,b) => a+b;

let  output =sum(5,10);

console.log(output);