how to write function js code example

Example 1: declare function javascript

function myFunction(var1, var2) {
  return var1 * var2;
}

Example 2: how to use function in javascript

/* Declare function */
function myFunc(param) {
  // Statements 
}

Example 3: how to write a function javascript

// 3 ways you see it
function name(argument){ 
 return argument + 2
  //return something here
}
name(4) // equals 6

let name = function(arg){ return arg + 2}
name(4) //this equals 6, here we are calling our name function

//es6 style 

let name = (arg) => {return arg+ 2}
name(4) //equals 6