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<html>
<head>
<meta name="description" content="What are function?">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Functions</title>
</head>
<body>

<script id="jsbin-javascript">
/* Functions
   Functions are blocks of code designed to perform a task. A function defenition
   consists of a function name, parameters to the function, and statements that define
   the function.
*/

// 1. Declaration and definition
      function myName(myParameter) { // my function name and parameters in (). This is how we input data.
        return myStatement = myParameter; // my statement
      }
      console.log(myName("argument")); // calling the function and argument for our parameter

// The parameter in our function is simply a placeholder for our value passed through our argument
// when we call the function.

// 2. We can also assign function to variables

     var myFunc = function(str, str2){return str + " " + str2}; // we use return when we want a value out of our function
     console.log(myFunc("Hello", "World"));

// Function scope and Closure
// In the example below we show we can access globally scoped variables in our function

   function randomNum() {
    var myNum = Math.floor(Math.random()*10); // This will give me a random number value between 1 and 10
    return myNum; //The variable is in our local scope
  }
   var random = randomNum(); //Value of function stored globaly

   function test(ran){
     newNum = ran + 5;
     return newNum;
   }

   console.log(random);
   console.log(test(random)); //invoking our stored function value to the test function
   console.log(newNum);
</script>


<script id="jsbin-source-javascript" type="text/javascript">/* Functions
   Functions are blocks of code designed to perform a task. A function defenition
   consists of a function name, parameters to the function, and statements that define
   the function.
*/

// 1. Declaration and definition
      function myName(myParameter) { // my function name and parameters in (). This is how we input data.
        return myStatement = myParameter; // my statement
      }
      console.log(myName("argument")); // calling the function and argument for our parameter

// The parameter in our function is simply a placeholder for our value passed through our argument
// when we call the function.

// 2. We can also assign function to variables

     var myFunc = function(str, str2){return str + " " + str2}; // we use return when we want a value out of our function
     console.log(myFunc("Hello", "World"));

// Function scope and Closure
// In the example below we show we can access globally scoped variables in our function

   function randomNum() {
    var myNum = Math.floor(Math.random()*10); // This will give me a random number value between 1 and 10
    return myNum; //The variable is in our local scope
  }
   var random = randomNum(); //Value of function stored globaly

   function test(ran){
     newNum = ran + 5;
     return newNum;
   }

   console.log(random);
   console.log(test(random)); //invoking our stored function value to the test function
   console.log(newNum);


</script></body>
</html>