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<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
/*Data types
 *
 *There are simple and complex data types.
 *
 *Simple data types do not hold, collect, or aggregate other values.
 *
 *Numbers are numeric data.
 *Strings are character data.
 *Booleans are binary data, represented as true or false.
 *NaN is not a number. When operations are performed on undefined variables,
 * we get this falsey data type.
 *Undefined means that a variable has been declared, but has not been given
 * a value.
 *Null means no value. The old value has been nullified by a programmer.
 *Infinity represents mathematical infinity.
 *
 * Operators on primitives return new primitives: */

var numberFive = 5;
console.log(numberFive + 6);

/*Complex data types are objects, arrays, and functions. Objects can
 * contain any number of key:value pairs. Arrays can contain any number of
 * elements. Functions can encapsulate any number of statements. */

// Objects

var myObject = {
  key1: "value1",
  key2: "value2",
  key3: "value3"
}

// Objects can be modified elsewhere in code.

myObject.key4 = "value4";
console.log(myObject);

// Arrays are zero-indexed lists of data types.

var myArray = ["value1", "value2", "value3"];

// Arrays can also be modified elsewhere in code.

myArray.push("value4");
console.log(myArray);

// Functions are reusable blocks of code which perform operations when invoked.

function myFunction(a, b) {
  console.log(a + " " + b);
}

// Invocations

var firstName = "Mario";
var lastName = "the Plumber";
myFunction(firstName, lastName);
</script>


<script id="jsbin-source-javascript" type="text/javascript">/*Data types
 *
 *There are simple and complex data types.
 *
 *Simple data types do not hold, collect, or aggregate other values.
 *
 *Numbers are numeric data.
 *Strings are character data.
 *Booleans are binary data, represented as true or false.
 *NaN is not a number. When operations are performed on undefined variables,
 * we get this falsey data type.
 *Undefined means that a variable has been declared, but has not been given
 * a value.
 *Null means no value. The old value has been nullified by a programmer.
 *Infinity represents mathematical infinity.
 *
 * Operators on primitives return new primitives: */

var numberFive = 5;
console.log(numberFive + 6);

/*Complex data types are objects, arrays, and functions. Objects can
 * contain any number of key:value pairs. Arrays can contain any number of
 * elements. Functions can encapsulate any number of statements. */

// Objects

var myObject = {
  key1: "value1",
  key2: "value2",
  key3: "value3"
}

// Objects can be modified elsewhere in code.

myObject.key4 = "value4";
console.log(myObject);

// Arrays are zero-indexed lists of data types.

var myArray = ["value1", "value2", "value3"];

// Arrays can also be modified elsewhere in code.

myArray.push("value4");
console.log(myArray);

// Functions are reusable blocks of code which perform operations when invoked.

function myFunction(a, b) {
  console.log(a + " " + b);
}

// Invocations

var firstName = "Mario";
var lastName = "the Plumber";
myFunction(firstName, lastName);

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