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                <script src=""></script>
<nav id="navbar">
  <header>JS Documentation</header>
    <li><a class="nav-link" href="#Introduction">Introduction</a></li>
    <li><a class="nav-link" href="#Javascript_and_Java">Javascript and Java</a></li>
    <li><a href="#Helo_World" class="nav-link">Helo World</a></li>
    <li><a href="#Variables" class="nav-link">Variables</a></li>
    <li><a href="#Declaring_variables" class="nav-link">Declaring variables
    <li><a href="#Global_variables" class="nav-link">Global variables</a></li>
    <li><a href="#Data_types" class="nav-link">Data types</a></li>
    <li><a href="#if...else_statement" class="nav-link">if...else statement</a></li>
<main id="main-doc">
  <section class="main-section" id="Introduction">
    <p>JavaScript is a cross-platform, object-oriented scripting language. It is a small and lightweight language. Inside a host environment (for example, a web browser), JavaScript can be connected to the objects of its environment to provide programmatic control over them.</p>
    <p>JavaScript contains a standard library of objects, such as Array, Date, and Math, and a core set of language elements such as operators, control structures, and statements. Core JavaScript can be extended for a variety of purposes by supplementing it with additional objects; for example:</p>
    <p>* Client-side JavaScript extends the core language by supplying objects to control a browser and its Document Object Model (DOM). For example, client-side extensions allow an application to place elements on an HTML form and respond to user events such as mouse clicks, form input, and page
    <p>* Server-side JavaScript extends the core language by supplying objects relevant to running JavaScript on a server. For example, server-side extensions allow an application to communicate with a database, provide continuity of information from one invocation to another of the application, or perform file manipulations on a server.</p>
  <section class="main-section" id="Javascript_and_Java">
    <header>Javascript and Java</header>
    <p>JavaScript and Java are similar in some ways but fundamentally different in some others. The JavaScript language resembles Java but does not have Java's static typing and strong type checking. JavaScript follows most Java expression syntax, naming conventions and basic control-flow constructs which was the reason why it was renamed from LiveScript to JavaScript.</p>
    <p>In contrast to Java's compile-time system of classes built by declarations, JavaScript supports a runtime system based on a small number of data types representing numeric, Boolean, and string values. JavaScript has a prototype-based object model instead of the more common class-based object model. The prototype-based model provides dynamic inheritance; that is, what is inherited can vary for individual objects. JavaScript also supports functions without any special declarative requirements. Functions can be properties of objects, executing as loosely typed methods.</p>
    <p>avaScript is a very free-form language compared to Java. You do not have to declare all variables, classes, and methods. You do not have to be concerned with whether methods are public, private, or protected, and you do not have to implement interfaces. Variables, parameters, and function return types are not explicitly typed.</p>
  <section class="main-section" id="Helo_World">
    <header>Helo World</header>
  <p>To get started with writing JavaScript, open the Scratchpad and write your first "Hello world" JavaScript code:</p>
  <code>function greetMe(yourName) { alert("Hello " + yourName); }
  <p>Select the code in the pad and hit Ctrl+R to watch it unfold in your browser!</p>
  <section class="main-section" id="Variables">
    <p>You use variables as symbolic names for values in your application. The names of variables, called identifiers, conform to certain rules</p>
    <p>A JavaScript identifier must start with a letter, underscore (_), or dollar sign ($); subsequent characters can also be digits (0-9). Because JavaScript is case sensitive, letters include the characters "A" through "Z" (uppercase) and the characters "a" through "z" (lowercase).</P>
  <section class="main-section" id="Declaring_variables">
    <header>Declaring variables</header>
    <p>You can declare a variable in three ways:
      With the keyword var. For example,</p><code>
    var x = 42.</code>
This syntax can be used to declare both local and global variables.

    <p>By simply assigning it a value. For example,</p>
    <code>x = 42.</code>
<p>This always declares a global variable. It generates a strict JavaScript warning. You shouldn't use this variant.</p>

<p>With the keyword let. For example,</p>
    <code>let y = 13.</code>
    <p>This syntax can be used to declare a block scope local variable. See Variable scope below.</p>
  <section class="main-section" id="Global_variables">
    <header>Global variables</header>
    <p>Global variables are in fact properties of the global object. In web pages the global object is window, so you can set and access global variables using the window.variable syntax.</p>
    <p>Consequently, you can access global variables declared in one window or frame from another window or frame by specifying the window or frame name. For example, if a variable called phoneNumber is declared in a document, you can refer to this variable from an iframe as parent.phoneNumber.</p>
<section class="main-section" id="Data_types">
  <header>Data types</header>
    The latest ECMAScript standard defines seven data types: </p>
      Six data types that are primitives:
      <ul><li>Boolean. true and false.</li>
        <li>null. A special keyword denoting a null value. Because JavaScript is case-sensitive, null is not the same as Null, NULL, or any other variant.</li><li>undefined. A top-level property whose value is undefined.</li><li>Number. 42 or 3.14159.</li><li>String. "Howdy"</li>
        <li>Symbol (new in ECMAScript 2015). A data type whose instances are unique and immutable.</li>
      <li>and Object</li>
<section class="main-section" id="if...else_statement">
<header>if...else statement</header>
<p>Use the if statement to execute a statement if a logical condition is true. Use the optional else clause to execute a statement if the condition is false. An if statement looks as follows:</p>
  if (condition) { statement_1; } else { statement_2; }</code>
<p>condition can be any expression that evaluates to true or false. See Boolean for an explanation of what evaluates to true and false. If condition evaluates to true, statement_1 is executed; otherwise, statement_2 is executed. statement_1 and statement_2 can be any statement, including further nested if statements.</p>
<p>You may also compound the statements using else if to have multiple conditions tested in sequence, as follows:</p>

<code>if (condition_1) { statement_1; } else if (condition_2) { statement_2;
  } else if (condition_n) { statement_n; } else { statement_last; }</code>
<p>In the case of multiple conditions only the first logical condition which evaluates to true will be executed. To execute multiple statements, group them within a block statement ({ ... }) . In general, it's good practice to always use block statements, especially when nesting if statements:</p>
<code>if (condition) { statement_1_runs_if_condition_is_true;
statement_2_runs_if_condition_is_true; } else {
  statement_4_runs_if_condition_is_false; }</code>
<p>It is advisable to not use simple assignments in a conditional expression, because the assignment can be confused with equality when glancing over the code. For example, do not use the following code:<p/>
<code>if (x = y) { /* statements here */ }</code>
<p>If you need to use an assignment in a conditional expression, a common practice is to put additional parentheses around the assignment. For example:</p>
<code>if ((x = y)) { /* statements here */ }</code>



                body {
  min-width: 290px;
  color: #616161;
  background-color: #E0E0E0;
  font-family: font-family: Roboto, sans-serif; 
  line-hieght: 1.4;

#navbar {
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  min-width: 290px;
  top: 0px;
  left: 0px;
  width: 300px;
  height: 100%;
  border-right: solid;
  border-color: rgba(0, 25, 25, 0.6);

header {
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  font-size: 2.0em;

#main-doc header {
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#navbar ul {
  height: 100%;
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#navbar li {
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#navbar a {
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  font-size: 1.3em;

#main-doc {
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  padding: 60px;
  margin-bottom; 200px;
section article {
  color: #212121;
  margin: 15px;
  font-size: 0.96em;
  line-height: 2;

section li {
  margin: 15px 0px 0px 20px;

code {
  display: block;
  text-align: left;
  word-break: normal;
  word-wrap: normal;
  position: relative;
  white-space: pre;
  line-height: 3;
  padding: 15px;
  margin: 10px;
  border-radius: 5px;
  background-color: black;

@media only screen and (max-width: 815px) {
  #navbar ul {
    border: 1px solid;
    height: 207px;

  #navbar {
    background-color: white;
    position: absolute;
    top: 0;
    padding: 0;
    margin: 0;
    width: 100%;
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  #main-doc {
    position: relative;
    margin-left: 0px;
    margin-top: 270px;

@media only screen and (max-width: 400px) {
  #main-doc {
    margin-left: -10px;

  code {
    margin-left: -20px;
    width: 100%;
    padding: 15px;
    padding-left: 10px;
    padding-right: 45px;
    min-width: 233px;



                // !! IMPORTANT README:

// You may add additional external JS and CSS as needed to complete the project, however the current external resource MUST remain in place for the tests to work. BABEL must also be left in place. 

  - Select the project you would 
    like to complete from the dropdown 
  - Click the "RUN TESTS" button to
    run the tests against the blank 
  - Click the "TESTS" button to see 
    the individual test cases. 
    (should all be failing at first)
  - Start coding! As you fulfill each
    test case, you will see them go   
    from red to green.
  - As you start to build out your 
    project, when tests are failing, 
    you should get helpful errors 
    along the way!

// PLEASE NOTE: Adding global style rules using the * selector, or by adding rules to body {..} or html {..}, or to all elements within body or html, i.e. h1 {..}, has the potential to pollute the test suite's CSS. Try adding: * { color: red }, for a quick example!

// Once you have read the above messages, you can delete all comments.