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<!------------------------------------------->
<h1 id="prep-work">Prep-Work</h1>
<h1 id="notes"><strong>Notes</strong></h1>
<h2 id="how-to-learn-effectively"><strong>How to learn effectively</strong></h2>
<p><strong>Learning</strong>: The acquisition of skills and the ability to apply them in the future.</p>
<p><strong>What makes an Effective learner?</strong></p>
<ul>
<li>They are active listeners.</li>
<li>They are engaged with the material.</li>
<li>They are receptive of feedback.</li>
<li>They are open to difficulty.</li>
</ul>
<p><strong>Why do active learning techniques feel difficult?</strong></p>
<ul>
<li>It feels difficult because you are constantly receiving feedback, and so you are constantly adapting and
perfecting the material.</li>
</ul>
<p><strong>Desirable Difficulty</strong></p>
<ul>
<li>The skills we wish to obtain is often a difficult one.</li>
<li>We want challenging but possible lessons based on current level of skill.</li>
</ul>
<p><strong>Effective learners space their practice</strong></p>
<ul>
<li>Consistent effort > cramming => for <strong>durable knowledge</strong></li>
</ul>
<hr>
<h2 id="hello-world"><strong>Hello World</strong></h2>
<ul>
<li>
<p><strong>console.log</strong> : command used to print something onto the screen.</p>
</li>
<li><strong>syntax</strong> : the exact arrangement of the symbols, characters, and keywords in our code.</li>
<li><strong>//</strong> : notation for creating a code comment in JS.</li>
<li>
<p><strong>code comment</strong> : useful for annotating pieces of code to explain how something works,
ignored by computer.</p>
</li>
</ul>
<blockquote>
<p>“Simplicity is prerequisite for reliability.” – Edsger W. Dijkstra</p>
</blockquote>
<hr>
<h2 id="the-number-data-type"><strong>The Number Data Type</strong></h2>
<p>The <strong>number</strong> data type in JS is used to represent any numerical values, including integers and
decimal numbers.</p>
<p><strong>Basic Arithmetic Operators</strong></p>
<p>Operators are the symbols that perform particular operations.</p>
<ul>
<li><strong>+</strong> (addition)</li>
<li><strong>-</strong> (subtraction)</li>
<li><strong>asterisk</strong> (multiplication)</li>
<li><strong>/</strong> (division)</li>
<li><strong>%</strong> (modulo)</li>
</ul>
<p>JS evaluates more complex expressions using the general math order of operations aka PEMDAS.</p>
<ul>
<li><strong>PEMDAS</strong> : Parentheses, Exponents, Multiplication, Division, Modulo, Addition, Subtraction.
</li>
<li><em>To force a specific order of operation, use the group operator ( ) around a part of the
expression.</em></li>
</ul>
<p><strong>Modulo</strong> : Very useful operation to check divisibility of numbers, check for even & odd,
whether a number is prime, and much more! <em>(Discrete Math concept, circular problems can be solved with
modulo)</em></p>
<ul>
<li>
<p>Whenever you have a smaller number % a larger number, the answer will just be the initial small number.
</p>
<div class="sourceCode" id="cb1">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="0"><code class="sourceCode javascript"><a class="sourceLine" id="cb1-1" title="1"><span class="va">console</span>.<span class="at">log</span>(<span class="dv">7</span> <span class="op">%</span> <span class="dv">10</span>)<span class="op">;</span> <span class="co">// => 7;</span></a></code></pre>
</div>
</li>
</ul>
<hr>
<h2 id="the-string-data-type"><strong>The String Data Type</strong></h2>
<p>The <strong>string</strong> data type is a primitive data type that used to represent textual data.</p>
<ul>
<li>can be wrapped by either <strong>single</strong> or <strong>double</strong> quotation marks, <em>best to
choose one and stick with it for consistency</em>.</li>
<li>
<p>If your string contains quotation marks inside, can layer single or double quotation marks to allow it to
work.</p>
<div class="sourceCode" id="cb2">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="1"><code class="sourceCode javascript"><a class="sourceLine" id="cb2-1" title="1"><span class="st">"That's a great string"</span><span class="op">;</span> (valid)</a>
<a class="sourceLine" id="cb2-2" title="2"></a>
<a class="sourceLine" id="cb2-3" title="3"><span class="st">'Shakespeare wrote, "To be or not to be"'</span><span class="op">;</span> (valid)</a>
<a class="sourceLine" id="cb2-4" title="4"></a>
<a class="sourceLine" id="cb2-5" title="5"><span class="st">'That'</span>s a bad string<span class="st">'; (invalid)</span></a></code></pre>
</div>
<ul>
<li>Alt. way to add other quotes within strings is to use template literals.</li>
</ul>
<div class="sourceCode" id="cb3">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="2"><code class="sourceCode javascript"><a class="sourceLine" id="cb3-1" title="1"><span class="vs">`This is a temp'l'ate literal </span><span class="sc">${</span><span class="kw">function</span><span class="sc">}</span><span class="vs">`</span> <span class="co">// use ${} to invoke functions within.</span></a></code></pre>
</div>
</li>
<li><strong>.length</strong> : property that can be appended to data to return the length.
<ul>
<li>empty strings have a length of zero.</li>
</ul>
</li>
<li>
<p><strong>indices</strong> : indexes of data that begin at 0, can call upon index by using the bracket
notation [ ].</p>
<div class="sourceCode" id="cb4">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="3"><code class="sourceCode javascript"><a class="sourceLine" id="cb4-1" title="1"><span class="va">console</span>.<span class="at">log</span>(<span class="st">"bootcamp"</span>[<span class="dv">0</span>])<span class="op">;</span> <span class="co">// => "b"</span></a>
<a class="sourceLine" id="cb4-2" title="2"><span class="va">console</span>.<span class="at">log</span>(<span class="st">"bootcamp"</span>[<span class="dv">10</span>])<span class="op">;</span> <span class="co">// => "undefined"</span></a>
<a class="sourceLine" id="cb4-3" title="3"><span class="va">console</span>.<span class="at">log</span>(<span class="st">"boots"</span>[<span class="dv">1</span> <span class="op">*</span> <span class="dv">2</span>])<span class="op">;</span> <span class="co">// => "o"</span></a>
<a class="sourceLine" id="cb4-4" title="4"><span class="va">console</span>.<span class="at">log</span>(<span class="st">"boots"</span>[<span class="st">"boot"</span>.<span class="at">length</span> <span class="op">-</span> <span class="dv">1</span>])<span class="op">;</span> <span class="co">// => "t"</span></a></code></pre>
</div>
<ul>
<li>we can pass expressions through the brackets as well since JS always evaluates expressions first.</li>
</ul>
</li>
<li>The index of the last character of a string is always one less than it’s length.</li>
<li>
<p><strong>indexOf()</strong> : method used to find the first index of a given character within a string.
</p>
<div class="sourceCode" id="cb5">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="4"><code class="sourceCode javascript"><a class="sourceLine" id="cb5-1" title="1"><span class="va">console</span>.<span class="at">log</span>(<span class="st">"bagel"</span>.<span class="at">indexOf</span>(<span class="st">"b"</span>))<span class="op">;</span> <span class="co">// => 0</span></a>
<a class="sourceLine" id="cb5-2" title="2"><span class="va">console</span>.<span class="at">log</span>(<span class="st">"bagel"</span>.<span class="at">indexOf</span>(<span class="st">"z"</span>))<span class="op">;</span> <span class="co">// => -1</span></a></code></pre>
</div>
<ul>
<li>if the character inside the indexOf() search does not exist in the string, the output will be -1.</li>
<li>the indexOf() search will return the first instanced index of the the char in the string.</li>
<li><strong>concatenate</strong> : word to describe joining strings together into a single string.</li>
</ul>
</li>
</ul>
<hr>
<h2 id="the-boolean-data-type"><strong>The Boolean Data Type</strong></h2>
<p>The <strong>boolean</strong> data type is the simplest data type since there are only two values:
<strong>true</strong> and <strong>false</strong>.</p>
<ul>
<li>
<p><strong>Logical Operators</strong> (B<em>oolean Operators</em>) are used to establish logic in our code.
</p>
<ul>
<li>
<p><strong>!</strong> (not) : reverses a boolean value.</p>
<div class="sourceCode" id="cb6">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="5"><code class="sourceCode javascript"><a class="sourceLine" id="cb6-1" title="1"><span class="va">console</span>.<span class="at">log</span>(<span class="op">!</span><span class="kw">true</span>)<span class="op">;</span> <span class="co">// => false</span></a>
<a class="sourceLine" id="cb6-2" title="2"><span class="va">console</span>.<span class="at">log</span>(<span class="op">!!</span><span class="kw">false</span>)<span class="op">;</span> <span class="co">// => false</span></a></code></pre>
</div>
</li>
<li>
<p><strong>&&</strong> (and) <strong>Truth Table</strong></p>
<table>
<thead>
<tr class="header">
<th>Input</th>
<th>Input</th>
<th>Output</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>T</td>
<td>T</td>
<td>T</td>
</tr>
<tr class="even">
<td>T</td>
<td>F</td>
<td>F</td>
</tr>
<tr class="odd">
<td>F</td>
<td>T</td>
<td>F</td>
</tr>
<tr class="even">
<td>F</td>
<td>F</td>
<td>F</td>
</tr>
</tbody>
</table>
</li>
<li>
<p><strong>||</strong> (or) <strong>Truth Table</strong></p>
<table>
<thead>
<tr class="header">
<th>Input</th>
<th>Input</th>
<th>Output</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>T</td>
<td>T</td>
<td>T</td>
</tr>
<tr class="even">
<td>T</td>
<td>F</td>
<td>T</td>
</tr>
<tr class="odd">
<td>F</td>
<td>T</td>
<td>T</td>
</tr>
<tr class="even">
<td>F</td>
<td>F</td>
<td>F</td>
</tr>
</tbody>
</table>
</li>
</ul>
</li>
<li><strong>Logical Order of Operations</strong> : JS will evaluate !, then &&, then ||.</li>
<li>
<p><strong>De Morgan’s Law</strong> : Common mistake in boolean logic is incorrectly distributing ! across
parentheses.</p>
<div class="sourceCode" id="cb7">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="6"><code class="sourceCode javascript"><a class="sourceLine" id="cb7-1" title="1"><span class="op">!</span>(A <span class="op">||</span> B) <span class="op">===</span> <span class="op">!</span>A <span class="op">&&</span> <span class="op">!</span>B<span class="op">;</span></a>
<a class="sourceLine" id="cb7-2" title="2"><span class="op">!</span>(A <span class="op">&&</span> B) <span class="op">===</span> <span class="op">!</span>A <span class="op">||</span> <span class="op">!</span>B<span class="op">;</span></a></code></pre>
</div>
<ul>
<li>In summary, to correctly distribute ! across parentheses we must also flip the operation within.</li>
</ul>
</li>
<li>
<p><strong>Short-Circuit Evaluation</strong> : Because JS evalutes from left to right, expressions can
“short-circuit”. For example if we have true on the left of an || logical comparison, it will stop
evaluating and yield true instead of wasting resources on processing the rest of the statement.</p>
<div class="sourceCode" id="cb8">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="7"><code class="sourceCode javascript"><a class="sourceLine" id="cb8-1" title="1"><span class="va">console</span>.<span class="at">log</span>(<span class="kw">true</span> <span class="op">||</span> <span class="op">!</span><span class="kw">false</span>)<span class="op">;</span> <span class="co">// => stops after it sees "true ||"</span></a></code></pre>
</div>
<hr>
</li>
</ul>
<h2 id="comparison-operators"><strong>Comparison Operators</strong></h2>
<p>All comparison operators will result in a boolean output.</p>
<p><strong>The relative comparators</strong></p>
<ul>
<li><strong>></strong> (greater than)</li>
<li><strong><</strong> (less than)</li>
<li><strong>>=</strong> (greater than or equal to)</li>
<li><strong><=</strong> (less than or equal to)</li>
<li><strong>===</strong> (equal to)</li>
<li><strong>!==</strong> (not equal to)</li>
</ul>
<blockquote>
<p>Fun Fact: “a” < “b” is considered valid JS Code because string comparisons are compared
lexicographically (meaning dictionary order), so “a” is less than “b” because it appears earlier!</p>
</blockquote>
<blockquote>
<p>If there is ever a standstill comparison of two string lexicographically (i.e. app vs apple) the
comparison will deem the shorter string lesser.</p>
</blockquote>
<p><strong>Difference between == and ===</strong></p>
<ul>
<li><strong>===</strong> : Strict Equality, will only return true if the two comparisons are entirely the
same.</li>
<li><strong>==</strong> : Loose Equality, will return true even if the values are of a different type, due to
coercion. (Avoid using this)</li>
</ul>
<hr>
<h2 id="variables"><strong>Variables</strong></h2>
<p>Variables are used to store information to be referenced and manipulated in a program.</p>
<ul>
<li>
<p>We initialize a variable by using the <strong>let</strong> keyword and a <strong>=</strong> single equals
sign (assignment operator).</p>
<div class="sourceCode" id="cb9">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="8"><code class="sourceCode javascript"><a class="sourceLine" id="cb9-1" title="1"><span class="kw">let</span> bootcamp <span class="op">=</span> <span class="st">"Lambda"</span><span class="op">;</span></a>
<a class="sourceLine" id="cb9-2" title="2"><span class="va">console</span>.<span class="at">log</span>(bootcamp)<span class="op">;</span> <span class="co">// "Lambda"</span></a></code></pre>
</div>
</li>
<li>JS variable names can contain any alphanumeric characters, underscores, or dollar signs (cannot being with
a number).</li>
<li>
<p>If you do not declare a value for a variable, undefined is automatically set.</p>
<div class="sourceCode" id="cb10">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="9"><code class="sourceCode javascript"><a class="sourceLine" id="cb10-1" title="1"><span class="kw">let</span> bootcamp<span class="op">;</span></a>
<a class="sourceLine" id="cb10-2" title="2"><span class="va">console</span>.<span class="at">log</span>(bootcamp)<span class="op">;</span> <span class="co">// undefined</span></a></code></pre>
</div>
</li>
<li>We can change the value of a previously declared variable (let, not const) by re-assigning it another
value.</li>
<li>
<p><strong>let</strong> is the updated version of <strong>var</strong>; there are some differences in terms
of hoisting and global/block scope - will be covered later in the course (common interview question!)</p>
</li>
</ul>
<p><strong>Assignment Shorthand</strong></p>
<div class="sourceCode" id="cb11">
<pre class="sourceCode js" data-initialized="true"
data-gclp-id="10"><code class="sourceCode javascript"><a class="sourceLine" id="cb11-1" title="1"><span class="kw">let</span> num <span class="op">=</span> <span class="dv">0</span><span class="op">;</span></a>
<a class="sourceLine" id="cb11-2" title="2">num <span class="op">+=</span> <span class="dv">10</span><span class="op">;</span> <span class="co">// same as num = num + 10</span></a>
<a class="sourceLine" id="cb11-3" title="3">num <span class="op">-=</span> <span class="dv">2</span><span class="op">;</span> <span class="co">// same as num = num - 2</span></a>
<a class="sourceLine" id="cb11-4" title="4">num /<span class="op">=</span> <span class="dv">4</span><span class="op">;</span> <span class="co">// same as num = num / 4</span></a>
<a class="sourceLine" id="cb11-5" title="5">num <span class="op">*=</span> <span class="dv">7</span><span class="op">;</span> <span class="co">// same as num = num * 7</span></a></code></pre>
</div>
<ul>
<li>
<p>In general, any nonsensical arithmetic will result in <strong>NaN</strong> ; usually operations that
include undefined.</p>
</li>
<li><strong>declaration</strong> : process of simply introducing a variable name.</li>
<li>
<p><strong>initialization</strong> : process of both declaring and assigning a variable on the same line.
</p>
</li>
</ul>
<hr>
<h2 id="functions"><strong>Functions</strong></h2>
<p>A function is a procedure of code that will run when called. Functions are used so that we do not have to
rewrite code to do the same thing over and over. (Think of them as ‘subprograms’)</p>
<ul>
<li><strong>Function Declaration</strong> : Process when we first initially write our function.
<ul>
<li>Includes three things:
<ul>
<li>Name of the function.</li>
<li>A list of <em>parameters</em> ()</li>
<li>The code to execute {}</li>
</ul>
</li>
</ul>
</li>
<li><strong>Function Calls</strong> : We can call upon our function whenever and wherever* we want. (*wherever
is only after the initial declaration)
<ul>
<li>JS evaluates code top down, left to right.</li>
<li>When we execute a declared function later on in our program we refer to this as
<strong>invoking</strong> our function.</li>
<li>Every function in JS returns undefined unless otherwise specified.</li>
<li>When we hit a <strong>return</strong> statement in a function we immediately exit the function and
return to where we called the function.</li>
</ul>
</li>
<li>When naming functions in JS always use camelCase and name it something appropriate. > Greate code reads
like English and almost explains itself. Think: Elegant, readable, and maintainable!</li>
</ul>
<hr>
<h2 id="parameters-and-arguments"><strong>Parameters and Arguments</strong></h2>
<ul>
<li><strong>Parameters</strong> : Comma seperated variables specified as part of a function’s declaration.
</li>
<li>
<p><strong>Arguments</strong> : Values passed to the function when it is invoked.</p>
</li>
<li><em>If the number of arguments passed during a function invocation is different than the number of
paramters listed, it will still work.</em></li>
<li>
<p>However, is there are not enough arguments provided for parameters our function will likely yield
<strong>Nan</strong>.</p>
</li>
</ul>
<hr>
<form id="gclp-frame-form" target="gclp-frame" method="post" style="display: none;"></form>
<div class="gclp-code-grabber" data-gclp-id="0" data-hasqtip="true"
style="left: 874.994px; top: 1209.46px; display: none;"></div>
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style="left: 874.994px; top: 1432.73px; display: none;"></div>
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style="left: 874.994px; top: 1548.6px; display: none;"></div>
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style="left: 874.994px; top: 1671.59px; display: none;"></div>
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style="left: 874.994px; top: 1839.03px; display: none;"></div>
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style="left: 875.994px; top: 2153.32px; display: none;"></div>
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style="left: 874.994px; top: 2559.37px; display: none;"></div>
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style="left: 874.994px; top: 2728.78px; display: none;"></div>
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style="left: 874.994px; top: 3363.32px; display: none;"></div>
<div class="gclp-code-grabber" data-gclp-id="9" data-hasqtip="true"
style="left: 874.994px; top: 3485.32px; display: none;"></div>
<div class="gclp-code-grabber" data-gclp-id="10" data-hasqtip="true"
style="left: 875.994px; top: 3654.92px; display: none;"></div><span
style="margin: 0px auto; border: 2px dotted rgb(0, 0, 0); position: absolute; z-index: 2147483647; visibility: hidden; left: 1024px; width: 0px; top: 3258px; height: 0px;"></span><span
style="z-index: 2147483647; position: absolute; visibility: hidden; left: 1009px; width: 50px; top: 3243px; height: 20px; font-size: 10px; color: black;"></span>
<h2 id="deployment">
<a target="_blank" rel="noopener noreferrer"
href="https://60637489113cfe1345c7fcf9--jolly-shannon-bbcd09.netlify.app/">deployment</a>
</h2>
<p>0.) Links:</p>
<table>
<colgroup>
<col style="width: 50%">
<col style="width: 50%">
</colgroup>
<thead>
<tr class="header">
<th style="text-align: left;">Name</th>
<th style="text-align: left;">Hyperlink</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;">OKTA</td>
<td style="text-align: left;">
<a
href="https://lambdaschoolsso.okta.com/login/login.htm?fromURI=%2Fapp%2FUserHome">https://lambdaschoolsso.okta.com/login/login.htm?fromURI=%2Fapp%2FUserHome</a>
</td>
</tr>
<tr class="even">
<td style="text-align: left;">Calendar</td>
<td style="text-align: left;">
<a
href="https://calendar.google.com/calendar/u/0/embed?src=c_2q0kvam9h9k5i6t40qp5n18dh8@group.calendar.google.com">https://calendar.google.com/calendar/u/0/embed?src=c_2q0kvam9h9k5i6t40qp5n18dh8@group.calendar.google.com</a>
</td>
</tr>
<tr class="odd">
<td style="text-align: left;">Slack</td>
<td style="text-align: left;">
<a
href="https://app.slack.com/client/T4JUEB3ME/G01QG65CN75">https://app.slack.com/client/T4JUEB3ME/G01QG65CN75</a>
</td>
</tr>
<tr class="even">
<td style="text-align: left;"></td>
<td style="text-align: left;"></td>
</tr>
<tr class="odd">
<td style="text-align: left;"></td>
<td style="text-align: left;"></td>
</tr>
<tr class="even">
<td style="text-align: left;"></td>
<td style="text-align: left;"></td>
</tr>
<tr class="odd">
<td style="text-align: left;"></td>
<td style="text-align: left;"></td>
</tr>
<tr class="even">
<td style="text-align: left;"></td>
<td style="text-align: left;"></td>
</tr>
<tr class="odd">
<td style="text-align: left;">Prep Work</td>
<td style="text-align: left;">
<a href="https://apply.lambdaschool.com/courses/web/">https://apply.lambdaschool.com/courses/web/</a>
</td>
</tr>
</tbody>
</table>
<p>1.) Platforms we need while attending class:</p>
<p>2.) Web Development Software:</p>
<p>3.) Pre-Course Work</p>
<body for="html-export">
<div class="mume markdown-preview ">
<h1 class="mume-header" id="prep-work">Prep-Work</h1>
<h2 class="mume-header" id="deploymenthttps60637489113cfe1345c7fcf9-jolly-shannon-bbcd09netlifyapp"><a
href="https://60637489113cfe1345c7fcf9--jolly-shannon-bbcd09.netlify.app/">deployment</a></h2>
<p>0.) Links:</p>
<table>
<thead>
<tr>
<th style="text-align:left">Name</th>
<th style="text-align:left">Hyperlink</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left">OKTA</td>
<td style="text-align:left"><a
href="https://lambdaschoolsso.okta.com/login/login.htm?fromURI=%2Fapp%2FUserHome">https://lambdaschoolsso.okta.com/login/login.htm?fromURI=%2Fapp%2FUserHome</a>
</td>
</tr>
<tr>
<td style="text-align:left">Calendar</td>
<td style="text-align:left"><a
href="https://calendar.google.com/calendar/u/0/embed?src=c_2q0kvam9h9k5i6t40qp5n18dh8@group.calendar.google.com">https://calendar.google.com/calendar/u/0/embed?src=c_2q0kvam9h9k5i6t40qp5n18dh8@group.calendar.google.com</a>
</td>
</tr>
<tr>
<td style="text-align:left">Slack</td>
<td style="text-align:left"><a
href="https://app.slack.com/client/T4JUEB3ME/G01QG65CN75">https://app.slack.com/client/T4JUEB3ME/G01QG65CN75</a>
</td>
</tr>
<tr>
<td style="text-align:left" colspan="2"></td>
</tr>
<tr>
<td style="text-align:left" colspan="2"></td>
</tr>
<tr>
<td style="text-align:left" colspan="2"></td>
</tr>
<tr>
<td style="text-align:left" colspan="2"></td>
</tr>
<tr>
<td style="text-align:left" colspan="2"></td>
</tr>
<tr>
<td style="text-align:left">Prep Work</td>
<td style="text-align:left"><a
href="https://apply.lambdaschool.com/courses/web/">https://apply.lambdaschool.com/courses/web/</a>
</td>
</tr>
</tbody>
</table>
<p>1.) Platforms we need while attending class:</p>
<p>2.) Web Development Software:</p>
<p>3.) Pre-Course Work</p>
<pre data-role="codeBlock" data-info="" class="language-"><code>.
├── README.html
├── README.md
├── SUMMARY.html
├── SUMMARY.md
├── codeswing.json
├── comparison.png
├── demo.html
├── directory.html
├── index.html
├── javascript-practice
│ ├── 00_expressions_variables
│ │ ├── exercises
│ │ │ ├── A_executing_code_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── B_expressions_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── C_variables_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── D_string_indexing_and_methods_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │
│ │ ├──
│ │ └── solutions
│ │ ├── A_executing_code_solution
│ │ │ ├── age.js
│ │ │ ├── greeting.js
│ │ │ ├──
│ │ │ ├── thirsty.js
│ │ │ └── whoami.js
│ │ ├── B_expressions_solution
│ │ │ ├── boolean-expressions.js
│ │ │ ├── comparisons.js
│ │ │ ├── number-expressions.js
│ │ │ ├──
│ │ │ └── string-expressions.js
│ │ ├── C_variables_solution
│ │ │ ├── four.js
│ │ │ ├── one.js
│ │ │ ├──
│ │ │ ├── three.js
│ │ │ ├── two.js
│ │ │ └── zero.js
│ │ ├── D_string_indexing_and_methods_solution
│ │ │ ├── a-tedious-task.js
│ │ │ ├── dare-to-decipher.js
│ │ │ ├── proper-patterns.js
│ │ │ ├──
│ │ │ └── small-string-snippets.js
│ │
│ ├── 01_conditionals
│ │ ├── exercises
│ │ │ ├── A_conditionals_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │
│ │ ├──
│ │ └── solutions
│ │ ├── A_conditionals_solution
│ │ │ ├── one.js
│ │ │ ├──
│ │ │ ├── three.js
│ │ │ ├── two.js
│ │ │ └── zero.js
│ │
│ ├── 02_functions
│ │ ├── exercises
│ │ │ ├── A_functions_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── B_functions_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── C_functions_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │
│ │ ├──
│ │ └── solutions
│ │ ├── A_functions_solution
│ │ │ ├── average.js
│ │ │ ├── ends-with-t.js
│ │ │ ├── half.js
│ │ │ ├── is-div-by-4.js
│ │ │ ├── is-long.js
│ │ │ ├── keep-it-quiet.js
│ │ │ ├──
│ │ │ ├── snippet-0-1.js
│ │ │ ├── snippet-0-2.js
│ │ │ ├── snippet-0-3.js
│ │ │ └── snippet-0-4.js
│ │ ├── B_functions_solution
│ │ │ ├── ends-in-ly.js
│ │ │ ├── funny-sound.js
│ │ │ ├── longer.js
│ │ │ ├── one-or-none.js
│ │ │ ├── parity.js
│ │ │ ├──
│ │ │ ├── starts-with-r.js
│ │ │ ├── string-size.js
│ │ │ └── wacky-word.js
│ │ ├── C_functions_solution
│ │ │ ├── average-of-four.js
│ │ │ ├── case-changer.js
│ │ │ ├── contains.js
│ │ │ ├── divisible.js
│ │ │ ├── in-range.js
│ │ │ ├── larger.js
│ │ │ ├── number-change.js
│ │ │
│ │
│ ├── 03_loops
│ │ ├── exercises
│ │ │ ├── A_loops_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── B_loops_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── C_loops_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │
│ │ ├──
│ │ └── solutions
│ │ ├── A_loops_solution
│ │ │ ├── count-up.js
│ │ │ ├── evens.js
│ │ │ ├── min-to-max.js
│ │ │ ├── one-to-four.js
│ │ │ ├──
│ │ │ ├── snippet-1.js
│ │ │ ├── snippet-2.js
│ │ │ ├── snippet-3.js
│ │ │ ├── snippet-4.js
│ │ │ ├── snippet-5.js
│ │ │ └── string-iterate.js
│ │ ├── B_loops_solution
│ │ │ ├── div-by-either.js
│ │ │ ├── five-multiples-of.js
│ │ │ ├── no-ohs.js
│ │ │ ├── odd-sum.js
│ │ │ ├── product-up-to.js
│ │ │ ├──
│ │ │ ├── string-repeater.js
│ │ │ └── sum-up-to.js
│ │ ├── C_loops_solution
│ │ │ ├── censor-e.js
│ │ │ ├── divisible-range.js
│ │ │ ├── fizz-buzz.js
│ │ │ ├── raise-power.js
│ │ │ ├── remove-capitals.js
│ │ │ ├── reverse-iterate.js
│ │ │
│ │
│ ├── 04_arrays
│ │ ├── exercises
│ │ │ ├── A_arrays_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── B_arrays_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── C_arrays_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │
│ │ ├──
│ │ └── solutions
│ │ ├── A_arrays_solution
│ │ │ ├── bleep-vowels.js
│ │ │ ├── divisors.js
│ │ │ ├── filter-long-words.js
│ │ │ ├── num-odds.js
│ │ │ ├──
│ │ │ ├── stay-positive.js
│ │ │ ├── strings-to-lengths.js
│ │ │ └── total.js
│ │ ├── B_arrays_solution
│ │ │ ├── choose-divisibles.js
│ │ │ ├── make-acronym.js
│ │ │ ├── maximum.js
│ │ │ ├── reverse-array.js
│ │ │ ├──
│ │ │ ├── word-count.js
│ │ │ └── your-average-function.js
│ │ ├── C_arrays_solution
│ │ │ ├── alternating-caps.js
│ │ │ ├── common-elements.js
│ │ │ ├── lengthiest-word.js
│ │ │ ├── number-range.js
│ │ │ ├── remove-short-words.js
│ │ │
│ │
│ ├── 05_nesting
│ │ ├── exercises
│ │ │ ├── A_nested_loops_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── B_two_dimensional_arrays_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │ ├── C_more_problems_exercise
│ │ │ │ ├── README.html
│ │ │ │ ├── README.md
│ │ │ │
│ │ │
│ │ ├──
│ │ └── solutions
│ │ ├── A_nested_loops_solution
│ │ │ ├── pair-print.js
│ │ │ ├── print-combinations.js
│ │ │ ├──
│ │ │ ├── snippet-1.js
│ │ │ ├── snippet-2.js
│ │ │ ├── snippet-3.js
│ │ │ ├── snippet-4.js
│ │ │ ├── snippet-5.js
│ │ │ └── two-sum.js
│ │ ├── B_two_dimensional_arrays_solution
│ │ │ ├── make-matrix.js
│ │ │ ├── print-2d.js
│ │ │ ├──
│ │ │ ├── total-product.js
│ │ │ ├── two-sum-pairs.js
│ │ │ └── zipper.js
│ │ ├── C_more_problems_solution
│ │ │ ├── remove-dupes.js
│ │ │ ├── remove-first-vowel.js
│ │ │ ├── remove-vowels.js
│ │ │ ├──
│ │ │ ├── shorten-long-words.js
│ │ │ └── spam.js
│ │
│ ├── 06_decomposition_pattern
│ │ ├── A_decomposing_problems_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │ ├── B_decomposing_problems_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │ ├── C_decomposing_problems_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │
│ ├── 07_objects
│ │ ├── A_objects_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │ ├── B_objects_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │ ├── C_objects_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │
│ ├── 08_higher_order_functions
│ │ ├── A_native_callback_methods_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │ ├── B_native_callback_methods_exercise
│ │ │ ├── README.html
│ │ │ ├── README.md
│ │ │
│ │
│
├── js.js
├── one-of-every-tag.html
├── readme
│ ├── README.html
│ ├── README_files
│ │ ├── katex.min.css
│ │
│
├── resources.html
├── resources.md
├── script.js
├── style.css
└── tree.md
66 directories, 241 files
</code></pre>
<h1 class="mume-header undefined" id="week-1brintroduction-to-javascript-part-1">WEEK 1<br><em>Introduction
to JavaScript (Part 1)</em></h1>
<hr>
<p><a href="#expression-learning-objectives"><strong>Expression Learning Objectives</strong></a><br>
<a href="#intro-to-functions-learning-objectives"><strong>Intro to Functions Learning
Objectives</strong></a></p>
<ul>
<li><a href="#hello-world">Hello World</a>
<ul>
<li><a href="#getting-visual-feedback-in-your-programs">Getting visual feedback in your programs</a>
</li>
<li><a href="#code-comments">Code comments</a></li>
</ul>
</li>
<li><a href="#the-number-type">The Number Type</a>
<ul>
<li><a href="#all-the-numbers">All the numbers</a></li>
<li><a href="#the-basic-arithmetic-operators">The basic arithmetic operators</a></li>
</ul>
</li>
<li><a href="#the-string-type">The String Type</a>
<ul>
<li><a href="#writing-a-valid-string">Writing a valid string</a></li>
<li><a href="#calculating-length">Calculating length</a></li>
<li><a href="#indexing-a-string">Indexing a string</a></li>
<li><a href="#concatenation">Concatenation</a></li>
</ul>
</li>
<li><a href="#the-boolean-type">The Boolean Type</a>
<ul>
<li><a href="#logical-operators">Logical Operators</a></li>
<li><a href="#de-morgans-law">De Morgan's Law</a></li>
</ul>
</li>
<li><a href="#comparison-operators">Comparison Operators</a>
<ul>
<li><a href="#the-relative-comparators">The relative comparators</a></li>
<li><a href="#vs">=== vs ==</a></li>
</ul>
</li>
<li><a href="#basic-variables">Basic Variables</a>
<ul>
<li><a href="#initializing-a-variable">Initializing a variable</a></li>
<li><a href="#manipulating-variables">Manipulating variables</a></li>
<li><a href="#nan">NaN</a></li>
</ul>
</li>
<li><a href="#introduction-to-functions">Introduction to Functions</a>
<ul>
<li><a href="#writing-functions">Writing Functions</a></li>
<li><a href="#invoking-or-calling-a-function">Invoking or "calling" a function</a></li>
<li><a href="#returning-a-value">Returning a value</a></li>
<li><a href="#the-importance-of-naming">The importance of naming</a></li>
</ul>
</li>
<li><a href="#parameters-and-arguments">Parameters and Arguments</a>
<ul>
<li><a href="#the-difference-between-parameters-and-arguments">The difference between Parameters and
Arguments</a></li>
</ul>
</li>
</ul>
<p><a href="#control-flow-and-array-learning-objectives"><strong>Control Flow and Array Learning
Objectives</strong></a></p>
<ul>
<li><a href="#control-flow-conditional-statements">Control Flow - Conditional Statements</a>
<ul>
<li><a href="#a-quick-word-on-syntax">A Quick Word on Syntax</a></li>
<li><a href="#writing-conditional-statements">Writing Conditional Statements</a></li>
</ul>
</li>
<li><a href="#mutually-exclusive-conditions">Mutually Exclusive Conditions</a>
<ul>
<li><a href="#when-to-use-if-statements">When to use if statements</a></li>
</ul>
</li>
<li><a href="#control-flow-looping">Control Flow - Looping</a>
<ul>
<li><a href="#looping">Looping</a></li>
<li><a href="#translating-from-one-loop-to-another">Translating From One Loop to Another</a></li>
</ul>
</li>
<li><a href="#the-array-type">The Array Type</a>
<ul>
<li><a href="#using-arrays">Using arrays</a></li>
<li><a href="#indexing-arrays">Indexing arrays</a></li>
<li><a href="#working-with-arrays">Working with arrays</a></li>
<li><a href="#concatenation-with-arrays">Concatenation with arrays</a></li>
</ul>
</li>
</ul>
<p><a href="#intermediate-functions-learning-objectives"><strong>Intermediate Functions Learning
Objectives</strong></a></p>
<ul>
<li><a href="#function-expressions">Function Expressions</a>
<ul>
<li><a href="#functions-as-first-class-objects">Functions as first-class objects</a></li>
</ul>
</li>
<li><a href="#two-dimensional-arrays-2d-arrays">Two-Dimensional Arrays (2D Arrays)</a>