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<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link href='https://fonts.googleapis.com/css?family=Architects+Daughter' rel='stylesheet' type='text/css'>
<link rel="stylesheet" type="text/css" href="stylesheets/stylesheet.css" media="screen">
<link rel="stylesheet" type="text/css" href="stylesheets/pygment_trac.css" media="screen">
<link rel="stylesheet" type="text/css" href="stylesheets/print.css" media="print">
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<title>Checkpoint-javascript</title>
</head>
<body>
<header>
<div class="inner">
<h1>Checkpoint-javascript</h1>
<h2>Test tasks for the CheckPoint programm</h2>
<a href="https://github.com/hata69/CheckPoint-javascript" class="button"><small>View project on</small> GitHub</a>
</div>
</header>
<style>
.read-section {
margin-left: 20px;
}
</style>
<!--- Google Doc --->
<div id="content-wrapper">
<div class="inner clearfix">
<section id="main-content">
<h1>JavaScript (Core)</h1></p>
<p><span>The material that needed for JavaScript learning and for further learning of popular JS liberies and frameworks.</span>
</p>
<p class="c1 c17"><span>The articles which can help in the learning:</span></p>
<ul class="c7 lst-kix_59wcls9nyzl1-0 start">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru&sa=D&sntz=1&usg=AFQjCNGFgBL3KtFhyWLPMc7ZxBBnAbKPIQ">http://learn.javascript.ru</a></span>
</li>
<li class="c1 c9"><span>Handbook: </span><span class="c14 c19">JavaScript: The Definitive Guide</span><span
class="c14"> by </span><span class="c3">David Flanagan</span></li>
<li class="c1 c9">JavaScript Design Patterns by <a href="http://addyosmani.com/resources/essentialjsdesignpatterns/book/">Addy Osmani</a></li>
</ul>
<p class="c1 c10"><span></span></p>
<p class="c1 c16"><H2>Part 1 (2 weeks)</H2></p>
<p class="c1 c6"><h3>1. Basics of JavaScript</h3></p>
<ul class="c7 lst-kix_4nqtm5wu9mrl-0 start">
<li class="c1 c2"><span>Variable names</span></li>
<li class="c1 c2"><span>Data Types</span></li>
<li class="c1 c2"><span>Basic operators ( unary, binary etc.)</span></li>
<li class="c1 c2"><span>Condinional operators <if>, <?> </span></li>
<li class="c1 c2"><span>Logical operators (||, &&, !)</span></li>
<li class="c1 c2"><span>Loop</span></li>
<li class="c1 c2"><span>Directive <break>, <continue></span></li>
<li class="c1 c2"><span><switch> construction</span></li>
<li class="c1 c2"><span>“Mothod” and “properties” meaning</span></li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_lthdxxe2sgr1-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fvariable-names&sa=D&sntz=1&usg=AFQjCNH76Fl_nCQ_EWHabLraeK_FCK5awg">http://learn.javascript.ru/variable-names</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Ftypes-intro&sa=D&sntz=1&usg=AFQjCNFRa6QFzKvlEhF8Fs4qEIUTEI1KtA">http://learn.javascript.ru/types-intro</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Foperators&sa=D&sntz=1&usg=AFQjCNEQIjgQC1hJ6Vr8l5EbwGHJ6Fqmmg">http://learn.javascript.ru/operators</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fcomparison&sa=D&sntz=1&usg=AFQjCNFReGmOlar1gx4uUhtcuNxDVLvX3w">http://learn.javascript.ru/comparison</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fifelse&sa=D&sntz=1&usg=AFQjCNGcs8RuIWBpM7rgjbChBeVL6xWbMg">http://learn.javascript.ru/ifelse</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Flogical-ops&sa=D&sntz=1&usg=AFQjCNEKJQptWilEMOdAmXkfCQtJTIadyg">http://learn.javascript.ru/logical-ops</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fwhile-for&sa=D&sntz=1&usg=AFQjCNEuzQcv0xpqSpHDSSmLbbJy73ag0Q">http://learn.javascript.ru/while-for</a></span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fbreak-continue&sa=D&sntz=1&usg=AFQjCNFIv7sd2GwwZ3TP7ZQRyvfeWjwS8Q">http://learn.javascript.ru/break-continue</a></span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fswitch&sa=D&sntz=1&usg=AFQjCNGVDYddGji-tNIDx4ZN-PvDaUNK7g">http://learn.javascript.ru/switch</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fproperties-and-methods&sa=D&sntz=1&usg=AFQjCNFFJd-Xjn7fZ8Cu8gykqQ4R85AJNg">http://learn.javascript.ru/properties-and-methods</a></span><span> </span>
</li>
</ol>
<p class="c1 c6"><h3>2. Data structure</h3></p>
<ul class="c7 lst-kix_jrks0qagomgn-0 start">
<li class="c1 c2"><span>Strings</span></li>
<li class="c1 c2"><span>Numbers</span></li>
<li class="c1 c2"><span>Conversion of types for primitives</span></li>
<li class="c1 c2"><span>Object</span></li>
<li class="c1 c2"><span>Arrays and properties of Arrays</span></li>
<li class="c1 c2"><span>Data and time</span></li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_i8m0vbjdfor2-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fstring&sa=D&sntz=1&usg=AFQjCNEdIFGo-Pl-OvgX9WVVdYKgn3jSPw">http://learn.javascript.ru/string</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fnumber&sa=D&sntz=1&usg=AFQjCNEe7DKO5E7ngE4hOR9T3MPxFs16Jg">http://learn.javascript.ru/number</a></span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Ftypes-conversion&sa=D&sntz=1&usg=AFQjCNEcrHgvv2XYrbWnIAPOutchvuPqaQ">http://learn.javascript.ru/types-conversion</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fobject&sa=D&sntz=1&usg=AFQjCNG4HDg5vtL5050J35-3wGYPthf0-w">http://learn.javascript.ru/object</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Farray&sa=D&sntz=1&usg=AFQjCNFU-9dRvWoHZxn0hKZjM1k4Cv09Yw">http://learn.javascript.ru/array</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Farray-methods&sa=D&sntz=1&usg=AFQjCNF-px4Tduqz-TTq_fYGmNisozlysA">http://learn.javascript.ru/array-methods</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fdatetime&sa=D&sntz=1&usg=AFQjCNGbuCZVywUV96j-ScmwdsmW3XNErQ">http://learn.javascript.ru/datetime</a></span><span> </span>
</li>
</ol>
<p class="c1 c6"><h3>3. Functions</h3></p>
<ul class="c7 lst-kix_jrks0qagomgn-0">
<li class="c1 c2"><span>Functions: Function Declaration, Function Expration</span></li>
<li class="c1 c2"><span>Named Function Expression</span></li>
<li class="c1 c2"><span>Global object (window)</span></li>
<li class="c1 c2"><span>Visibility scope</span></li>
<li class="c1 c2"><span>Closure</span></li>
<li class="c1 c2"><span>Arguments</span></li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_wp6814rvojkl-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Ffunctions-closures&sa=D&sntz=1&usg=AFQjCNFYyb6k8A_YKlnN-I3bUDgsxOE-_w">http://learn.javascript.ru/functions-closures</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c6"><h3>4. Objects and methods</h3></p>
<ul class="c7 lst-kix_jrks0qagomgn-0">
<li class="c1 c13"><span>Constructors and methods</span></li>
<li class="c1 c13"><span>Context <this></span></li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_oxaz6ep6xr97-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fobjects-more&sa=D&sntz=1&usg=AFQjCNFPq9wmVAy2riW5scC_epfLpFessg">http://learn.javascript.ru/objects-more</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c6"><h3>5. Working with objects</h3></p>
<ul class="c7 lst-kix_jrks0qagomgn-0">
<li class="c1 c13"><span>Prototype: inheritance and methods</span></li>
<li class="c1 c13"><span>“Class” in javascript</span></li>
<li class="c1 c13"><span>Property <constructor> and <instanceof></span></li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_cwb69dxieljm-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fprototype&sa=D&sntz=1&usg=AFQjCNFhbdOqOwNjK0GbpSzTeNK7_mRJ1w">http://learn.javascript.ru/prototype</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fclasses&sa=D&sntz=1&usg=AFQjCNENiMkVXz_aGnlyi80pRXo1yEC2Dg">http://learn.javascript.ru/classes</a></span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fclass-inheritance&sa=D&sntz=1&usg=AFQjCNG2SBJ_2lfEO8R9K7RkInD66TbyLg">http://learn.javascript.ru/class-inheritance</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fconstructor&sa=D&sntz=1&usg=AFQjCNGlDq5SLph9vvFmRhH4yRYVFpREsQ">http://learn.javascript.ru/constructor</a></span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Finstanceof&sa=D&sntz=1&usg=AFQjCNEXdzRJ73aMFxMj1sYHi0Ushge7FA">http://learn.javascript.ru/instanceof</a></span><span> </span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c16"><h2>Part 2 (2 weeks)</h2></p>
<p class="c1 c6"><h3>1. Timers: setTimeout, setInterval</h3></p>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_6iga6w9umzta-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Ftimers&sa=D&sntz=1&usg=AFQjCNFPyngMxtT6LZSRvR7fljnAdeBMmg">http://learn.javascript.ru/timers</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c6"><h3>2. Binding to the context: bind (call, apply)</h3></p>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_kjtenunj1vbi-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fbinding&sa=D&sntz=1&usg=AFQjCNG5c_-Miqx6UsiO4lXalI1YUttKWg">http://learn.javascript.ru/binding</a></span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fthis&sa=D&sntz=1&usg=AFQjCNHvtEobaNlxjPfbCZfSm6Ft4uPfBA">http://learn.javascript.ru/this</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c6"><h3>3. >Document:</h3></p>
<ul class="c7 lst-kix_dcx0bb9c63r7-0 start">
<li class="c1 c8"><span>DOM tree</span></li>
<li class="c1 c8"><span>Properties and attributes of nodes</span></li>
<li class="c1 c8"><span>Search: getElementBy*, querySelector*</span></li>
<li class="c1 c8"><span>Adding and removing of nodes</span></li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_hpf0tqut6p8-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fdom&sa=D&sntz=1&usg=AFQjCNFjPM9H4Xrjkghxj0uP4EE5pqpmXQ">http://learn.javascript.ru/dom</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c6"><h3>4. Coordinates</h3></p>
<ul class="c7 lst-kix_n26s732m8x4z-0 start">
<li class="c1 c8"><span>Styles and Classes: getComputedStyle</span></li>
<li class="c1 c8"><span>Dementions and scrolling of elements</span></li>
<li class="c1 c8"><span>Coordinates</span></li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_58e763ege8t5-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fview-and-position&sa=D&sntz=1&usg=AFQjCNEEr8EV-f9xr8Z_-C0ssMkD9QyW7Q">http://learn.javascript.ru/view-and-position</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c6"><h3>5. Events</h3></p>
<ul class="c7 lst-kix_n26s732m8x4z-0">
<li class="c1 c8"><span>Event object</span></li>
<li class="c1 c8"><span>Events delegation</span></li>
<li class="c1 c8"><span>Mouse events:</span></li>
<li class="c1 c4"><span>Introduction: click, button, coordinates</span></li>
<li class="c1 c4"><span>Motion events: "mouseover/out/move/leave/enter"</span></li>
<li class="c1 c4"><span>Mouse wheel: "wheel" and analogy</span></li>
<li class="c1 c12 c18"><span>Events of keyboard:</span></li>
<li class="c1 c4"><span>Forms: properties of elements</span></li>
<li class="c1 c4"><span>Forms: events "change", "input", "propertychange"</span></li>
<li class="c1 c4"><span>Forms: methods and "submit" event</span></li>
<li class="c1 c4"><span>Event and methods of "focus/blur"</span></li>
<li class="c1 c4"><span>Events "onscroll"</span></li>
<li class="c1 c4"><span>Events "onload", "onbeforeunload" и "onerror"</span>
</li>
</ul>
<p class="c1"><strong>Read:</strong></p>
<ol class="c7 lst-kix_l43k4reyr44r-0 start read-section" start="1">
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fevents&sa=D&sntz=1&usg=AFQjCNHo3o9UhjK61hAsVSVQaLj0gRrCTg">http://learn.javascript.ru/events</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fmouse-event&sa=D&sntz=1&usg=AFQjCNEYHGni41YbId0dImeFknb0Cv9JBg">http://learn.javascript.ru/mouse-event</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fkeyboard-events&sa=D&sntz=1&usg=AFQjCNF8bAhnCfaCxAZ9MRi4h_gToakNzw">http://learn.javascript.ru/keyboard-events</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fform-elements&sa=D&sntz=1&usg=AFQjCNGfGZX99m8Z30cSh4o-Zc6uTdnkQA">http://learn.javascript.ru/form-elements</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fevents-change&sa=D&sntz=1&usg=AFQjCNHoekqitHSdFecYm2DhMpDXVKvlPQ">http://learn.javascript.ru/events-change</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fforms-methods&sa=D&sntz=1&usg=AFQjCNERKqjyjuoIfq88bJGx-DjxLbRJDA">http://learn.javascript.ru/forms-methods</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Ffocus-blur&sa=D&sntz=1&usg=AFQjCNFGq54gERksxsCvPV8r30cNYiFBRw">http://learn.javascript.ru/focus-blur</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fevent-onscroll&sa=D&sntz=1&usg=AFQjCNFrKEz4m3yw_d_NVpuoaDAS_xUByQ">http://learn.javascript.ru/event-onscroll</a></span><span> </span>
</li>
<li class="c1 c9"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fonload-onerror&sa=D&sntz=1&usg=AFQjCNEx-tVd8HkUCSZfAfs9Fkn2FV2WFw">http://learn.javascript.ru/onload-onerror</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c12 c6"><h3>6. AJAX</h3></p>
<ul class="c7 lst-kix_ma4ndtfgwal5-0 start">
<li class="c1 c2 c12"><span>XMLHttpRequest</span></li>
<li class="c1 c2 c12"><span>Data format for AJAX</span></li>
<li class="c1 c2 c12"><span>XMLHttpRequest and POST, sending a form</span></li>
<li class="c1 c2 c12"><span>XMLHttpRequest: long requests</span></li>
<li class="c1 c2 c12"><span>Cross-domain XMLHttpRequest</span></li>
</ul>
<p class="c1 c12 c6"><strong>Read:</strong></p>
<ol class="c7 lst-kix_pt6bf1h7g65-0 start read-section" start="1">
<li class="c1 c9 c12"><span class="c11"><a class="c0"
href="http://www.google.com/url?q=http%3A%2F%2Flearn.javascript.ru%2Fxhr&sa=D&sntz=1&usg=AFQjCNGYwcZBDWaibCN4jwVTrMWauJr6kw">http://learn.javascript.ru/xhr</a></span><span> </span>
</li>
</ol>
<p class="c1 c10"><span></span></p>
<p class="c1 c10"><span></span></p>
<hr />
</section>
</div>
</div>
<!--- Google Doc End --->
<div id="content-wrapper">
<div class="inner clearfix">
<section id="main-content">
<h1>JavaScript Tasks.</h1>
<ul>
<li>Do not use any 3rd party libraries, frameworks, just pure JS and CSS.</li>
<li>Use <a href="https://jsfiddle.net/">Online IDE</a> tools for “console” taks (part 1).</li>
<li>Each function and method should be commented.</li>
</ul>
<h3>Task № 1</h3>
<p>
Please write a function <code>compile_csv_search(text, key_name)</code> that parses text in
the CSV format. </p>
<p>( You are not required to handle quoting and escaping in values;
assume field values never contain commas or other special characters.)</p>
<p>Your function must return a function that looks up a record by a value of the
field specified as the second argument to <code>compile_csv_search</code>. Assume that all
values in the key field are unique.</p>
<p><strong>Sample usage:</strong></p>
<pre>
<code>
var csv_by_name = compile_csv_search(
"ip,name,desc\n"+
"10.49.1.4,server1,Main Server\n"+
"10.52.5.1,server2,Backup Server\n",
"name");
console.log(csv_by_name("server2"));// >>> {ip: "10.52.5.1", name: "server2", desc: "Backup Server"}
console.log(csv_by_name("server9")); // >>> undefined
</code>
</pre>
<h3>Task № 2</h3>
<p>
You have the voluntary array of values. Please, write a function that will find all integer duplicates and returns their qty and its number.
<ul>
<li>If array contains several duplicates it should return the most frequent value.</li>
<li>If array has the same length of duplicates it should return the biggest number</li>
</ul>
</p>
<p><strong>Example:</strong></p>
<pre>
<code>
[0, 1, 2, 3, 3, 5, 7] // ->>> Qty: 2, number: 3
[0, 1, 1, 2, 2, 4] // ->> Qty: 2, number: 2
[0, 1, 1, 1, 2, 2, 4] // ->> Qty: 3, number: 1
</code>
</pre>
<h3>Task № 3</h3>
<p>
You have nested object, write the function that will return merged object (not nested).
Assume that all keys in the object are unique. If an object is empty, assign undefined value.
</p>
<p><strong>Example:</strong></p>
<pre>
<code>
{
a: 1,
b: {
c: 2,
d: {}
}
}
return:
{
a: 1,
c: 2,
d: undefined
}
</code>
</pre>
<h3>Task № 4</h3>
<p>
This test tries evaluate to what extent you are familiar with some basic concepts and syntax in JavaScript. No computer may be used during the test.
</p>
<p><strong>Test:</strong></p>
<pre>
<code>
var a = {}, b = "abcdefghijklmnopqrstuvwx".split('');
for (var c = 0; c<b.length; c++) {a[b[c]] = {}};
Object.prototype.c = 3;
Number.prototype.c--;
a.a = a.m = 3;
a.b.c = a.c.c = a.l.c = a.a.c*4;
a.d.c = a.g.c = 0;
a.e = a.f;
a.e.c++;
a.h.c = !a.h+1;
a.j = a.k = a.h;
a.i.c += !!a.h*2;
a.n.c = a.n.d;
a.o.c = a.n.c || null;
a.t.c = "" || ""+1;
a.p.c = a.n.c === a.o.c;
a.q.c = a.t.c / "a";
a.r.c = a.n.c == a.o.c;
a.u = function() {
aruments.calle.c = 2;
var x = 4;
return {
c:2,
d: function(a) {
x++;
x -= a || 0;
return x
}
}
};
a.v = a.u();
a.w.c = a.v.d();
a.x.c = a.v.d(1);
</code>
</pre>
<p>Link on the full test <a href="https://jsfiddle.net/nfx4n47p/3/">Test</a></p>
<code>
//Provide answers:
a.a.c ____
a.b.c ____
a.c.c ____
a.d.c ____
a.e.c ____
a.f.c ____
a.g.c ____
a.h.c ____
a.i.c ____
a.j.c ____
a.k.c ____
a.l.c ____
a.m.c ____
a.n.c ____
a.o.c ____
a.p.c ____
a.q.c ____
a.r.c ____
a.s.c ____
a.t.c ____
a.u.c ____
a.v.c ____
a.w.c ____
a.x.c ____
</code>
<h3>Task № 5</h3>
<p>
Implement ‘merge sort’ (it’s type of sorting) for voluntary array, but only 25% of Array should be sorted.
</p>
<h3>Task № 6</h3>
<p>
You have an array of lamps, which are numbered from 1 to N. By default all lights are switched off.
You are iterating throught the array with some step k and switch the light in the current lamp (turn on/off light depending on lamp's previous state).
The third input param is an array of steps you should iterate lamps array with.
For example, N = from 1 to 10, steps array is [2, 3]. All lamps are swtiched off. So, you should turn on the following lamps: №2, 4, 6, 8, 10 on the first iteration
and switch lights in lamp №3, 6, 9 on the second. So, the 6th lamp will be switched off at the end (switched twice).
You should return quantity of switched off lamps in an array.
</p>
<p><strong>Example:</strong></p>
<pre>
<code>
N = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20], P=[2,3,8] // return 12
</pre>
</code>
<h2>Part 2</h2>
<ul>
<li><strong>Do not use any 3rd party libraries, frameworks, just pure JS and CSS.</strong></li>
<li><strong>Each function and method should be commented.</strong></li>
<li><strong>Use NODE.js for http server</strong></li>
</ul>
<p> You have <a href="https://github.com/hata69/CheckPoint-javascript/blob/gh-pages/DataSyncMockUp.pdf">Design Mock Up (see PDF)</a> and you are responsible for UI implementation.
Example of test data is represented at <a href="https://github.com/hata69/CheckPoint-javascript/blob/gh-pages/sync_journal.json">JSON file</a> It's also available by GET request <a href="https://demo8884132.mockable.io/sync_journal">GET /sync_journal</a>. This data are required to build a table:</p>
<p>First table (Sync Journal):</p>
<p>For each syncDate you should show:</p>
<ul>
<li>a) Quantity of JSON objects in column - sync elements;</li>
<li>b) State. If at least one status equals ERROR, return Failed, if OK >> ok,</li>
<li>с) Сonflicts - number of elements with status == Conflict</li>
</ul>
<p>Second table (contains details of synchronization ‘Sync Details’):</p>
<ul>
<li>If user clicks on the row in the first table the second one shows IDs that grouped by Type.</li>
</ul>
<p>The design has ‘Start Sync’ button and click on the button should send http request to load new data into the first table. Animation of request/loader should be synchronized with request (data should be added to the table if animation finished).</p>
<p>For ‘Sync Mode’ select: if ‘Scheduled’ is selected, user should see ‘Schedule’ table (table is just a mock).
Also, the test app should have custom ‘back’ and ‘next’ button for navigation to appropriate page.</p>
<h3>Architectural aspect:</h3>
<p>Your application should follow the next approach:</p>
<p>1) Global route - app.js that is responsible for managing js modules.</p>
<p>It also includes a modules deletion and initialization. You can load a module, for example, by ID, that is wired up with some element (in our case it’s ‘synchronize’ - see Design Mock Up pdf ) and this ID is used into SCREEN_MANAGER.js like a key of object.
If the user opens some page, the app.js loads a module and initializes it.
Initialized module starts to load required template and call .render() method that responsible for data (json) and displaying the results. The app.js should be accessible for all pages.
If the user leaves particular page the app.js should destroy attached modules.</p>
<p>2) Page module - a class that is responsible for logic of the whole page (rendering, calculations etc).</p>
<p>3) “SCREEN_MANAGER.js” contains path information about your js/html/css. This is plain object where a ‘key’ is module ID. This object should be accessible from all pages like app.js.</p>
<p>4) Implement error handling. If your request is failed or something was not initialized then you should redirect the user to previous page and to show error message.
In such case, the app.js should delete called module by calling .destroy() method. In case of other errors, just show an error message.</p>
<p>Your html should be divided into the next parts:</p>
<ul>
<li>grid.html (grid of icons);</li>
<li>schedule.htm (schedule table);</li>
<li>syncDetails.html (Sync Details table)</li>
</ul>
</p>
<h2>Final</h2>
<p><strong>Send your completed taks to the <a href="mailto:checkpoint.10per@gmail.com">checkpoint.10per@gmail.com</a>
It should include links to the <a href="https://jsfiddle.net/">jsfiddle</a> with solved tasks for Part 1 and link to your GitHub on your Final taks Part 2.
</strong></p>
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