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2018 Critical Mass Internship Interview Assignment

Instructions

Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .

Work / Project Examples

Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.

Inspiration

Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.

Focus

If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.

Code Challenge

Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.

https://codepen.io/criticalmass/pen/BYyMwK

About

A quick questionnaire that interview candidates can fill out to provide CM with additional context.

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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2018 Critical Mass Internship Interview Assignment
Instructions
Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .
Work / Project Examples
Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.
Inspiration
Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.
Focus
If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.
Code Challenge
Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.
https://codepen.io/criticalmass/pen/BYyMwK
About
A quick questionnaire that interview candidates can fill out to provide CM with additional context.
Resources
Readme
Activity
Stars
0 stars
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1 watching
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0 forks
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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2018 Critical Mass Internship Interview Assignment
Instructions
Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .
Work / Project Examples
Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.
Inspiration
Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.
Focus
If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.
Code Challenge
Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.
https://codepen.io/criticalmass/pen/BYyMwK
About
A quick questionnaire that interview candidates can fill out to provide CM with additional context.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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2018 Critical Mass Internship Interview Assignment
Instructions
Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .
Work / Project Examples
Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.
Inspiration
Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.
Focus
If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.
Code Challenge
Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.
https://codepen.io/criticalmass/pen/BYyMwK
About
A quick questionnaire that interview candidates can fill out to provide CM with additional context.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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README.md
README.md
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2018 Critical Mass Internship Interview Assignment
Instructions
Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .
Work / Project Examples
Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.
Inspiration
Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.
Focus
If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.
Code Challenge
Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.
https://codepen.io/criticalmass/pen/BYyMwK
About
A quick questionnaire that interview candidates can fill out to provide CM with additional context.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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NameName
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README.md
README.md
Repository files navigation
2018 Critical Mass Internship Interview Assignment
Instructions
Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .
Work / Project Examples
Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.
Inspiration
Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.
Focus
If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.
Code Challenge
Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.
https://codepen.io/criticalmass/pen/BYyMwK
About
A quick questionnaire that interview candidates can fill out to provide CM with additional context.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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README.md
README.md
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2018 Critical Mass Internship Interview Assignment
Instructions
Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .
Work / Project Examples
Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.
Inspiration
Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.
Focus
If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.
Code Challenge
Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.
https://codepen.io/criticalmass/pen/BYyMwK
About
A quick questionnaire that interview candidates can fill out to provide CM with additional context.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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README.md
README.md
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2018 Critical Mass Internship Interview Assignment
Instructions
Start by reading through this file and complete the tasks outlined below. Feel free to include any resources along with your repository that you are comfortable sharing (code snippets, working applications, etc). When you are finished, You will need to create a new repository on your own GitHub account and commit the completed README.md file. Please submit the link to the repository to .
Work / Project Examples
Provide up to three examples of work/projects that you've recently participated in and provide detailed information about your role and contributions to the project.
Inspiration
Provide up to three examples of work that has recently inspired you from a technical perspective. These can be open source projects, CodePens, blog posts, etc. Be sure to include specifics on what you found inspiring.
Focus
If you were given the time and resources to build/learn anything you wanted during your internship, where would you choose to focus your efforts? Provide a brief description of how you would spend your time.
Code Challenge
Please fork the following CodePen pen, follow the instructions provided in the HTML editor comments, and do your best to complete the challenge. Provide your solution in your response, and be prepared to walk through your solution and explain the rationale behind your solution.
https://codepen.io/criticalmass/pen/BYyMwK
About
A quick questionnaire that interview candidates can fill out to provide CM with additional context.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors