wesbos · ItsNamrathaB · Apr 14, 2024 · Apr 16, 2024 · Apr 17, 2024 · Apr 18, 2024
diff --git a/01 - JavaScript Drum Kit/index-FINISHED.html b/01 - JavaScript Drum Kit/index-FINISHED.html
@@ -59,6 +59,9 @@
   <audio data-key="76" src="sounds/tink.wav"></audio>
 
 <script>
+
+  let currentAudio = null;
+
   function removeTransition(e) {
     if (e.propertyName !== 'transform') return;
     e.target.classList.remove('playing');
@@ -67,10 +70,16 @@
   function playSound(e) {
     const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
     const key = document.querySelector(`div[data-key="${e.keyCode}"]`);
+
+    if(currentAudio && !currentAudio.paused){
+      currentAudio.pause();
+      currentAudio.currentTime = 0;
+    }
+
     if (!audio) return;
 
     key.classList.add('playing');
-    audio.currentTime = 0;
+    currentAudio = audio;
     audio.play();
   }
 

diff --git a/02 - JS and CSS Clock/index-PRACTICE.html b/02 - JS and CSS Clock/index-PRACTICE.html
@@ -0,0 +1,104 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>JS + CSS Clock</title>
+  <link rel="icon" href="https://fav.farm/🔥" />
+</head>
+<body>
+
+
+    <div class="clock">
+      <div class="clock-face">
+        <div class="hand hour-hand"></div>
+        <div class="hand min-hand"></div>
+        <div class="hand second-hand"></div>
+      </div>
+    </div>
+
+
+  <style>
+    html {
+      background: #018DED url(https://unsplash.it/1500/1000?image=881&blur=5);
+      background-size: cover;
+      font-family: 'helvetica neue';
+      text-align: center;
+      font-size: 10px;
+    }
+
+    body {
+      margin: 0;
+      font-size: 2rem;
+      display: flex;
+      flex: 1;
+      min-height: 100vh;
+      align-items: center;
+    }
+
+    .clock {
+      width: 30rem;
+      height: 30rem;
+      border: 20px solid white;
+      border-radius: 50%;
+      margin: 50px auto;
+      position: relative;
+      padding: 2rem;
+      box-shadow:
+        0 0 0 4px rgba(0,0,0,0.1),
+        inset 0 0 0 3px #EFEFEF,
+        inset 0 0 10px black,
+        0 0 10px rgba(0,0,0,0.2);
+    }
+
+    .clock-face {
+      position: relative;
+      width: 100%;
+      height: 100%;
+      transform: translateY(-3px); /* account for the height of the clock hands */
+    }
+
+    .hand {
+      width: 50%;
+      height: 6px;
+      background: black;
+      position: absolute;
+      top: 50%;
+      transform-origin: 100%;
+      transform: rotate(90deg);
+      transition: all 0.05s;
+      transition-timing-function: cubic-bezier(0.1, 2.7, 0.58, 1);
+    }
+
+    .second-hand {
+      background: pink;
+    }
+
+  </style>
+
+  <script>
+    const secondsHand = document.querySelector('.second-hand');
+    const minutesHand = document.querySelector('.min-hand');
+    const hoursHand = document.querySelector('.hour-hand');
+
+    function setDate(){
+      const now = new Date();
+
+      const seconds = now.getSeconds();
+      const secondsDegrees = ((seconds / 60) * 360) + 90;
+      secondsHand.style.transform = `rotate(${secondsDegrees}deg)`;
+
+      const minutes = now.getMinutes();
+      const minutesDegrees = ((minutes / 60) * 360) + 90;
+      minutesHand.style.transform = `rotate(${minutesDegrees}deg)`;
+
+      const hours = now.getHours();
+      const hoursDegrees = ((hours / 12) * 360) + ((minutes/60)*30) + 90;
+      hoursHand.style.transform = `rotate(${hoursDegrees}deg)`;      
+    }
+
+    setInterval(setDate, 1000);
+
+    setDate();
+  </script>
+</body>
+</html>
diff --git a/03 - CSS Variables/index-PRACTICE.html b/03 - CSS Variables/index-PRACTICE.html
@@ -0,0 +1,76 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>Scoped CSS Variables and JS</title>
+  <link rel="icon" href="https://fav.farm/🔥" />
+</head>
+<body>
+  <h2>Update CSS Variables with <span class='h1'>JS</span></h2>
+
+  <div class="controls">
+    <label for="spacing">Spacing:</label>
+    <input id="spacing" type="range" name="spacing" min="10" max="200" value="10" data-sizing="px">
+
+    <label for="blur">Blur:</label>
+    <input id="blur" type="range" name="blur" min="0" max="25" value="10" data-sizing="px">
+
+    <label for="base">Base Color</label>
+    <input id="base" type="color" name="base" value="#ffc600">
+  </div>
+
+  <img src="https://source.unsplash.com/7bwQXzbF6KE/800x500">
+
+  <style>
+    :root {
+      --base: #ffc600;
+      --spacing: 10px;
+      --blur: 10px;
+    }
+
+    img{
+      padding: var(--spacing);
+      background: var(--base);
+      filter: blur(var(--blur));
+    }
+
+    .h1{
+      color: var(--base);
+    }
+
+    /*
+      misc styles, nothing to do with CSS variables
+    */
+
+    body {
+      text-align: center;
+      background: #193549;
+      color: white;
+      font-family: 'helvetica neue', sans-serif;
+      font-weight: 100;
+      font-size: 50px;
+    }
+
+    .controls {
+      margin-bottom: 50px;
+    }
+
+    input {
+      width: 100px;
+    }
+  </style>
+
+  <script>
+    const inputs = document.querySelectorAll(".controls input");
+
+    function handleUpdate(){
+      const suffix = this.dataset.sizing || '';
+      document.documentElement.style.setProperty(`--${this.name}`, this.value + suffix);
+    }
+
+    inputs.forEach((input) => input.addEventListener("change", handleUpdate));
+    inputs.forEach((input) => input.addEventListener("mousemove", handleUpdate));
+  </script>
+
+</body>
+</html>
diff --git a/04 - Array Cardio Day 1/index-PRACTICE.html b/04 - Array Cardio Day 1/index-PRACTICE.html
@@ -0,0 +1,109 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>Array Cardio 💪</title>
+  <link rel="icon" href="https://fav.farm/🔥" />
+</head>
+<body>
+  <p><em>Psst: have a look at the JavaScript Console</em> 💁</p>
+  <script>
+    // Get your shorts on - this is an array workout!
+    // ## Array Cardio Day 1
+
+    // Some data we can work with
+
+    const inventors = [
+      { first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 },
+      { first: 'Isaac', last: 'Newton', year: 1643, passed: 1727 },
+      { first: 'Galileo', last: 'Galilei', year: 1564, passed: 1642 },
+      { first: 'Marie', last: 'Curie', year: 1867, passed: 1934 },
+      { first: 'Johannes', last: 'Kepler', year: 1571, passed: 1630 },
+      { first: 'Nicolaus', last: 'Copernicus', year: 1473, passed: 1543 },
+      { first: 'Max', last: 'Planck', year: 1858, passed: 1947 },
+      { first: 'Katherine', last: 'Blodgett', year: 1898, passed: 1979 },
+      { first: 'Ada', last: 'Lovelace', year: 1815, passed: 1852 },
+      { first: 'Sarah E.', last: 'Goode', year: 1855, passed: 1905 },
+      { first: 'Lise', last: 'Meitner', year: 1878, passed: 1968 },
+      { first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }
+    ];
+
+    const people = [
+      'Bernhard, Sandra', 'Bethea, Erin', 'Becker, Carl', 'Bentsen, Lloyd', 'Beckett, Samuel', 'Blake, William', 'Berger, Ric', 'Beddoes, Mick', 'Beethoven, Ludwig',
+      'Belloc, Hilaire', 'Begin, Menachem', 'Bellow, Saul', 'Benchley, Robert', 'Blair, Robert', 'Benenson, Peter', 'Benjamin, Walter', 'Berlin, Irving',
+      'Benn, Tony', 'Benson, Leana', 'Bent, Silas', 'Berle, Milton', 'Berry, Halle', 'Biko, Steve', 'Beck, Glenn', 'Bergman, Ingmar', 'Black, Elk', 'Berio, Luciano',
+      'Berne, Eric', 'Berra, Yogi', 'Berry, Wendell', 'Bevan, Aneurin', 'Ben-Gurion, David', 'Bevel, Ken', 'Biden, Joseph', 'Bennington, Chester', 'Bierce, Ambrose',
+      'Billings, Josh', 'Birrell, Augustine', 'Blair, Tony', 'Beecher, Henry', 'Biondo, Frank'
+    ];
+
+    // Array.prototype.filter()
+    // 1. Filter the list of inventors for those who were born in the 1500's
+    const fifteenHundreds = inventors.filter(inventor => (inventor.year >=1500 && inventor.year<1600));
+    console.table(fifteenHundreds);
+
+    // Array.prototype.map()
+    // 2. Give us an array of the inventors first and last names
+    const firstAndLastNames = inventors.map(inventor => inventor.first+" "+inventor.last);
+    console.table(firstAndLastNames);
+
+    // Array.prototype.sort()
+    // 3. Sort the inventors by birthdate, oldest to youngest
+    const sortedByBD = inventors.sort((first, second) => first.year > second.year ? 1: -1);
+    console.table(sortedByBD);
+
+    // Array.prototype.reduce()
+    // 4. How many years did all the inventors live all together?
+    const totalYearsLivedByAll = inventors.reduce((total, inventor) => total + (inventor.passed - inventor.year), 0);
+    console.log(totalYearsLivedByAll);
+
+    // 5. Sort the inventors by years lived
+    const sortedByYearsLived = inventors.sort((first,second) => ((first.passed - first.year) < (second.passed - second.year)) ? 1 : -1);
+    console.table(sortedByYearsLived);
+
+    // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
+    // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
+    // const parent = document.querySelector('.mw-category');
+    // const links = Array.from(parent.querySelectorAll('a'));
+    // const names = links.map(link => link.title);
+    // const deNames = names.filter(name => name.includes('de'));
+    // console.log(deNames);
+
+    // 7. sort Exercise
+    // Sort the people alphabetically by last name
+
+    // Bruteforce(aka dumb) solution
+    // const sortedByLastName = people.sort((first,second) => {
+    //   const firstSplit = first.split(',');
+    //   const nextFirstSplit = firstSplit[1].split(' ');
+    //   const firstLastName = nextFirstSplit[1];
+
+    //   const secondSplit = second.split(',');
+    //   const nextSecondSplit = secondSplit[1].split(' ');
+    //   const secondLastName = nextSecondSplit[1]; 
+
+    //   return (firstLastName > secondLastName) ? 1 : -1;
+    // })
+
+    // better solution
+    const sortedByLastName = people.sort((first,second) => first.split(', ')[0] > second.split(', ')[0] ? 1 : -1);
+    console.table(sortedByLastName);
+
+    // 8. Reduce Exercise
+    // Sum up the instances of each of these
+    const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
+    // const counts = data.reduce((accumulator, current) => {
+    //   accumulator[current] = (accumulator.hasOwnProperty(current) ? (accumulator[current] + 1) : 1);
+    //   return accumulator;
+    // }, {})
+
+    const counts = data.reduce((accumulator, current) =>{
+      if(!accumulator.hasOwnProperty(current))
+      accumulator[current] = 0;
+      accumulator[current]++;
+      return accumulator;
+    }, {})
+    console.log(counts);
+
+  </script>
+</body>
+</html>