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HTML

              
                <html>
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width">

    <title>Silly story generator</title>

    <style>

    body {
      font-family: helvetica, sans-serif;
      width: 350px;
    }

    label {
      font-weight: bold;
    }

    div {
      padding-bottom: 20px;
    }

    input[type="text"] {
      padding: 5px;
      width: 150px;
    }

    p {
      background: #FFC125;
      color: #5E2612;
      padding: 10px;
      visibility: hidden;
    }

    </style>
  </head>

  <body>
    <div>
      <label for="customname">Enter custom name:</label>
      <input id="customname" type="text" placeholder="">
    </div>
    <div>
      <label for="us">US</label><input id="us" type="radio" name="ukus" value="us" checked>
      <label for="uk">UK</label><input id="uk" type="radio" name="ukus" value="uk">
    </div>
    <div>
      <button class="randomize">Generate random story</button>
    </div>
    <p class="story"></p>
  </body>
</html>

              
            
!

CSS

              
                
              
            
!

JS

              
                
    const customName = document.getElementById('customname');
    const randomize = document.querySelector('.randomize');
    const story = document.querySelector('.story');

    function randomValueFromArray(array){
      const random = Math.floor(Math.random()*array.length);
      return array[random];
      }

      let storyText = "It was 94 fahrenheit outside, so :insertx: went for a walk. When they got to :inserty:, they stared in horror for a few moments, then :insertz:. Bob saw the whole thing, but was not surprised — :insertx: weighs 300 pounds, and it was a hot day."
      let insertX = ["Willy the Goblin", "Big Daddy", "Father Christmas"];
      let insertY = ["the soup kitchen", "Disneyland", "the White House"];
      let insertZ = ["spontaneously combusted", "melted into a puddle on the sidewalk", "turned into a slug and crawled away"];

      randomize.addEventListener('click', result);

    function result() {
      let newStory = story;
      let xItem = randomValueFromArray(insertX);
      let yItem = randomValueFromArray(insertY);
      let zItem = randomValueFromArray(insertZ);
      newStory = newStory.replace(":insertx:", xItem);
      newStory = newStory.replace(":insertx:", xItem);
      newStory = newStory.replace(":inserty:", yItem);
      newStory = newStory.replace(":insertz:", zItem);

      if(customName.value !== '') {
        let name = customName.value;
        newStory = newStory.replace("Bob", name);
      }

      if(document.getElementById("uk").checked) {
        let weight = Math.round(300 * 0.071428639017158) + "stones";
        let temperature =  Math.round((94-32)*(5/9)) + "centigrade";
        newStory = newStory.replace("94 fahrenheit", temperature);
        newStory = newStory.replace("300 pounds", weight);
      }

      story.textContent = newStory;
      story.style.visibility = 'visible';
    }
    document.querySelector('html').style.backgroundColor = 'gray';
              
            
!
999px

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