10 - Hold Shift and Check Checkboxes/index-follow-along.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Hold Shift to Check Multiple Checkboxes</title>
</head>
<body>
  <style>

    html {
      font-family: sans-serif;
      background: #ffc600;
    }

    .inbox {
      max-width: 400px;
      margin: 50px auto;
      background: white;
      border-radius: 5px;
      box-shadow: 10px 10px 0 rgba(0,0,0,0.1);
    }

    .item {
      display: flex;
      align-items: center;
      border-bottom: 1px solid #F1F1F1;
    }

    .item:last-child {
      border-bottom: 0;
    }

    input:checked + p {
      background: #F9F9F9;
      text-decoration: line-through;
    }

    input[type="checkbox"] {
      margin: 20px;
    }

    p {
      margin: 0;
      padding: 20px;
      transition: background 0.2s;
      flex: 1;
      font-family:'helvetica neue';
      font-size: 20px;
      font-weight: 200;
      border-left: 1px solid #D1E2FF;
    }
  </style>
   <!--
   The following is a common layout you would see in an email client.

   When a user clicks a checkbox, holds Shift, and then clicks another checkbox a few rows down, all the checkboxes inbetween those two checkboxes should be checked.

  -->
  <div class="inbox">
    <div class="item">
      <input type="checkbox">
      <p>This is an inbox layout.</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Check one item</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Hold down your Shift key</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Check a lower item</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Everything in between should also be set to checked</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Try to do it without any libraries</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Just regular JavaScript</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Good Luck!</p>
    </div>
    <div class="item">
      <input type="checkbox">
      <p>Don't forget to tweet your result!</p>
    </div>
  </div>

<script>
    const checkboxes = document.querySelectorAll('.inbox input[type="checkbox"]');
    let lastChecked;
    let inBetween = false;
    function handleCheck(e){
        if(e.shiftKey && this.checked){
            checkboxes.forEach(checkbox => {
                console.log( checkbox );
                if(checkbox===this || checkbox === lastChecked){
                    inBetween = !inBetween;
                    
                    console.log("inbetween" )
                }

                if (inBetween){
                    console.log("checking")
                    checkbox.checked = true;
                }
            })
        }
        lastChecked = this;
    }
    checkboxes.forEach((checkbox)=>{
        checkbox.addEventListener('click', handleCheck)
    });
</script>
</body>
</html>