Day 10: Add a "check all inbetween"

dandenney · dandenney · commit 28a477977bc6 · 2016-12-19T21:19:38.000-05:00
This is so rad. We were supposed to try it on our own and I didn't
write the code but I mapped out how I thought I should to it. While
I was in range, my solution was way more complex. I thought I needed
to make arrays to determine order, but flipping a variable was so
much better.
diff --git a/10 - Hold Shift and Check Checkboxes/day-10.html b/10 - Hold Shift and Check Checkboxes/day-10.html
@@ -0,0 +1,109 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>Document</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;
+    }
+
+    .details {
+      text-align: center;
+      font-size: 15px;
+    }
+
+
+  </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 inbetween should also be set to checked</p>
+    </div>
+    <div class="item">
+      <input type="checkbox">
+      <p>Try do it with out 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 src="day-10.js"></script>
+
+</body>
+</html>
diff --git a/10 - Hold Shift and Check Checkboxes/day-10.js b/10 - Hold Shift and Check Checkboxes/day-10.js
@@ -0,0 +1,41 @@
+function selectAll () {
+
+  // Private variables
+  const checkboxes = document.querySelectorAll('input[type="checkbox"]');
+  let lastChecked;
+
+  // Add event listeners
+  checkboxes.forEach( checkbox => checkbox.addEventListener ('click', handleCheck) );
+
+  // Handle check
+  function handleCheck (e) {
+
+    // If they had the shift key down
+    // And if they are checking it
+    if ( e.shiftKey && this.checked ) {
+
+      let inBetween = false;
+
+      // loop over all checkboxes
+      checkboxes.forEach ( checkbox => {
+
+        // True starts at first or last checked
+        // Flips inBetween to to true until first or last checked
+        if ( checkbox === this || checkbox === lastChecked ) {
+          inBetween = !inBetween;
+        }
+
+        // Checks the boxes that have been flipped to true
+        if ( inBetween ) {
+          checkbox.checked = true;
+        }
+
+      });
+    }
+
+    lastChecked = this;
+  }
+
+}
+
+selectAll();
