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Finish challenge wesbos#9/wesbos#10 
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‎10 - Hold Shift and Check Checkboxes/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Hold Shift to Check Multiple Checkboxes</title>
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</head>
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<body>
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<style>
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html {
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font-family: sans-serif;
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background:#ffc600;
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}
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.inbox {
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max-width:400px;
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margin:50px auto;
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background:white;
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border-radius:5px;
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box-shadow:10px 10px 0 rgba(0,0,0,0.1);
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}
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.item {
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display:flex;
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align-items:center;
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border-bottom: 1px solid #F1F1F1;
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}
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.item:last-child {
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border-bottom:0;
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}
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input:checked + p {
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background:#F9F9F9;
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text-decoration: line-through;
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}
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input[type="checkbox"] {
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margin:20px;
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}
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p {
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margin:0;
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padding:20px;
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transition:background 0.2s;
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flex:1;
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font-family:'helvetica neue';
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font-size: 20px;
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font-weight: 200;
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border-left: 1px solid #D1E2FF;
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}
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</style>
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<!--
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The following is a common layout you would see in an email client.
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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.
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-->
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<div class="inbox">
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<div class="item">
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<input type="checkbox">
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<p>This is an inbox layout.</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Check one item</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Hold down your Shift key</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Check a lower item</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Everything inbetween should also be set to checked</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Try do it with out any libraries</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Just regular JavaScript</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Good Luck!</p>
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</div>
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<div class="item">
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<input type="checkbox">
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<p>Don't forget to tweet your result!</p>
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</div>
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</div>
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<script>
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const checkboxes = document.querySelectorAll('.inbox input[type="checkbox"]');
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let lastChecked;
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function handleCheck(e) {
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let inBetween = false;
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if (e.shiftKey && this.checked) {
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checkboxes.forEach(checkbox => {
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if (checkbox === this || checkbox === lastChecked) {
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inBetween = !inBetween;
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}
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if (inBetween) {
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console.info(checkbox);
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checkbox.checked = true;
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}
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});
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}
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if (this.checked) {
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lastChecked = this;
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}
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}
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checkboxes.forEach(checkbox => checkbox.addEventListener('click', handleCheck));
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</script>
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</body>
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</html>

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