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added hold-shift-checkbox project #3

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Merged
merged 1 commit into from
Jul 9, 2025
Merged

added hold-shift-checkbox project #3

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38 changes: 38 additions & 0 deletions Hold Shift to Check Multiple Checkboxes/index.css
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body {
font-family: sans-serif;
padding: 2rem;
background: #f5f5f5;
}

.checkbox-list {
max-width: 320px;
margin: auto;
background: white;
padding: 1rem;
border-radius: 8px;
box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.checkbox-item {
display: flex;
align-items: center;
padding: 0.5rem 0;
outline: none;
border-radius: 4px;
}

.checkbox-item > input[type="checkbox"] {
cursor: pointer;
outline: none;
}

.checkbox-item:focus-within,
.checkbox-item.focused {
background-color: #e0f7fa;
}

.checkbox-item input {
margin-right: 0.5rem;
width: 20px;
height: 20px;
}
106 changes: 106 additions & 0 deletions Hold Shift to Check Multiple Checkboxes/index.html
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@@ -0,0 +1,106 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Shift Select with Keyboard</title>
<link rel="stylesheet" href="./index.css" />
</head>
<body>
<div class="checkbox-list" id="checkboxContainer">
<h2>Select Emails</h2>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 1</span>
</div>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 2</span>
</div>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 3</span>
</div>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 4</span>
</div>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 5</span>
</div>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 6</span>
</div>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 7</span>
</div>
<div class="checkbox-item" tabindex="0">
<input type="checkbox" /><span>Email 8</span>
</div>
</div>

<script>
const items = document.querySelectorAll(".checkbox-item");
let checkboxes = [...items].map((item) =>
item.querySelector('input[type="checkbox"]'),
);
let lastChecked = null;
let focusedIndex = 0;

function handleClick(e) {
let inBetween = false;

if (e.shiftKey && lastChecked) {
const start = checkboxes.indexOf(lastChecked);
const end = checkboxes.indexOf(this);

const [min, max] = [Math.min(start, end), Math.max(start, end)];
const isChecking = this.checked;

for (let i = min; i <= max; i++) {
checkboxes[i].checked = isChecking;
}
}

lastChecked = this;
}

checkboxes.forEach((checkbox) =>
checkbox.addEventListener("click", handleClick),
);

// Keyboard navigation
items.forEach((item, i) => {
item.addEventListener("keydown", (e) => {
if (e.key === "ArrowDown") {
e.preventDefault();
focusedIndex = Math.min(items.length - 1, focusedIndex + 1);
items[focusedIndex].focus();
} else if (e.key === "ArrowUp") {
e.preventDefault();
focusedIndex = Math.max(0, focusedIndex - 1);
items[focusedIndex].focus();
} else if (e.key === " " || e.key === "Spacebar") {
e.preventDefault();
const checkbox = items[focusedIndex].querySelector("input");
const wasChecked = checkbox.checked;
checkbox.checked = !wasChecked;

if (e.shiftKey && lastChecked) {
const current = checkboxes[focusedIndex];
const start = checkboxes.indexOf(lastChecked);
const end = checkboxes.indexOf(current);
const [min, max] = [Math.min(start, end), Math.max(start, end)];
for (let i = min; i <= max; i++) {
checkboxes[i].checked = !wasChecked;
}
}

lastChecked = checkboxes[focusedIndex];
}
});

item.addEventListener("focus", () => {
items.forEach((i) => i.classList.remove("focused"));
item.classList.add("focused");
focusedIndex = [...items].indexOf(item);
});
});
</script>
</body>
</html>
2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -104,7 +104,7 @@ All the JavaScript projects i did or wanted to do. Any contribution is appreciat
- [ ] Web Scrapping.
- [ ] Captcha Generator.
- [ ] CSS + JS Clock
- [ ] Hold Shift to Check Multiple Checkboxes
- [x] [Hold Shift to Check Multiple Checkboxes](./Hold Shift to Check Multiple Checkboxes) :tada:
- [ ] Custom HTML5 Video Player
- [ ] Key Sequence Detection (KONAMI CODE)
- [ ] Slide In on Scroll
Expand Down