ToDo list app using JavaScript:-
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css"
integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<title>ToDo List</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">ToDo List</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button"
data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Items
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Contact</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<div class="container my-4">
<h2 class="text-center">ToDo List</h2>
<div class="form-group">
<label for="title">Title</label>
<input type="text" class="form-control" id="title" aria-describedby="emailHelp">
<medium id="emailHelp" class="form-text text-muted">Add a task to the list
</medium>
</div>
<div class="form-group">
<label for="description">Description</label>
<textarea class="form-control" id="description" rows="3"></textarea>
</div>
<button id="add" class="btn btn-primary">Add to List</button>
<button id="clear" class="btn btn-primary" onclick="clearStorage()">Clear List</button>
<div id="items" class="my-4">
<h2> Your Items </h2>
<table class="table">
<thead>
<tr>
<th scope="col">SrNo</th>
<th scope="col">Item title</title>
</th>
<th scope="col">Item Description</th>
<th scope="col">Action</th>
</tr>
</thead>
<tbody id="tableBody">
<tr>
<th scope="row">1</th>
<td>Get some coffee</td>
<td>You need coffee as you are a coder</td>
<td><button class="btn btn-sm btn-primary">Delete</button>
</tr>
</tbody>
</table>
</div>
</div>
<!-- Optional JavaScript; choose one of the two! -->
<!-- Option 1: jQuery and Bootstrap Bundle (includes Popper) -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx"
crossorigin="anonymous"></script>
<script>
function getAndUpdate() {
console.log("Updating List...");
tit = document.getElementById('title').value;
desc = document.getElementById('description').value;
if (localStorage.getItem('itemsJson') == null) {
itemsJsonArray = [];
itemsJsonArray.push([tit, desc]);
localStorage.setItem('itemsJson', JSON.stringify(itemsJsonArray));
}
else {
itemsJsonArrayStr = localStorage.getItem('itemsJson');
itemsJsonArray = JSON.parse(itemsJsonArrayStr);
itemsJsonArray.push([tit, desc]);
localStorage.setItem('itemsJson', JSON.stringify(itemsJsonArray));
}
update();
}
function update() {
if (localStorage.getItem('itemsJson') == null) {
itemsJsonArray = [];
localStorage.setItem('itemsJson', JSON.stringify(itemsJsonArray));
}
else {
itemsJsonArrayStr = localStorage.getItem('itemsJson');
itemsJsonArray = JSON.parse(itemsJsonArrayStr);
}
// Populate the table
let tableBody = document.getElementById("tableBody")
let str = "";
itemsJsonArray.forEach((element, index) => {
str += `
<th scope="row">${index + 1}</th>
<td>${element[0]}</td>
<td>${element[1]}</td>
<td><button class="btn btn-sm btn-primary" onclick="deleted(${index})">Delete</button>
</tr>`;
});
tableBody.innerHTML = str;
}
add = document.getElementById("add");
add.addEventListener("click", getAndUpdate);
update();
function deleted(itemIndex) {
console.log("Delete", itemIndex)
itemsJsonArrayStr = localStorage.getItem('itemsJson');
itemsJsonArray = JSON.parse(itemsJsonArrayStr);
itemsJsonArray.splice(itemIndex, 1);
// Delete item index from the array
localStorage.setItem('itemsJson', JSON.stringify(itemsJsonArray));
update();
}
function clearStorage() {
if (confirm("Do you really want to clear all tasks?")) {
console.log('Clearing the storage');
localStorage.clear();
update();
}
}
</script>
<!-- Option 2: jQuery, Popper.js, and Bootstrap JS
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.min.js" integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s" crossorigin="anonymous"></script>
</body>
</html>
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