Test-javascript/Actividad 4.html at master · Juann0708/Test-javascript · GitHub

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<!DOCTYPE html>
<html lang="es-ES">

<head>
    <title>Comentarios</title>
    <meta charset="utf-8" />

    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" integrity="sha384-fLW2N01lMqjakBkx3l/M9EahuwpSfeNvV63J5ezn3uZzapT0u7EYsXMjQV+0En5r" crossorigin="anonymous">
</head>

<body>

    <div class="container">
        <div class="row">
            <div class="col-xs-12">

                <h1 class="jumbotron">Comentarios</h1>

                <table id="grid" class="table table-striped">
                    <thead>
                        <tr>
                            <th>Nombre</th>
                            <th>Comentario</th>
                            <th>Edad</th>
                            <th style="width:80px;">

                            </th>
                        </tr>
                        <tr>
                            <th>
                                <input id="name" type="text" class="form-control" />
                            </th>
                            <th>
                                <input id="com" type="text" class="form-control" />
                            </th>
                            <th>
                                <input id="age" type="text" class="form-control" />
                            </th>
                            <th>
                                <button id="btn-add" class="btn btn-default">Agregar</button>
                            </th>
                        </tr>
                    </thead>
                    <tbody></tbody>
                </table>
            </div>
        </div>
    </div>

    <script>
        window.onload = function () {
            var localStorageKeyName = 'data';

            loadFromLocalStorage();

            document.querySelector("#btn-add").addEventListener('click', function () {
                var name = document.getElementById("name"),
                    com = document.getElementById("com"),
                    age = document.getElementById("age");

                // Validate
                if (name.value.length === 0 || com.value.length === 0 || !parseInt(age.value)) return;

                var user = {
                    name: name.value,
                    com: com.value,
                    age: age.value
                };

                // Clean data
                name.value = '';
                com.value = '';
                age.value = '';

                // Append to my localStorage
                appendObjectToLocalStorage(user);
            })

            function appendObjectToLocalStorage(obj) {
                var users = [],
                    dataInLocalStorage = localStorage.getItem(localStorageKeyName);

                if (dataInLocalStorage !== null) {
                    users = JSON.parse(dataInLocalStorage);
                }

                users.push(obj);

                localStorage.setItem(localStorageKeyName, JSON.stringify(users));

                loadFromLocalStorage();
            }

            function loadFromLocalStorage() {
                var users = [],
                    dataInLocalStorage = localStorage.getItem(localStorageKeyName),
                    gridBody = document.querySelector("#grid tbody");

                if (dataInLocalStorage !== null) {
                    users = JSON.parse(dataInLocalStorage);
                }

                // Draw TR from TBODY
                gridBody.innerHTML = '';

                users.forEach(function (x, i) {
                    var tr = document.createElement("tr"),
                        tdName = document.createElement("td"),
                        tdCom = document.createElement("td"),
                        tdAge = document.createElement("td"),
                        tdRemove = document.createElement("td"),
                        btnRemove = document.createElement("button");

                    tdName.innerHTML = x.name;
                    tdCom.innerHTML = x.com;
                    tdAge.innerHTML = x.age;

                    btnRemove.textContent = 'Borrar';
                    btnRemove.className = 'btn btn-xs btn-danger';
                    btnRemove.addEventListener('click', function(){
                        removeFromLocalStorage(i);
                    });

                    tdRemove.appendChild(btnRemove);

                    tr.appendChild(tdName);
                    tr.appendChild(tdCom);
                    tr.appendChild(tdAge);
                    tr.appendChild(tdRemove);

                    gridBody.appendChild(tr);
                });
            }

            function removeFromLocalStorage(index){
                var users = [],
                    dataInLocalStorage = localStorage.getItem(localStorageKeyName);

                users = JSON.parse(dataInLocalStorage);

                users.splice(index, 1);

                localStorage.setItem(localStorageKeyName, JSON.stringify(users));

                loadFromLocalStorage();
            }
        }
    </script>
</body>

</html>