检查多个复选框时过滤数据

问题描述 投票:1回答:1

[当前,在我的应用程序中,用户可以通过输入游戏名称来搜索游戏名称。当他们开始键入结果时,将使用filter方法更新结果。我现在正尝试使用多个复选框来做同样的事情。因此,例如,当用户检查playstation和或xbox时,结果仅显示这些类别的游戏。当他们取消选中时,结果将使用更新的值刷新。

目前,我已经为所有复选框成功创建了更改事件,并将其值推送到filter.categories数组。我遇到的问题是我不知道如何将该数组连接到现有的过滤器方法。我需要某种方式遍历数组,并将当前值与我的store对象中的category.name进行比较,以查看它们是否匹配。是否可以在filter方法内部进行?有什么想法我要去哪里吗?

提前感谢。

html:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    <aside>
        <ul>
            <li>
                <label>
                    <input type="checkbox" value="playstation" class="category-cb">
                    <span>Playstation</span>
                </label>
                <li>
                    <label>
                        <input type="checkbox" value="xbox" class="category-cb">
                        <span>Xbox</span>
                    </label>
                </li>
                <li>
                    <label>
                        <input type="checkbox" value="nintendo" class="category-cb">
                        <span>Nintendo</span>
                    </label>
                </li>
            </li>
        </ul>
    </aside>
    <main>
        <input type="text" class="store-search" placeholder="Search">
        <ul class="grid"></ul>
    </main>

    <script src="app.js"></script>
</body>
</html>

js:

/*----------------------------
    data
----------------------------*/

const stores = [{
    id: 0,
    name: 'The Last Of Us',
    studio: 'Naughtydog',
    thumbnail: '',
    category: {
        id: 0,
        name: 'Playstation'
    },
    price: 50.00
}, {
    id: 1,
    name: 'Animal Crossing',
    studio: 'Nintendo',
    thumbnail: '',
    category: {
        id: 1,
        name: 'Nintendo'
    },
    price: 60.00
}, {
    id: 2,
    name: 'Gears 5',
    studio: 'The Coalition',
    thumbnail: '',
    category: {
        id: 2,
        name: 'Xbox'
    },
    price: 10.00
}, {
    id: 3,
    name: 'DOOM Eternal',
    studio: 'id Software',
    thumbnail: '',
    category: {
        id: 3,
        name: 'Playstation'
    },
    price: 50.00
}, {
    id: 4,
    name: 'The Legend of Zelda: Link\'s Awakening',
    studio: 'Grezzo',
    thumbnail: '',
    category: {
        id: 4,
        name: 'Nintendo'
    },
    price: 35.00
}, {
    id: 5,
    name: 'Resident Evil 3',
    studio: 'Capcom',
    thumbnail: '',
    category: {
        id: 5,
        name: 'Playstation'
    },
    price: 40.00
}];

let filters = {
    searchText: '',
    categories: []
}

/*----------------------------
    functions
----------------------------*/

let filterStores = function (stores, filters) {

    let filteredStores = stores.filter(function (store) {
        let storeName = store.name.toLowerCase().includes(filters.searchText.toLowerCase());
        return storeName;
    });

    let grid = document.querySelector('.grid');
    grid.innerHTML = '';

    filteredStores.forEach(function (store) {
        let li = document.createElement('li');
        li.textContent = store.name;
        grid.appendChild(li);
    });
}

/*----------------------------
    events
----------------------------*/

document.addEventListener('DOMContentLoaded', function () {
    filterStores(stores, filters);

    document.querySelector('.store-search').addEventListener('input', function (event) {
        filters.searchText = event.target.value;
        filterStores(stores, filters);
    });

    document.querySelectorAll('.category-cb').forEach(function (checkbox) {
        checkbox.addEventListener('change', function (event) {
            if (checkbox.checked) {
                filters.categories.push(event.target.value);
                filterStores(stores, filters);
                console.log(filters.categories);
            }
        });
    });
});

https://jsfiddle.net/bjgp0ux4/

javascript
1个回答
0
投票

/*----------------------------
    data
----------------------------*/

const stores = [{
    id: 0,
    name: 'The Last Of Us',
    studio: 'Naughtydog',
    thumbnail: '',
    category: {
        id: 0,
        name: 'Playstation'
    },
    price: 50.00
}, {
    id: 1,
    name: 'Animal Crossing',
    studio: 'Nintendo',
    thumbnail: '',
    category: {
        id: 1,
        name: 'Nintendo'
    },
    price: 60.00
}, {
    id: 2,
    name: 'Gears 5',
    studio: 'The Coalition',
    thumbnail: '',
    category: {
        id: 2,
        name: 'Xbox'
    },
    price: 10.00
}, {
    id: 3,
    name: 'DOOM Eternal',
    studio: 'id Software',
    thumbnail: '',
    category: {
        id: 3,
        name: 'Playstation'
    },
    price: 50.00
}, {
    id: 4,
    name: 'The Legend of Zelda: Link\'s Awakening',
    studio: 'Grezzo',
    thumbnail: '',
    category: {
        id: 4,
        name: 'Nintendo'
    },
    price: 35.00
}, {
    id: 5,
    name: 'Resident Evil 3',
    studio: 'Capcom',
    thumbnail: '',
    category: {
        id: 5,
        name: 'Playstation'
    },
    price: 40.00
}];

let filters = {
    searchText: '',
    categories: new Set
}

/*----------------------------
    functions
----------------------------*/

let filterStores = function (stores, filters) {

    let filteredStores = stores.filter(store => (
        store.name.toLowerCase().includes(filters.searchText.toLowerCase()) &&
        (
            filters.categories.has(store.category.name.toLowerCase()) ||
            filters.categories.size === 0 //No selected categories, show all
        )
    ));

    let grid = document.querySelector('.grid');
    grid.innerHTML = '';

    filteredStores.forEach(function (store) {
        let li = document.createElement('li');
        li.textContent = store.name;
        grid.appendChild(li);
    });
}

/*----------------------------
    events
----------------------------*/

document.addEventListener('DOMContentLoaded', function () {
    filterStores(stores, filters);

    document.querySelector('.store-search').addEventListener('input', function (event) {
        filters.searchText = event.target.value;
        filterStores(stores, filters);
    });

    document.querySelectorAll('.category-cb').forEach(function (checkbox) {
        checkbox.addEventListener('change', function (event) {
            if (checkbox.checked) {
                filters.categories.add(event.target.value);
            } else {
                filters.categories.delete(event.target.value);
            }
            filterStores(stores, filters);
        });
    });
});
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    <aside>
        <ul>
            <li>
                <label>
                    <input type="checkbox" value="playstation" class="category-cb">
                    <span>Playstation</span>
                </label>
            </li>
            <li>
                <label>
                    <input type="checkbox" value="xbox" class="category-cb">
                    <span>Xbox</span>
                </label>
            </li>
            <li>
                <label>
                    <input type="checkbox" value="nintendo" class="category-cb">
                    <span>Nintendo</span>
                </label>
            </li>
        </ul>
    </aside>
    <main>
        <input type="text" class="store-search" placeholder="Search">
        <ul class="grid"></ul>
    </main>

    <script src="app.js"></script>
</body>
</html>
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