Creating a Vue.js data object with items arranged in descending order

Question

Creating a Vue.js data object with items arranged in descending order

While working with vue.js, I encountered an issue in sorting the items stored in my data object. Currently, they are sorted in ascending order and I need to display them in descending order instead. Below is a snippet of my vue template:

<div class="form-element form-element-checkbox" :key="key" v-for="(value, key) in items">
          <input
            :id="getID(value)"
            type="checkbox"
            :value="value"
            @change="updateFilter"
            v-model="selections"
            :checked="isSelected(value)">
          <label class="chk-small" :for="getID(value)">
            <span :aria-label="`Rated ${key}.0 out of 5`" class="star-rating noBlank" :style="{ width: `${key * 20}px` }"></span>
          </label>
        </div>

The current structure of the items object is as follows:

data() {
      return {
        items: {
          5: 'item_5',
          4: 'item_4',
          3: 'item_3'
        },
        selections: []
      };
    },

Even after attempting to utilize items.slice().reverse(), the desired ordering is not achieved. Any insights into what might be causing this discrepancy would be greatly appreciated.

javascript vue.js

Answer 1

Answer №1

If you find it difficult or unnecessary to convert your `items` dictionary into an array, you can simply utilize Object.keys() to extract its keys and manipulate them.

new Vue({
  el: '#app',
  data() {
    return {
      items: {
        // Note: even if you input them in descending order,
        // the JS engine will display them in ascending order.
        5: 'item_5',
        4: 'item_4',
        3: 'item_3',
      },
    };
  },
});

<script src="https://unpkg.com/vue@2"></script>

<div id="app">
  <p>itemsKeys: {{Object.keys(items)}}</p>
  <ol>
    <li v-for="(key, keyIndex) of Object.keys(items).reverse()">
      keyIndex: {{keyIndex}} / item key: {{key}} / item value: {{items[key]}}

    </li>
  </ol>
</div>

Answer 2

If you find it difficult or unnecessary to convert your `items` dictionary into an array, you can simply utilize Object.keys() to extract its keys and manipulate them.

new Vue({
  el: '#app',
  data() {
    return {
      items: {
        // Note: even if you input them in descending order,
        // the JS engine will display them in ascending order.
        5: 'item_5',
        4: 'item_4',
        3: 'item_3',
      },
    };
  },
});

<script src="https://unpkg.com/vue@2"></script>

<div id="app">
  <p>itemsKeys: {{Object.keys(items)}}</p>
  <ol>
    <li v-for="(key, keyIndex) of Object.keys(items).reverse()">
      keyIndex: {{keyIndex}} / item key: {{key}} / item value: {{items[key]}}

    </li>
  </ol>
</div>

Creating a Vue.js data object with items arranged in descending order

Answer №1

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