What is the best way to implement date range filtering in vue js?

Question

What is the best way to implement date range filtering in vue js?

Currently, I am delving into the realm of vue.js and experimenting with a filtering feature that involves date ranges. The process goes like this: initially filter by type, then proceed to filter by a specified date range, consisting of start and end dates. The search results are expected to show up once the end date has been selected. While I have successfully implemented the first part of the filter for types and it is functioning correctly, I am encountering challenges when trying to implement the date range filter. I have scoured through various resources but haven't yet found the ideal solution. How can I effectively filter date ranges using either 'computed' or 'methods'? If anyone out there possesses the knowledge on this subject matter, could you please provide me with a detailed, step-by-step guide?

 // Vue.js code snippet here...

 // CSS code snippet here...

javascript vue.js vuejs2

Answer 1

Answer №1

One way to resolve this issue is:

Initialize startDate and endDate as Date objects. Keep in mind that the date picker uses an ISO string format (yyyy-mm-dd), which is in UTC. However, the data provides dates in locale-specific format (mm/dd/yyyy). To ensure consistent time zone offsets, normalize the dates before comparing them:
```
methods: {
  localizeDate(date) {
    if (!date || !date.includes('-')) return date
    const [yyyy, mm, dd] = date.split('-')
    return new Date(`${mm}/${dd}/${yyyy}`)
  }
}
```
```
let startDate = this.localizeDate(this.startDate);
let endDate = this.localizeDate(this.endDate);
```
In your if-else statements, you are checking for null explicitly. Since you're creating Date instances, they won't be null. After implementing step 1, the dates will either be a valid Date object or false. Update your comparisons to check for falsy values instead of null:
```
if (startDate && endDate) {/*...*/}
if (startDate && !endDate) {/*...*/}
if (!startDate && endDate) {/*...*/}
```
The variable selectedType will never be null, but you can check if it's falsy to determine if the type is unspecified. If it is unspecified, you can return the original array without filtering it unnecessarily:
```
const itemsByType = filterType ? this.items.filter(item => item.type === filterType) : this.items
```
To display the date in the format MMM dd, yyyy, you can utilize the "long" date style provided by Intl.DateTimeFormat. Implement this functionality in a component method and call it from the template:
```
methods: {
  formatDate(date) {
    return new Intl.DateTimeFormat('en-US', { dateStyle: 'long' }).format(new Date(date))
  }
}
```
```
<p>Date: {{ formatDate(item.date) }}</p>
```

new Vue({
  el: '#app',
  data: {
    selectedType: '',
    startDate:null,
    endDate:null,
    items: [
      {
        name: 'Nolan',
        type: 'mercedes',
        year: '2020',
        country: 'england',
        date: '08/01/2020'
      },
      {
        name: 'Edgar',
        type: 'bmw',
        year: '2020',
        country:'belgium',
        date: '08/11/2020'
      },
      {
        name: 'John',
        type: 'bmw',
        year: '2019',
        country: 'england',
        date: '08/21/2020'
      },
      {
        name: 'Axel',
        type: 'mercedes',
        year: '2020',
        country: 'england',
        date: '08/01/2020'
      }
    ]
  },
  computed: {
    filterItem() {
      let filterType = this.selectedType;
      let startDate = this.localizeDate(this.startDate);
      let endDate = this.localizeDate(this.endDate);
      
      const itemsByType = filterType ? this.items.filter(item => item.type === filterType) : this.items
      return itemsByType
        .filter(item => {
          const itemDate = new Date(item.date)
          if (startDate && endDate) {
            return startDate <= itemDate && itemDate <= endDate;
          }
          if (startDate && !endDate) {
            return startDate <= itemDate;
          }
          if (!startDate && endDate) {
            return itemDate <= endDate;
          }
          return true;
        })
    }
  },
  methods: {
    localizeDate(date) {
      // Normalize ISO format dates from date picker with locale specific format provided in the data
      // For comparison with local timezone
      if (!date || !date.includes('-')) return date
      const [yyyy, mm, dd] = date.split('-')
      return new Date(`${mm}/${dd}/${yyyy}`)
    },
    formatDate(date) {
      return new Intl.DateTimeFormat('en-US', { dateStyle: 'long' }).format(new Date(date))
    }
  }
})

.list-item {
  margin-top: 50px;
}

.card {
  box-shadow: 0px 10px 16px rgba(0, 0, 0, 0.16);
  width: 400px;
  padding: 20px 30px;
  margin-bottom: 30px;
}

select,input {
  border: none;
  padding: 10px 15px;
  background-color: #c1c1c1;
  border-radius: 10px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>

<div id="app">
  <label for="">Type</label>
  <select v-model="selectedType">
    <option value="" disabled selected hidden>Type</option>
    <option value="mercedes">Mercedes</option>
    <option value="bmw">BMW</option>
  </select>
  
  <label for="">From</label>
  <input type="date" v-model="startDate">
  
  <label for="">To</label>
  <input type="date" v-model="endDate">
  
  <div class="list-item" v-for="item in filterItem">
    <div class="card">
      <p>Name: {{ item.name }}</p>
      <p>Car: {{ item.type }}</p>
      <p>Date: {{ formatDate(item.date) }}</p>
      <p>Country: {{ item.country }}</p>
    </div>
  </div>
</div>

Answer 2

One way to resolve this issue is:

Initialize startDate and endDate as Date objects. Keep in mind that the date picker uses an ISO string format (yyyy-mm-dd), which is in UTC. However, the data provides dates in locale-specific format (mm/dd/yyyy). To ensure consistent time zone offsets, normalize the dates before comparing them:
```
methods: {
  localizeDate(date) {
    if (!date || !date.includes('-')) return date
    const [yyyy, mm, dd] = date.split('-')
    return new Date(`${mm}/${dd}/${yyyy}`)
  }
}
```
```
let startDate = this.localizeDate(this.startDate);
let endDate = this.localizeDate(this.endDate);
```
In your if-else statements, you are checking for null explicitly. Since you're creating Date instances, they won't be null. After implementing step 1, the dates will either be a valid Date object or false. Update your comparisons to check for falsy values instead of null:
```
if (startDate && endDate) {/*...*/}
if (startDate && !endDate) {/*...*/}
if (!startDate && endDate) {/*...*/}
```
The variable selectedType will never be null, but you can check if it's falsy to determine if the type is unspecified. If it is unspecified, you can return the original array without filtering it unnecessarily:
```
const itemsByType = filterType ? this.items.filter(item => item.type === filterType) : this.items
```
To display the date in the format MMM dd, yyyy, you can utilize the "long" date style provided by Intl.DateTimeFormat. Implement this functionality in a component method and call it from the template:
```
methods: {
  formatDate(date) {
    return new Intl.DateTimeFormat('en-US', { dateStyle: 'long' }).format(new Date(date))
  }
}
```
```
<p>Date: {{ formatDate(item.date) }}</p>
```

new Vue({
  el: '#app',
  data: {
    selectedType: '',
    startDate:null,
    endDate:null,
    items: [
      {
        name: 'Nolan',
        type: 'mercedes',
        year: '2020',
        country: 'england',
        date: '08/01/2020'
      },
      {
        name: 'Edgar',
        type: 'bmw',
        year: '2020',
        country:'belgium',
        date: '08/11/2020'
      },
      {
        name: 'John',
        type: 'bmw',
        year: '2019',
        country: 'england',
        date: '08/21/2020'
      },
      {
        name: 'Axel',
        type: 'mercedes',
        year: '2020',
        country: 'england',
        date: '08/01/2020'
      }
    ]
  },
  computed: {
    filterItem() {
      let filterType = this.selectedType;
      let startDate = this.localizeDate(this.startDate);
      let endDate = this.localizeDate(this.endDate);
      
      const itemsByType = filterType ? this.items.filter(item => item.type === filterType) : this.items
      return itemsByType
        .filter(item => {
          const itemDate = new Date(item.date)
          if (startDate && endDate) {
            return startDate <= itemDate && itemDate <= endDate;
          }
          if (startDate && !endDate) {
            return startDate <= itemDate;
          }
          if (!startDate && endDate) {
            return itemDate <= endDate;
          }
          return true;
        })
    }
  },
  methods: {
    localizeDate(date) {
      // Normalize ISO format dates from date picker with locale specific format provided in the data
      // For comparison with local timezone
      if (!date || !date.includes('-')) return date
      const [yyyy, mm, dd] = date.split('-')
      return new Date(`${mm}/${dd}/${yyyy}`)
    },
    formatDate(date) {
      return new Intl.DateTimeFormat('en-US', { dateStyle: 'long' }).format(new Date(date))
    }
  }
})

.list-item {
  margin-top: 50px;
}

.card {
  box-shadow: 0px 10px 16px rgba(0, 0, 0, 0.16);
  width: 400px;
  padding: 20px 30px;
  margin-bottom: 30px;
}

select,input {
  border: none;
  padding: 10px 15px;
  background-color: #c1c1c1;
  border-radius: 10px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>

<div id="app">
  <label for="">Type</label>
  <select v-model="selectedType">
    <option value="" disabled selected hidden>Type</option>
    <option value="mercedes">Mercedes</option>
    <option value="bmw">BMW</option>
  </select>
  
  <label for="">From</label>
  <input type="date" v-model="startDate">
  
  <label for="">To</label>
  <input type="date" v-model="endDate">
  
  <div class="list-item" v-for="item in filterItem">
    <div class="card">
      <p>Name: {{ item.name }}</p>
      <p>Car: {{ item.type }}</p>
      <p>Date: {{ formatDate(item.date) }}</p>
      <p>Country: {{ item.country }}</p>
    </div>
  </div>
</div>

Answer 3

Answer №2

This particular inquiry pertains more to JavaScript rather than Vue.js. It is recommended to utilize the Date type instead of the string type for date data. For instance,

new Date('2020-01-01') < new Date('2020-01-02')

evaluates to true

  computed: {
    filterItem: function () {
      const filterType = this.selectedType  // string or null
      const startDate = this.startDate;    // Date or null
      const endDate = this.endDate;  // Date or null
      
      return this.items.filter(item => {
        if (filterType === null) return true;  // when filterType not selected
        return item.type == filterType;
      }).filter(item => {
        const itemDate = new Date(item.date)
        if (startDate !== null && endDate !== null)) {
          return startDate <= itemDate && itemDate <= endDate;
        }
        if (startDate !== null && endDate === null) {
          return startDate <= itemDate;
        }
        if (startDate === null && endDate !== null) {
          return                          itemDate <= endDate;
        }
        return true;  // when neither startDate nor endDate selected
      })
    }

Answer 4

This particular inquiry pertains more to JavaScript rather than Vue.js. It is recommended to utilize the Date type instead of the string type for date data. For instance,

new Date('2020-01-01') < new Date('2020-01-02')

evaluates to true

  computed: {
    filterItem: function () {
      const filterType = this.selectedType  // string or null
      const startDate = this.startDate;    // Date or null
      const endDate = this.endDate;  // Date or null
      
      return this.items.filter(item => {
        if (filterType === null) return true;  // when filterType not selected
        return item.type == filterType;
      }).filter(item => {
        const itemDate = new Date(item.date)
        if (startDate !== null && endDate !== null)) {
          return startDate <= itemDate && itemDate <= endDate;
        }
        if (startDate !== null && endDate === null) {
          return startDate <= itemDate;
        }
        if (startDate === null && endDate !== null) {
          return                          itemDate <= endDate;
        }
        return true;  // when neither startDate nor endDate selected
      })
    }

What is the best way to implement date range filtering in vue js?

Answer №1

Answer №2

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