Looking for a way to choose an Object using the key value in VueJS?

Question

Looking for a way to choose an Object using the key value in VueJS?

In my Vuejs setup, there is an object containing various fields including an email value which looks like this: "[email protected]".

{
      "fields": [
        {
          "label": "email",
          "value": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="5e3831311e3c3f2c703d3133">[email protected]</a>", 
        },
        {
          "label": "firstName",
          "value": "Foo", 
        },
        {
          "label": "lastName",
          "value": "Bar", 
        },
      ]
     }

One possible way to extract the email field only is by using a v-for loop and adding a conditional statement.

v-for(field in fields)

We can then check if the label matches 'email' and display its value.

<div v-if="field.label == 'email'">{{field.value}}</div>

However, I am looking for a more efficient method to directly select the email field without looping through the entire object.

I've attempted approaches like:

fields(label, 'email')
// and
v-if fields.label == 'email'

javascript vue.js select v-for

Answer 1

Answer №1

To simplify the process, consider creating a computed map that links field labels with their corresponding values

computed: {
  fieldMap () {
    return Object.fromEntries(this.fields.map(({ label, value }) => [ label, value ]))
  }
}

You can then access specific fields like this:

<div>{{ fieldMap.email }}</div>

If you're primarily working with one field, create a computed property for easier access

computed: {
  emailField () {
    let field = this.fields.find(({ label }) => label === 'email')
    return field ? field.value : ''
  }
}

You can then display the field using:

<div>{{ emailField }}</div>

Answer 2

To simplify the process, consider creating a computed map that links field labels with their corresponding values

computed: {
  fieldMap () {
    return Object.fromEntries(this.fields.map(({ label, value }) => [ label, value ]))
  }
}

You can then access specific fields like this:

<div>{{ fieldMap.email }}</div>

If you're primarily working with one field, create a computed property for easier access

computed: {
  emailField () {
    let field = this.fields.find(({ label }) => label === 'email')
    return field ? field.value : ''
  }
}

You can then display the field using:

<div>{{ emailField }}</div>

Answer 3

Answer №2

To determine if the key currently being displayed corresponds to the 'email' label's own index, you can utilize a conditional check.

It is important to note that this approach will only be effective in this specific scenario where we are already aware of the object's precise values.

<div v-for="(field, index) in fields" :key="index">
  <div v-if="index === 0">
    {{ field.value }}
  </div>
  <div v-else>
    Not email: {{ field.value }}
  </div>
</div>

Answer 4

To determine if the key currently being displayed corresponds to the 'email' label's own index, you can utilize a conditional check.

It is important to note that this approach will only be effective in this specific scenario where we are already aware of the object's precise values.

<div v-for="(field, index) in fields" :key="index">
  <div v-if="index === 0">
    {{ field.value }}
  </div>
  <div v-else>
    Not email: {{ field.value }}
  </div>
</div>

Looking for a way to choose an Object using the key value in VueJS?

Answer №1

Answer №2

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