Uncovering the inherent worth of an item pulled from a remote location using Vue.js

Question

Uncovering the inherent worth of an item pulled from a remote location using Vue.js

Currently, I am retrieving a list of countries by making an API call in VueX. The fetched data is then stored in a state using a mutation.

Essentially, the countries are saved in a variable known as this.$state.getters.countryList, which can be accessed from a component. My goal is to check if a particular variable exists in this list.

To achieve this, I employ the following method:

this.$store.getters.countryList.indexOf('usa')

.

While I am certain that 'usa' is included in the list, the result always returns as -1.

In an attempt to debug and retrieve the actual value of this.$state.getters.countryList, I utilize

console.log(this.$state.getters.countryList)

, but the console output shows [__ob__: Observer].

My objective is illustrated below:

  mounted() {
    if (this.$store.getters.countryList.indexOf('usa')) {
       //Do something
      }
  }

How can I extract the real value of this.$state.getters.countryList and use it efficiently with indexOf() for conducting further checks or actions?

javascript vue.js vuex

Answer 1

Answer №1

When you fetch data from an external API, it is important to remember that this operation is asynchronous. This means that the data may not be immediately available when you need it, as pointed out by @Phil.

To ensure that your set of instructions runs only once the fetch operation is complete and the countryList is loaded, you can implement a watcher:

In your store.js, assume that your countryList is initially set to null in the store:

export const state = () => ({
 countryList: null
})

In the mounted() hook of your component, you would set up the watcher like this:

mounted() {
 this.$store.watch(
  state => state.countryList,
  (value) => {
   if (value) { 
     // Execute instructions once countryList is loaded 
   }
  }
 )
}

Answer 2

When you fetch data from an external API, it is important to remember that this operation is asynchronous. This means that the data may not be immediately available when you need it, as pointed out by @Phil.

To ensure that your set of instructions runs only once the fetch operation is complete and the countryList is loaded, you can implement a watcher:

In your store.js, assume that your countryList is initially set to null in the store:

export const state = () => ({
 countryList: null
})

In the mounted() hook of your component, you would set up the watcher like this:

mounted() {
 this.$store.watch(
  state => state.countryList,
  (value) => {
   if (value) { 
     // Execute instructions once countryList is loaded 
   }
  }
 )
}

Uncovering the inherent worth of an item pulled from a remote location using Vue.js

Answer №1

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