Vue - receiving the output of a synchronous function

Question

Vue - receiving the output of a synchronous function

I'm having difficulty displaying the synchronous results of the method provided below.

I am invoking the method from another method:

var result = this.getVendor(id)
console.log(result)

Below is the fetch method code:

methods: {
    async getData(id) {
          const response = await fetch(`${API_URL}api/${id}`, {
            method: "GET",
            headers: {
              authorization: `Bearer ${localStorage.token}`
            }
          })
            .then(res => res.json())
            .then(data => {
              return data;
            });

          await response;
        }
}

What is the best way to return the response results from the getData() function in order to display it in the console?

javascript vue.js vuejs2

Answer 1

Answer №1

Async functions Always result in a promise being returned.

One can utilize the await syntax to ensure it is returned correctly.

    async fetchData(id) {
          const response = await fetch(`${API_URL}api/${id}`, {
            method: "GET",
            headers: {
              authorization: `Bearer ${localStorage.token}`
            }
          })
           const data = await response.json()

           return data
        }

The data can be accessed outside of the function wherever it is invoked.

let data = null
object.getData(2)
.then(x => {
data = x
})

Furthermore, when utilizing async await, it is crucial to implement try and catch blocks to handle any potential errors.

    async fetchData(id) {
       try {
          const response = await fetch(`${API_URL}api/${id}`, {
            method: "GET",
            headers: {
              authorization: `Bearer ${localStorage.token}`
            }
          })
           const data = await response.json()

           return data
        }
      } catch(err) {
    console.error(err)
    }

Answer 2

Async functions Always result in a promise being returned.

One can utilize the await syntax to ensure it is returned correctly.

    async fetchData(id) {
          const response = await fetch(`${API_URL}api/${id}`, {
            method: "GET",
            headers: {
              authorization: `Bearer ${localStorage.token}`
            }
          })
           const data = await response.json()

           return data
        }

The data can be accessed outside of the function wherever it is invoked.

let data = null
object.getData(2)
.then(x => {
data = x
})

Furthermore, when utilizing async await, it is crucial to implement try and catch blocks to handle any potential errors.

    async fetchData(id) {
       try {
          const response = await fetch(`${API_URL}api/${id}`, {
            method: "GET",
            headers: {
              authorization: `Bearer ${localStorage.token}`
            }
          })
           const data = await response.json()

           return data
        }
      } catch(err) {
    console.error(err)
    }

Vue - receiving the output of a synchronous function

Answer №1

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