Theo's Typesafe Cult•2y ago

dumb async questions

Hi, I never really was able to deeply await promises and async functions. I have a couple of questions on error handling. (axios) How can I save a variable from an async get or post using .then on the top scope. Is it possible to error handle an await statement instead of it always crashing my run

3 Replies

chnmrn.•2y ago

i think u need to use try and catch. if it throw res status other than 2xx example: 401 or 500, it will be threated as error and the response or json they send back will go to err.response.data iirc(try consolelog)

fox-foxivich•2y ago

you can do something like that

import axios from "axios"

const getSomeResponse = () => {
  return axios
    .get("https://www.grepper.com/api/get_answers_1.php?v=4&s=axios&u=1300987")
    .then((response) => response.data)
}

const yourCode = async () => {
  let yourResponse

  try {
    const response = await getSomeResponse()
    yourResponse = response
  } catch (error) {
    console.error(error)
  }
}

const yourCodeWithThens = () => {
  let yourResponse

  getSomeResponse()
    .then((response) => {
      yourResponse = response
    })
    .catch((error) => {
      console.error(error)
    })
}

import axios from "axios"

const getSomeResponse = () => {
  return axios
    .get("https://www.grepper.com/api/get_answers_1.php?v=4&s=axios&u=1300987")
    .then((response) => response.data)
}

const yourCode = async () => {
  let yourResponse

  try {
    const response = await getSomeResponse()
    yourResponse = response
  } catch (error) {
    console.error(error)
  }
}

const yourCodeWithThens = () => {
  let yourResponse

  getSomeResponse()
    .then((response) => {
      yourResponse = response
    })
    .catch((error) => {
      console.error(error)
    })
}

just create a variable in the scope above and in the then scope assign your response to the variable. And also there's try catch for errors with async/await and there's .catch() method in the regular promises

s☻dOP•2y ago

Thank you so much for the code snippets, I was trying to do the second example earlier but I ran into weird undefined issues. I just used try and catch to fix most of my issues

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dumb async questions