Knowee
Questions
Features
Study Tools

What will be the output of the following code snippet?import React, { useState, useEffect } from "react";import axios from "axios";function App() { const [users, setUsers] = useState([]); const [error, setError] = useState(""); useEffect(() => {   async function getUsers() {     try {       const result = await axios.get("https://jsonplaceholder.typicode.com/users");       setUsers(result.data);     } catch (error) {       setError(error.message);     }   }   getUsers(); }, []); return (   <div>     {error && <div>{error}</div>}     {users.map((user) => (       <div key={user.id}>{user.name}</div>     ))}   </div> );}export default App;AIt will display the list of users fetched from the API (if no error is thrown)BIt will throw an errorCIt will display the error message returned from the API (if error is thrown from API)DBoth A and C

Question

What will be the output of the following code snippet?import React, { useState, useEffect } from "react";import axios from "axios";function App() { const [users, setUsers] = useState([]); const [error, setError] = useState(""); useEffect(() => {   async function getUsers() {     try {       const result = await axios.get("https://jsonplaceholder.typicode.com/users");       setUsers(result.data);     } catch (error) {       setError(error.message);     }   }   getUsers(); }, []); return (   <div>     {error && <div>{error}</div>}     {users.map((user) => (       <div key={user.id}>{user.name}</div>     ))}   </div> );}export default App;AIt will display the list of users fetched from the API (if no error is thrown)BIt will throw an errorCIt will display the error message returned from the API (if error is thrown from API)DBoth A and C

...expand
🧐 Not the exact question you are looking for?Go ask a question

Solution

The correct answer is D. Both A and C. This code is a simple React component that fetches data from an API using the axios library. It uses the useState hook to manage the state for users and error, and the useEffect hook to perform the side effect of fetching the data when the component mounts. If the API call is successful, it will display the list of users. If an error is thrown during the API call, it will display the error message.

This problem has been solved

Similar Questions

useEffect(()=>{ console.log(‘hello’)},[state1,state2]])Which statement is true for the above code?

Consider the below code snippet:function Sample() { const [name,setName] = useState("Jack") const [age,setAge] = useState(20) useEffect(()=>{ console.log("use Effect called") },[age]) return ( <div> <h1>Your Name is: {name}</h1><br/> <h1>Your Age is: {age} </h1><br/> <button onClick={()=>setName("Tom")}>Change Name</button> <button onClick={()=>setAge(age+1)}>Change Age</button> </div> );}How many times the "use Effect called" will be logged to the console when the change Name button and Change Age button is clicked 3 times each?6745

Mily wants to fetch the list of product data from a backend API. Received data will be set as the state of a component i.e. in 'result'. Which of the following code snippets will help her in achieving this requirement? (Assume all required set up is given) const[result,setResult] = useState("") axios.get(“api_url”).subscribe(res => setResult(result)) axios.fetch(“api_url”).then(res => setResult({result : res})) axios.get(“api_url”).then(res => setResult(res.data) ) axios.fetch(“api_url”).then(res => setResult(res.data))

Choose the correct statements about the below code: const [name,setName]= useState('') const [age,setAge] = useState(0) useEffect(()=>{ console.log("useEffect method called") },[age]) useEffect will be called whenever name and age state changes useEffect is invoked once after initial render and then everytime when age state changes useEffect is invoked once once after initial render useEffect is not invoked

What is the output of the following code snippet?function ParentComponent() { const data = { name: "John Doe", age: 30 }; return ( <div> <ChildComponent data={data}> <h3>This is a child element</h3> </ChildComponent> </div> ); } function ChildComponent(props) { const { name, age } = props.data; return ( <div> <h2>Name: {name}</h2> <h2>Age: {age}</h2> {props.children} </div> ); }AName: John Doe Age: 30This is a child elementBName: undefined Age: undefinedThis is a child elementCName: null Age: nullThis is a child elementDSyntax error

1/1

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.