React Developer Interview Questions

3,475 react developer interview questions shared by candidates

Create a signup page and store the details and use the same details to login , give error message when credential doesn't match . Redirect after login to a home page which should be having a button on clicking should show up a details about company(I used Modal). An API was sent to which i had to list of all movies. Then another linking to which I had to open a link in the inbuilt browser or an external browser.

React Native Developer

Interviewed at Geeksynergy Technologies

3.6
Aug 11, 2020

Create a signup page and store the details and use the same details to login , give error message when credential doesn't match . Redirect after login to a home page which should be having a button on clicking should show up a details about company(I used Modal). An API was sent to which i had to list of all movies. Then another linking to which I had to open a link in the inbuilt browser or an external browser.

Take home assignment. The interviewer sent instructions to build a simple page for searching & filtering the reviews of an App available on the app store. Had to use their API and could use and library and framework to build the project.
avatar

Junior React JS Developer

Interviewed at Appfigures

3.9
Oct 9, 2019

Take home assignment. The interviewer sent instructions to build a simple page for searching & filtering the reviews of an App available on the app store. Had to use their API and could use and library and framework to build the project.

Write a function changeKey(obj, oldKey, newKey) that recursively replaces all occurrences of oldKey with newKey in an object or array. Do not change the key if it is "id". let obj = { id: 7373, data: [ { type: "1", id: 73 }, { name: "xyz", type: "23", vas_id: 73, x_data: [{ id: 72, data: { xx_data: { id: 673, a: ["id"] } } }, "id"], }, "abc", "id", 123, { id: { data: 123, id: ["a", "b"] } }, ], };
avatar

Front End React Developer

Interviewed at Fragma Data Systems

4.3
Nov 6, 2024

Write a function changeKey(obj, oldKey, newKey) that recursively replaces all occurrences of oldKey with newKey in an object or array. Do not change the key if it is "id". let obj = { id: 7373, data: [ { type: "1", id: 73 }, { name: "xyz", type: "23", vas_id: 73, x_data: [{ id: 72, data: { xx_data: { id: 673, a: ["id"] } } }, "id"], }, "abc", "id", 123, { id: { data: 123, id: ["a", "b"] } }, ], };

1. What will be the output of the following code? let i = 1; function incrementByValue(value) { i += value; return i; } function limit(fn, maxCalls) { let calls = 0; return function (...args) { if (calls < maxCalls) { calls += 1; return fn(...args); } return undefined; }; } const callbytimes = limit(incrementByValue, 2); console.log(callbytimes(2)); console.log(callbytimes(3)); console.log(callbytimes(4)); console.log(callbytimes(10));
avatar

Front End React Developer

Interviewed at Fragma Data Systems

4.3
Nov 6, 2024

1. What will be the output of the following code? let i = 1; function incrementByValue(value) { i += value; return i; } function limit(fn, maxCalls) { let calls = 0; return function (...args) { if (calls < maxCalls) { calls += 1; return fn(...args); } return undefined; }; } const callbytimes = limit(incrementByValue, 2); console.log(callbytimes(2)); console.log(callbytimes(3)); console.log(callbytimes(4)); console.log(callbytimes(10));

Initial Phone Screen questions: 1. what is Redux? 2. What is difference between class components and functional components? second Round - coding test: write a code to make a Rest API call to get the data to display the data in a table and apply sorting to the table.
avatar

Senior React Developer

Interviewed at Cardinal Intellectual Property

3.6
Oct 26, 2020

Initial Phone Screen questions: 1. what is Redux? 2. What is difference between class components and functional components? second Round - coding test: write a code to make a Rest API call to get the data to display the data in a table and apply sorting to the table.

Viewing 131 - 140 interview questions

See Interview Questions for Similar Jobs

Glassdoor has 3,475 interview questions and reports from React developer interviews. Prepare for your interview. Get hired. Love your job.