Fullstack LPU
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1. Which statement execute the code of main.js
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2. In Nodejs what is use of underscore variable in REPL session
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3. What will be the output of the following code?
const res = [‘1’, ‘1a’, ‘0’, -1, true, false].map(Number).filter(Boolean);
console.log(res);
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4. What is Babel?
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5. _____ is an interactive shell that processes Node.
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6. Which of the following statements are true?
1. NodeJS is multithreaded.
2. The Buffer class is a global class that can be accessed without importing a buffer module.
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7. When does a stream fire a data event?
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8. Identify the smallest building block of React.js
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9. What the output of the given code
const promise1 = new Promise((resolve, reject) => { console.log(1); resolve('success') });
promise1.then(() => console.log(3)); console.log(4);
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10. Why is ref used?
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11. The parameters in order that a middleware function receives are:
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12. Which of the following is used to access a function fetch() from h1 element in JSX?
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13. We can kill a process in Node.js using the keyboard shortcut?
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14. What is the correct difference between TypeScript and JavaScript?
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15. The function which is called to render HTML to a web page in react?
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16. Which of the following class is used to create and consume custom events in Node.js?
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17. What is used to handle code-splitting?
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18. When setState() is called inside render() method, which of the following events takes place?
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19. How can we expose node modules?
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20. To install Node.js express module
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