React Questions

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112

React Questions

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1. Which attribute is React’s replacement for using innerHTML in the browser DOM?

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2. What is a react.js in MVC?

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3. Which is not true about Virtual DOM in React JS?

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4. React components are composed to create a user interface. How are components composed?

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5. Why should you avoid copying the values of props into a component’s state?

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6. In React.js which one of the following is used to create a class for Inheritance 

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7. What are the limitations of ReactJS?

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8. What is the correct syntax to import a Component from React?

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9.  Which of the following is method is not a part of ReactDOM?

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10. Props are __________ into other components

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11. What helps react for keeping their data unidirectional.?

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12. Which of the following is NOT a rule for React Hooks?

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13. Find the bug in this code :

  function car({make, model}) {
  return < h1 > {make} {model} < /h1 > ;
}; 

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14. Which of the following is true about the below syntax ?disabled = {false}

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15. What happens when the following render() method executes?

render(){
   let langs = ["PHP","ES6","JAVA"]
     return ( < div>
       {langs.map(it =>  < p > {it}  < /p > )}
      < /div > )
 }

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Written by Shubhranshu Shekhar, who has trained 20000+ students in coding.

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