ReactJS › ReactJS - Keys and Ref › Question #4342
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QWe can go for ________ when there is a possibility that our user could change the data.

ID: #4342 ReactJS - Keys and Ref 447 views
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#4342Q ID
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ReactJS - Keys and RefTopic
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  • A Ref ✔ ✖
  • B Both the options ✔ ✖
  • C Keys ✔ ✖
  • D None of the options ✔ ✖
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Explanation

Keys

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Batching of multiple setState() calls in a single update is possible. To Prevent firing of the component's lifecycle methods you can use null from render method. An altered component may be uniquely identified with the help of ref. If you create an element, you cannot change its ________. Ref is used to refer an/a element/component returned by _______________. If our elements are dynamic, React can keep track of the changes using keys. Which lifecycle event is invoked before rendering and when new props or state is being received? Keys used within arrays should be globally unique.