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Javascript Questions Set 246:

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The primary categories of components in React Router are:

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What is the purpose of the Script tab?

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What will be the output of the following code snippet:

var result = true + true + true * 2; console.log(result);

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What is the property to access the first child of a node?

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When will the browser invoke the event handler?

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What does the usedJsHeapSize property indicate?

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Which of the following methods is used to access HTML elements using Javascript?

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What is the name of the React lifecycle method called just before rendering takes place in the DOM?

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If X is the superclass and Y is the subclass, then how can the subclass inherit the superclass?

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What is a Virtual DOM?

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