What happens if the Portal container is not present in the DOM?AThe Portal will not be renderedBAn error will be thrownCThe Portal will be rendered in the body of the HTML documentDThe Portal will be rendered in the same parent as the component that uses it
Question
What happens if the Portal container is not present in the DOM?AThe Portal will not be renderedBAn error will be thrownCThe Portal will be rendered in the body of the HTML documentDThe Portal will be rendered in the same parent as the component that uses it
Solution
The answer is A: The Portal will not be rendered.
Here's the step by step explanation:
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A Portal in React is a way to render children into a DOM node that exists outside the DOM hierarchy of the parent component.
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The Portal container is the DOM node into which the Portal renders.
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If the Portal container is not present in the DOM, React will not be able to find the node to render the Portal into.
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Therefore, the Portal will not be rendered.
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React will not throw an error if the Portal container is not present in the DOM. It will simply not render the Portal.
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Similar Questions
When might you use a portal in React?AWhen you want to hide a component from the parent component.BWhen you need to optimize the rendering performance of a component.CWhen you want to render a component at the top level of the DOM or in a specific container outside of the current component.DWhen you want to create a separate instance of a component.
What HTML code will be generated when this component is rendered?
Can you pass props to a component rendered within a Portal?AYes, by passing them as the second argument to createPortal()BYes, by using context to pass data to the componentCNo, props cannot be passed to components within PortalsDYes, by setting the props directly on the child component
Which lifecycle method is invoked immediately after a component is inserted into the DOM?
What is the HTML DOM?
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