Salesforce Exam B2B-Commerce-Developer Topic 1 Question 48 Discussion

Actual exam question for Salesforce's B2B-Commerce-Developer exam

Question #: 48
Topic #: 1

What are two purposes of the Shadow DOM in a Lightning web component?

AIt encapsulates the internal document object model (DOM) structure of a web component

BIt allow components to be shared while protecting them from being manipulated by arbitrary code

CIt allows direct access to the document object model of the component

DIt allows older JavaScript libraries to manipulate the tagging structure
According to theLightning Web Components Developer Guide, Shadow DOM is a standard that encapsulates the internal document object model (DOM) structure of a web component. Encapsulating the DOM gives developers the ability to share a component and protect the component from being manipulated by arbitrary HTML, CSS, and JavaScript. Shadow DOM also provides style and behavior isolation for a web component, which means that the styles and scripts defined inside a component do not affect the rest of the page, and vice versa. Therefore, the purposes of the Shadow DOM in a Lightning web component are to encapsulate the internal DOM structure of a web component (A) and to allow components to be shared while protecting them from being manipulated by arbitrary code (B). The other options are incorrect because Shadow DOM does not allow direct access to the document object model of the component , nor does it allow older JavaScript libraries to manipulate the tagging structure (D). Reference:Lightning Web Components Developer Guide,Understand the Shadow DOM Unit

Show Suggested Answer

Suggested Answer: A, B

by Andra at Feb 08, 2024, 03:51 AM

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Carry

2 months ago

Yes, that's another purpose. It allows sharing while maintaining encapsulation

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Amber

2 months ago

But isn't it also for allowing components to be shared securely?

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Lucina

3 months ago

I agree with Carry, it helps protect the component's structure from external manipulation

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Carry

3 months ago

I think the purpose of Shadow DOM is to encapsulate the internal DOM structure

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Lenora

3 months ago

Exactly! That's one of the main reasons for using the Shadow DOM.

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Glendora

3 months ago

Haha, D is a good one! I can just imagine some old-school devs trying to wrestle with the Shadow DOM.

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Brittni

3 months ago

C) Haha, D is a good one! I can just imagine some old-school devs trying to wrestle with the Shadow DOM.

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Carmela

3 months ago

B) It allow components to be shared while protecting them from being manipulated by arbitrary code

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Dannie

3 months ago

A) It encapsulates the internal document object model (DOM) structure of a web component

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Bernadine

3 months ago

Definitely A and B. The Shadow DOM is crucial for maintaining the integrity and reusability of web components.

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Annita

3 months ago

I think A and B are the correct answers. The Shadow DOM is all about isolating the internal structure of a component.

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Vincent

3 months ago

A and B seem to be the most relevant purposes of the Shadow DOM. Encapsulation and protecting components from external manipulation are key benefits.

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Isaiah

2 months ago

B) It allow components to be shared while protecting them from being manipulated by arbitrary code

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Albert

3 months ago

A) It encapsulates the internal document object model (DOM) structure of a web component

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Mauricio

3 months ago

B) It allow components to be shared while protecting them from being manipulated by arbitrary code

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Gertude

3 months ago

A) It encapsulates the internal document object model (DOM) structure of a web component

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Darrel

4 months ago

It also allows components to be shared without the risk of them being altered by other code, right?

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Beckie

4 months ago

Yeah, that ensures that the styles and functionality of the component are isolated from the rest of the page.

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Lenora

4 months ago

I think the Shadow DOM is used to encapsulate the internal structure of a web component.

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