Fill in the blank: The ___________ is a combination of both the DOM and CSSOM.

render tree

Largest Contentful Paint

Cumulative Layout Shift

Critical Rendering Path


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Explanation: The correct answer is render tree. In web development, the render tree is a crucial concept representing the combination of both the DOM (Document Object Model) and the CSSOM (Cascading Style Sheets Object Model). While the DOM represents the structure of the HTML content on a web page, and the CSSOM represents the styles applied to that content, the render tree merges these two models to create a cohesive structure that incorporates both the content and its styling. The render tree includes only the elements that will be displayed on the page, taking into account factors such as visibility, display property, and CSS properties like display: none. This combined representation is essential for the browser’s rendering engine to calculate the layout of the page accurately and determine how each element should be displayed visually. Thus, the render tree serves as the foundation for the browser’s rendering process, ensuring that the web page is presented to users correctly according to its HTML structure and CSS styles.

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