React & Modern Frontend (445 Qs)•Part 1: Core React, JSX & Component Architecture (1 - 77)
Why fragments are better than container divs?
Below are the list of reasons to prefer fragments over container DOM elements,
- Fragments are a bit faster and use less memory by not creating an extra DOM node. This only has a real benefit on very large and deep trees.
- Some CSS mechanisms like Flexbox and CSS Grid have a special parent-child relationships, and adding divs in the middle makes it hard to keep the desired layout.
- The DOM Inspector is less cluttered.
Practical Code Example
jsx
// Fragment vs Div: Avoids invalid HTML tables and unnecessary CSS Flex/Grid wrapper bugs
function TableColumns() {
return (
<>
<td>First Column</td>
<td>Second Column</td>
</>
);
}