How do you implement client-side pagination in JavaScript?
Load all data upfront. Slice for the current page: const start = (page - 1) * pageSize; const pageData = allData.slice(start, start + pageSize). Calculate totalPages: Math.ceil(allData.length / pageSize). Render and paginate instantly.
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More FAQs in Client-Side vs Server-Side Pagination in JavaScript
Client-side: load all data upfront, slice with array.slice in the browser. Fast page switches, slow initial load, high memory. Server-side: fetch one page at a time from the API. Fast initial load, network delay on page switch, low memory.
For large datasets (> 1000 items). Server-side fetches only the current page, so the initial load is fast and memory is low. It scales to millions of items. The tradeoff is network latency on each page switch.
For small datasets (< 1000 items). Client-side loads all data at once, so page switches are instant (just array.slice). The tradeoff is a slow initial load and high memory. Good for static data or offline apps.
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