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132 lines
3.2 KiB
Markdown
132 lines
3.2 KiB
Markdown
---
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title: Virtualized Table
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lang: en-US
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---
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# Virtualized Table
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Along with the evolutionary web development, table component has always been the most popular component in our web apps especially for dashboards, data analysis. For [Table V1](./table.md), with even just 1000 records of data, it can be very annoying when using it, because the poor performance.
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With Virtualized Table, you can render massive chunks of data in a blink of an eye.
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:::tip
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**Even though** Virtualized Table is efficient, but when the data load is too big, your **network**, **memory size** can be the bottle neck of your app. So keep in mind that Virtualized Table is never the ultimate solution for everything, consider paginate your data, add filters etc.
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:::
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## Basic usage
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Let's render a basic case of Virtualized Table with 10 columns by 1000 rows, to demonstrate how performant it is.
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:::demo
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table-v2/basic
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:::
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## Customize Cell Renderer
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Of course, you can render the table cell per your needs, here is a simple example of how to customize your cell.
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:::demo
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table-v2/cell-templating
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:::
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## Table with status
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You can highlight your table content to distinguish between "success, information, warning, danger" and other states.
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Use `row-class-name` to customize how the row looks. In this case, every 10th row will be highlighted with `bg-blue-200` class, every 5th row will be highlighted with `bg-red-100` class.
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:::demo
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table-v2/row-class
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:::
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## Table with sticky rows
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You can make some rows stick to the top of the table, and that can be very easily achieved by using `fixed-data` attribute.
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You can add dynamically set the sticky row with scroll events like this example did.
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:::demo
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table-v2/sticky-rows
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:::
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## Table with fixed columns
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For some reason, you want to make the columns stick on the left and right, you can do that by adding special attributes for table.
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You can set the column's attribute `fixed` to `true` (representing `FixedDir.LEFT`) or `FixedDir.LEFT` or `FixedDir.RIGHT`
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:::demo
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table-v2/fixed-columns
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:::
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## Grouping header
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By customizing your header renderer you can group your header like this example did.
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:::tip
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In this case we used `JSX` feature which is not supported in the playground, you may try them out in your local environment or online IDEs such as `codesandbox`.
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It is recommended that you write your table component in JSX, since it contains VNode manipulations.
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:::
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:::demo
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table-v2/grouping-header
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:::
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## Filter
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Virtualized Table providers customizing header renderers for rendering customized header, then we can use that to render filters
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:::demo
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table-v2/filter
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:::
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## Colspan
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Virtualized table did not use built-in `table` element, so that `colspan` and `rowspan` is a little bit different than [TableV1](./table.md). With customized row renderer, we can still do that. In this case, you'll learn how to do that.
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:::demo
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table-v2/colspan
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:::
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## Rowspan
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Since we have [Colspan](#colspan) of course we have row span as well, it is a little bit different than colspan but the idea
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is basically the same.
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:::demo
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table-v2/rowspan
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:::
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## Rowspan and Colspan together
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We can combine rowspan and colspan together to meet your business goal!
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:::demo
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table-v2/spans
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:::
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