![Node.js CI](https://github.com/dritter/extended-table/workflows/Node.js%20CI/badge.svg) ![Performance Tests](https://github.com/dritter/extended-table/workflows/Continuous%20Performance%20Tests/badge.svg)

Usage no npm install needed!

<script type="module">
  import extendedTable from 'https://cdn.skypack.dev/extended-table';



Node.js CI Performance Tests


    import ExtendedTable from "extended-table";
    let rows = [
        { startnumber: {number: 1}},
        { startnumber: {number: 2}},
        { startnumber: {number: 3}},
        { startnumber: {number: 4}},
    let columnDefinition = [
            title: 'Start&shy;number',
            propertyPath: 'startnumber.number'

<ExtendedTable columns={columnDefinition} data={rows}>


Have a look at the examples folder.



To make a column sortable, set sortable: true in the column definition. The column needs to have a property path set to make sorting work.

Initial sorting could be controlled via the props initialSortBy and initialSortDirection, where initialSortBy is a property path (string).

In case you want to allow sorting only one column, you need to set multisort={false}.

Flexible Rendering

The easiest way to render a column is to provide a propertyPath. This could even be in a nested Object. Have a look at deep-value to see more ways how to express paths.

To render slightly more complex data you could specify value, that needs to be a function:

    value: (rowData, rowIndex, columnIndex) => `Place ${rowIndex + 1}: ${rowData.name}`

If this is not enough, you could render columns as slots. You could currently specify no more than 20 slots due to a limitation in Svelte. All slots are named column-X, X being the number:

<ExtendedTable columns={columnDefinition} data={rows}>
    <div slot="column-1" let:data={person} let:rowIndex={index}>
        <Person person="{person}" on:edited={event => setValue(event.detail, index)}></Person>

Of course, all three ways can be combined per Table. On a column level you have to decide on one way.

Flexible CSS Classes

Have a look at the theming example where this is explained.


To specify what happens when you click on a Row, you could set the onRowClick property. This should be a callback function.

For controlling what happens if you click a table cell, you could add a clickHandler on the column definition.

Collapsible Columns

If you have very large columns, you can render them as collapsible by setting collapsed: false on the column definition.

Auto collapse Columns

When autoCollapse={true} is set, all Columns that are outside of the screen are collapsed automatically. You still could collapse other columns manually, if you want.

Sticky Headers

Just set the stickyHeaders={true} prop, and you are ready. Please note, that specifying an overflow on a parent element will break the stickyness.

Additionally, you could define an offset, if you use fixed elements above (like a navigation header). Set stickyOffset="100px".


This component aims for comfort more than for performance. So if you want to display thousands of rows, you may run into performance issues.


How to add an extra row with colspan?

This could be done, if you fill the slot additionalRow. You'll get the data as rowData. Example:

    <tr slot="additionalRow" let:rowData={crew} class="keep-together">
        <td colspan="7">
            <MyOtherComponent myProp={crew} />

How can I expand all collapsed columns on first click?

If you set expandAll={true}, all collapsed columns will expand at once.

Why is there no pagination?

IMHO, putting a pagination into this component would be too much. This should be done from outside.

How can I filter rows?

Like pagination this should be done from the outside. So its up to you to add a filter.

How can I use my own sorting function?

To use your own sorting function, you can set sortingFunction={yourSortFunction} property. This function gets called when you click on a header column. Parameters are:

  • column (Object) - the current column that was clicked on
  • columns (array) - All columns
  • data (array) - The rows
  • multisort (boolean) - true, if sorting for multiple columns is enabled
  • clearCacheCallback (function) - Callback to clear the caches


See Troubleshooting Guide.


Currently there are three dependencies:


See here