TableGenerator

TableGenerator

Generates and or Renders Tables (Markdown, CSS, HTML, or plain arrays)

NOTE: utils.table(...) is the same as new utils.TableGenerator(...)

For example:

utils.datasets.fetch('cars.json').then(results => cars = results);

utils.table(cars)
   .limit(2)
   .render();

Screenshot of simple example

//-- with many options to tailor and format the table

utils.table(cars)

   //-- sort by year field (descending), Displacement (descending), Name (ascending)
   .sort('-Year', '-Displacement', 'Name')
   
   //-- limit to only the first 10 records
   .limit(10)
   
   //-- add in a new field / column called Kilometer_per_Litre
   .augment({
        'Kilometer_per_Litre': (row) => row.Miles_per_Gallon * 0.425144
   })

   //-- specify the columns to show by list of fields
   .columns('Name', 'Kilometer_per_Litre', 'Cylinders', 'Displacement', 'Acceleration', 'Year')

   //-- format how a field / column is rendered by ({ property: fn })
   .format({
       Year: (value) => value ? value.slice(0,4) : value
   })

   //-- make specific column headers more legible with ({ property: header })
   .labels({
       'Kilometer_per_Litre': 'Km/L'
   })

   //-- high light rows and cells based on data
   .styleColumn({
     "Km/L": (value) => value > 10 ? 'background-color: #AAFFAA' : ''
   })
   .styleRow(({record}) => record.Name.includes('diesel')
            ? 'color: green;' : ''
   )

   .render()

Screenshot of complex example

Note that sticky headers are available when using the render() method. By default, it sets the height to 50vh - but this can be configured through height().

utils.table(cars)
  .height('300px')
  .render();

Screenshot of sticky headers

//-- note, `utils.table(...)`
//-- is the same as `new utils.TableGenerator(...)`
//-- and now available as of `1.12.0`

Types of calls:

Constructor

new TableGenerator(data)

Function to format a value for a cell

Example
data = [{temp: 37, type: 'C'}, {temp: 310, type: 'K'}, {temp: 98, type: 'F'}];

//-- simple example where the temp property is converted, and type property overwritten
new TableGenerator(data)
 .generateMarkdown()

//-- gives
temp | type
---- | ----
37   | C   
310  | K   
98   | F
Parameters:
Name Type Description
data Array.<Object>

collection of objects

Methods

augment(obj) → {TableGenerator}

Augments data with additional fields

(Convenience function to add additional values without augmenting the data.)

Note that doing a .map() on the dataset prior may have better performance but doing so may modify the dataset - where this would not.

Example
sourceData = [{id: 1, temp_F:98}, {id: 2, temp_F:99}, {id: 3, temp_F:100}];

utils.table(sourceData)
 .augment({
   temp_C: (row) => (row.temp_F - 32) * 0.5556,
   temp_K: (row) => (row.temp_F - 32) * 0.5556 + 1000
 })
 .generateMarkdown()

//-- provides:

id | temp_F | temp_C | temp_K
-- | ------ | ------ | ------
1  | 98     | 36.667 | 309.817
2  | 99     | 37.222 | 310.372
3  | 100    | 37.778 | 310.928
Parameters:
Name Type Description
obj Object

Object with properties to add to the result data

Properties
Name Type Description
newProperty function

Function per property to add

Properties
Name Type Description
record Object

Each record within data
Returns:
  • chainable instance
Type
TableGenerator

border(borderCSS)

Convenience function to set an a border on the Data Cells.

This only applies when rendering HTML or generating HTML

As this adds additional CSS, the styling applied:

For example:

sourceData = [{id: 1, temp_F:98}, {id: 2, temp_F:99}, {id: 3, temp_F:100}];

utils.table(sourceData)
   .border('1px solid #aaa')
   .render();
id temp_F
1 98
2 99
3 100
Parameters:
Name Type Description
borderCSS String | Boolean

CSS String to additionally apply HTML TD elements

columns(values) → {TableGenerator}

Applies an optional set of columns / properties to render

Example
dataSet = [{reg:'z', source: 'A', temp: 99},
   {reg: 'z', source: 'B', temp: 98},
   {reg: 'z', source:'A', temp: 100}
];

//-- only show the temp and source columns
new TableGenerator(dataSet)
 .columns('temp', 'source') // or .columns(['temp', 'source'])
 .generateMarkdown();

//-- provides

temp | source
---- | ------
99   | A
98   | B
100  | A
Parameters:
Name Type Description
values Array.<String>

Optional array of exclusive fields to render\n If not provided, then all fields are rendered.\n If provided, then only the fields listed will be rendered\n
Returns:
  • chainable instance
Type
TableGenerator

columnsToExclude(values) → {TableGenerator}

Applies an optional set of columns / properties not to render

Example
dataSet = [{reg:'z', source: 'A', temp: 99},
   {reg: 'z', source: 'B', temp: 98},
   {reg: 'z', source:'A', temp: 100}
];

//-- only show the temp and source columns
new TableGenerator(dataSet)
 .columnsToExclude('reg') // or .columnsToExclude(['reg'])
 .generateMarkdown();

//-- provides

temp | source
---- | ------
99   | A
98   | B
100  | A
Parameters:
Name Type Description
values Array.<String>

Optional array of columns not to render\n If not provided, then all fields are rendered.\n If provided, then these fields will not be rendered under any circumstance.\n
Returns:
  • chainable instance
Type
TableGenerator

data(collection) → {TableGenerator}

See:

Assigns the data to be used in generating the table.

Example
dataSet = [{temp: 37, type: 'C'}, {temp: 310, type: 'K'}, {temp: 98, type: 'F'}];

//-- simple example where the temp property is converted, and type property overwritten
new TableGenerator()
 .data(dataSet)
 .generateMarkdown()

//-- gives
temp | type
---- | ----
37   | C   
310  | K   
98   | F
Parameters:
Name Type Description
collection Array
Returns:
  • chainable instance
Type
TableGenerator

filter(filterFn) → {TableGenerator}

Filter the dataset

(This is a alternative to calling .filter() on the source data)

For example:

data = [{temp: 98, type: 'F'}, {temp: 37, type: 'C'}, {temp: 309, type: 'K'}];

//-- simple example where the temp property is converted, and type property overwritten
new TableGenerator(data)
 .filter((row) => row.type === 'C')
 .generateMarkdown()

//-- gives
temp | type
---- | ----
37   | C
Parameters:
Name Type Description
filterFn function

A function that returns true to include the row in output

Properties
Name Type Description
row Object

a record from within data
Returns:
Type
TableGenerator

format(obj) → {TableGenerator}

Object that provides translations functions for matching properties.

(This is an alternate to formatterFn or simple .map() call on the source data)

NOTE: Only matching properties on the formatter object are changed - all others are left alone.

For example:

data = [
  {station: 'A', temp: 98, type: 'F', descr: '0123'},
  {station: 'A', temp: 99, type: 'F', descr: '0123456'},
  {station: 'A', temp: 100, type: 'F', descr: '0123456789'}
];

//-- simple example where the temp property is converted, and type property overwritten
new TableGenerator(data)
 .format({
   //-- property 'station' not mentioned, so no change
   
   //-- convert temperature to celsius
   temp: (value) => (value - 32) * 0.5556,
   //-- overwrite type from 'F' to 'C'
   type: 'C',
   //-- ellipsify to shorten the description string, if longer than 8 characters
   descr: (str) => utils.format.ellipsify(str, 8)
 }).renderMarkdown()
station temp type descr
A 36.67 F 0123
A 37.225 F 0123456
A 37.781 F 01234567…

Note, due to frequent requests, simple datatype conversions can be requested.

Only ('String', 'Number', and 'Boolean') are supported

data = [
  { propA: ' 8009', propB: 8009, isBoolean: 0},
  { propA: ' 92032', propB: 92032, isBoolean: 1},
  { propA: ' 234234', propB: 234234, isBoolean: 1},
];

utils.table(data)
  .format({
    //-- convert Prop A to Number - so render with Locale Number Formatting
    propA: 'number',
    //-- conver PropB to String - so render without Locale Number Formatting
    propB: 'string',
    //-- render 'True' or 'False'
    isBoolean: 'boolean'
  }).renderMarkdown();
propA propB isBoolean
8,009 8009 false
92,032 92032 true
234,234 234234 true
Parameters:
Name Type Description
obj Object

object with properties storing arrow functions

Properties
Name Type Description
PropertyToTranslate function

(value) => result
Returns:
Type
TableGenerator

formatterFn(fn) → {TableGenerator}

See:

Function that can format a value for a given row, cell

(value, cellIndex, header, rowIndex, row, record) => string

Parameters:
Name Type Description
fn function

Translation function to apply to all cells.

When it runs, you will recieve a single parameter representing the current cell and row.

Return what the new value should be.

Properties
Name Type Description
value any

destructured value of the cell
columnIndex Number

destructured 0 index column of the cell
property String

destructured property used for that column
rowIndex Number

destructured 0 index row of the cell
record Array

destructured original record
Returns:
Type
TableGenerator

fromArray(collection) → {TableGenerator}

See:
  • {TableGenerator.data}
  • {TableGenerator.fromList}

Assigns the data by importing a 2 dimensional array.

If headers are not provided, then the first row of the collection is assumed.

If there is no header provided (by default) - then the first row is assumed.

dataSet = [ [ 'temp', 'type' ], [ 37, 'C' ], [ 310, 'K' ], [ 98, 'F' ] ];

new TableGenerator()
 .fromArray(dataSet)
 .generateMarkdown();
temp type
37 C
310 K
98 F

However, if there is a header provided, it assumes there is none in teh first row.

headers = [ 'temp', 'type' ];
dataSet = [[ 37, 'C' ], [ 310, 'K' ], [ 98, 'F' ] ];

new TableGenerator()
 .fromArray(dataSet)
 .generateMarkdown();
temp type
37 C
310 K
98 F
Parameters:
Name Type Description
collection Array.<Array>
Returns:
Type
TableGenerator

fromDataFrameObject(dataFrameObject) → {TableGenerator}

See:

Initializes the data in the tableGenerator with an object holding 1d tensor properties.

dfObject = {
  id: [
    1, 0, 2, 3, 4,
    5, 6, 8, 7
  ],
  city: [
    'Seattle',  'Seattle',
    'Seattle',  'New York',
    'New York', 'New York',
    'Chicago',  'Chicago',
    'Chicago'
  ],
  month: [
    'Aug', 'Apr',
    'Dec', 'Apr',
    'Aug', 'Dec',
    'Apr', 'Dec',
    'Aug'
  ],
  precip: [
    0.87, 2.68, 5.31,
    3.94, 4.13, 3.58,
    3.62, 2.56, 3.98
  ]
}

utils.table().fromDataFrameObject(dfObject).render()
id city month precip
1 Seattle Aug 0.87
0 Seattle Apr 2.68
2 Seattle Dec 5.31
3 New York Apr 3.94
4 New York Aug 4.13
5 New York Dec 3.58
6 Chicago Apr 3.62
8 Chicago Dec 2.56
7 Chicago Aug 3.98
Parameters:
Name Type Description
dataFrameObject Object

DataFrame with 1d tensor properties
Returns:
Type
TableGenerator

fromList(array1d) → {TableGenerator}

See:
  • {TableGenerator.fromArray}

Assigns the data from a single 1 dimensional array.

Is syntatic sugar to simply wrap the 1 dimensional array into a 2 dimensional array.

let precip = [
  1, 0, 2, 3, 4
];

utils.table().fromList(precip).render()

_

1 0 2 3 4

Parameters:
Name Type Description
array1d Array
Returns:
Type
TableGenerator

fromObjectCollection(collection) → {TableGenerator}

Assigns the data by importing in a collections of objects.

Note: this is the default functionality / syntatic sugar - as data is expected as a collection of objects.

Example
dataSet = [{temp: 37, type: 'C'}, {temp: 310, type: 'K'}, {temp: 98, type: 'F'}];

//-- simple example where the temp property is converted, and type property overwritten
new TableGenerator()
 .data(dataSet)
 .generateMarkdown()

//-- gives
temp | type
---- | ----
37   | C   
310  | K   
98   | F
Parameters:
Name Type Description
collection Array.<Object>
Returns:
Type
TableGenerator

generateArray() → {TableArray}

See:

Generates an a result set to allow for further processing

Example
dataSet = [{reg:'z', source: 'A', temp: 99},
   {reg: 'z', source: 'B', temp: 98},
   {reg: 'z', source:'A', temp: 100}
];

//-- only show the temp and source columns
new TableGenerator(dataSet)
 .columnsToExclude('reg') // or .columnsToExclude(['reg'])
 .generateArray();

//--

{
  headers: ['source', 'temp'],
  data: [
    ['A', 99],
    ['B', 98],
    ['A', 100],
  ]
}
Returns:
Type
TableArray

generateArray2() → {Array.<Array.<any>>}

See:

Generates an array of objects in a 2d Array

NOTE: this can be helpful for needing to transpose results

Example
dataSet = [{reg:'z', source: 'A', temp: 99},
   {reg: 'z', source: 'B', temp: 98},
   {reg: 'z', source:'A', temp: 100}
];

//-- only show the temp and source columns
new TableGenerator(dataSet)
 .columnsToExclude('reg') // or .columnsToExclude(['reg'])
 .generateArray2();

//--
[
 ['source', 'temp'],
 ['A', 99],
 ['B', 98],
 ['A', 100],
];
Returns:
  • 2d array with both headers and data included
Type
Array.<Array.<any>>

generateCSV()

See:

Generates a CSV Table

generateHTML() → {string}

See:

Generates an html table

Returns:
Type
string

generateMarkdown() → {string}

See:

Generates a markdown table

Returns:
Type
string

generateTSV()

See:

Generates a TSV Table

height(maxHeightCSS) → {TableGenerator}

Set the css max-height of the table when calling render. (Not used in generating html)

Defaults to '50vh' unless updated here.

Parameters:
Name Type Description
maxHeightCSS String

css to apply when rendering the table in html
Returns:
Type
TableGenerator

labels(labelsObj) → {TableGenerator}

Sets the alternative labels to be used for specific fields.

single object with properties that should show a different label\n

Example
dataSet = [{source: 'A', temp: 99},
   {source: 'B', temp: 98},
   {source:'A', temp: 100}
];

//-- only show the temp and source columns
new TableGenerator(dataSet)
 .lables({ temp: 'temperature})
 .generateMarkdown();

//--

source | temperature
------ | -----------
A      | 99
B      | 98
C      | 100
Parameters:
Name Type Description
labelsObj Object
Returns:
  • chainable instance
Type
TableGenerator

limit(limitRecords) → {TableGenerator}

The number of rows to limit.

10 : means ascending 10 records.

-10 : means descending 10 records

Parameters:
Name Type Description
limitRecords Number

0 for all records, + for ascending, - for descending
Returns:
  • chainable interface
Type
TableGenerator

offset(offsetRecords) → {TableGenerator}

The number of rows to skip before showing any records.

10 : means start showing results only after the first 10 records

-10 : means only show the last 10

Parameters:
Name Type Description
offsetRecords Number

the number of rows to skip
Returns:
  • chainable interface
Type
TableGenerator

printOptions(value, options) → {TableGenerator}

See:

Options to give to printOptions

Example
dataSet = [
   {id: 1, dateTime:new Date(2022,3,2,9), child: { results: true }},
   {id: 1, dateTime:new Date(2022,3,3,9), child: { results: false }},
   {id: 1, dateTime:new Date(2022,3,4,9), child: { results: true }}
];

console.log(utils.table(dataSet)
    .generateMarkdown({align: true})
)

//--

id|dateTime            |child            
--|--                  |--               
1 |4/2/2022, 9:00:00 AM|{"results":true} 
1 |4/3/2022, 9:00:00 AM|{"results":false}
1 |4/4/2022, 9:00:00 AM|{"results":true} 

dataSet = [
   {id: 1, dateTime:new Date(2022,3,2,9), child: { results: true }},
   {id: 1, dateTime:new Date(2022,3,3,9), child: { results: false }},
   {id: 1, dateTime:new Date(2022,3,4,9), child: { results: true }}
];

console.log(utils.table(dataSet)
    .printOptions({ collapseObjects: true, dateFormat: 'toISOString'})
    .generateMarkdown({align: true})
)

id|dateTime            |child          
--|--                  |--             
1 |2022-04-02T14:00:00.000Z|[object Object]
1 |2022-04-03T14:00:00.000Z|[object Object]
1 |2022-04-04T14:00:00.000Z|[object Object]
Parameters:
Name Type Description
value any

the value to print
options Object

collection of options

Properties
Name Type Description
collapseObjects Boolean

if true, typesof Object values are not expanded
dateFormat String

('LOCAL'|'LOCAL_DATE','LOCAL_TIME','GMT','ISO','UTC','NONE')
Returns:
  • chainable instance
Type
TableGenerator

render()

See:

Renders the html table in the cell results.

weather = [
  { id: 1, city: 'Seattle',  month: 'Aug', precip: 0.87 },
  { id: 0, city: 'Seattle',  month: 'Apr', precip: 2.68 },
  { id: 2, city: 'Seattle',  month: 'Dec', precip: 5.31 },
  { id: 3, city: 'New York', month: 'Apr', precip: 3.94 },
  { id: 4, city: 'New York', month: 'Aug', precip: 4.13 },
  { id: 5, city: 'New York', month: 'Dec', precip: 3.58 },
  { id: 6, city: 'Chicago',  month: 'Apr', precip: 3.62 },
  { id: 8, city: 'Chicago',  month: 'Dec', precip: 2.56 },
  { id: 7, city: 'Chicago',  month: 'Aug', precip: 3.98 }
];
utils.table(weather)
    .render();

Screenshot of Table

renderCSV()

See:

Renders Markdown in the cell results

Example
weather = [
  { id: 1, city: 'Seattle',  month: 'Aug', precip: 0.87 },
  { id: 0, city: 'Seattle',  month: 'Apr', precip: 2.68 },
  { id: 2, city: 'Seattle',  month: 'Dec', precip: 5.31 },
  { id: 3, city: 'New York', month: 'Apr', precip: 3.94 },
  { id: 4, city: 'New York', month: 'Aug', precip: 4.13 },
  { id: 5, city: 'New York', month: 'Dec', precip: 3.58 },
  { id: 6, city: 'Chicago',  month: 'Apr', precip: 3.62 },
  { id: 8, city: 'Chicago',  month: 'Dec', precip: 2.56 },
  { id: 7, city: 'Chicago',  month: 'Aug', precip: 3.98 }
];
utils.table(weather)
    .renderCSV();

// "id","city","month","precip"
// "1","Seattle","Aug","0.87"
// "0","Seattle","Apr","2.68"
// "2","Seattle","Dec","5.31"
// "3","New York","Apr","3.94"
// "4","New York","Aug","4.13"
// "5","New York","Dec","3.58"
// "6","Chicago","Apr","3.62"
// "8","Chicago","Dec","2.56"
// "7","Chicago","Aug","3.98"

renderMarkdown()

See:

Renders Markdown in the cell results.

Used quite frequently in making the documentation used here.

Example
weather = [
  { id: 1, city: 'Seattle',  month: 'Aug', precip: 0.87 },
  { id: 0, city: 'Seattle',  month: 'Apr', precip: 2.68 },
  { id: 2, city: 'Seattle',  month: 'Dec', precip: 5.31 },
  { id: 3, city: 'New York', month: 'Apr', precip: 3.94 },
  { id: 4, city: 'New York', month: 'Aug', precip: 4.13 },
  { id: 5, city: 'New York', month: 'Dec', precip: 3.58 },
  { id: 6, city: 'Chicago',  month: 'Apr', precip: 3.62 },
  { id: 8, city: 'Chicago',  month: 'Dec', precip: 2.56 },
  { id: 7, city: 'Chicago',  month: 'Aug', precip: 3.98 }
];
utils.table(weather)
    .renderMarkdown();

// id|city    |month|precip
// --|--      |--   |--    
// 1 |Seattle |Aug  |0.87  
// 0 |Seattle |Apr  |2.68  
// 2 |Seattle |Dec  |5.31  
// 3 |New York|Apr  |3.94  
// 4 |New York|Aug  |4.13  
// 5 |New York|Dec  |3.58  
// 6 |Chicago |Apr  |3.62  
// 8 |Chicago |Dec  |2.56  
// 7 |Chicago |Aug  |3.98

renderTSV()

See:

Renders Markdown in the cell results

Example
weather = [
  { id: 1, city: 'Seattle',  month: 'Aug', precip: 0.87 },
  { id: 0, city: 'Seattle',  month: 'Apr', precip: 2.68 },
  { id: 2, city: 'Seattle',  month: 'Dec', precip: 5.31 },
  { id: 3, city: 'New York', month: 'Apr', precip: 3.94 },
  { id: 4, city: 'New York', month: 'Aug', precip: 4.13 },
  { id: 5, city: 'New York', month: 'Dec', precip: 3.58 },
  { id: 6, city: 'Chicago',  month: 'Apr', precip: 3.62 },
  { id: 8, city: 'Chicago',  month: 'Dec', precip: 2.56 },
  { id: 7, city: 'Chicago',  month: 'Aug', precip: 3.98 }
];
utils.table(weather)
    .renderTSV();

// "id","city","month","precip"
// "1","Seattle","Aug","0.87"
// "0","Seattle","Apr","2.68"
// "2","Seattle","Dec","5.31"
// "3","New York","Apr","3.94"
// "4","New York","Aug","4.13"
// "5","New York","Dec","3.58"
// "6","Chicago","Apr","3.62"
// "8","Chicago","Dec","2.56"
// "7","Chicago","Aug","3.98"

reset()

Resets the generator

sort()

See:

Convenience function that creates a sort based on properties.

Sorting always occurs left to right - sort('First', 'Second', etc.)

NOTE: prefixing a field with - will sort it descending.

Example
```
sampleData = [{val: 3}, {val:1}, {val:2}];
new TableGenerator(sampleData)
 //-- sort ascending by the val property
 .sort('val')
 .render();
```

sortFn(fn) → {TableGenerator}

See:

Applies a standard array sort function to the data.

Parameters:
Name Type Description
fn function

optional sort function
Returns:
  • chainable instance
Type
TableGenerator

styleCell(formatterFn) → {TableGenerator}

Function that can apply a style to a given cell

(value, columnIndex, rowIndex, row, record) => string

Note: see TableGenerator#styleColumn for another way to do style a cell.

dataSet = [
 { title:'row 0', a: 0.608, b: 0.351, c: 0.823, d: 0.206, e: 0.539 },
 { title:'row 1', a: 0.599, b: 0.182, c: 0.197, d: 0.352, e: 0.338 },
 { title:'row 2', a: 0.275, b: 0.715, c: 0.304, d: 0.482, e: 0.248 },
 { title:'row 3', a: 0.974, b: 0.287, c: 0.323, d: 0.875, e: 0.017 },
 { title:'row 4', a: 0.491, b: 0.479, c: 0.428, d: 0.252, e: 0.288 }
];

// color range from Green to Red
colorRange = new utils.svg.svgJS.Color('#0A0').to('#F00');

//-- only show the temp and source columns
utils.table(dataSet)
  .styleCell(({value, columnIndex, rowIndex, row, record}) => {
    //-- style the color of the cell from Red:0 to Green:1
    // record is the exact record provided to data / the generator
    // row is the array provided to the renderer (which may be re-arranged)
    //   with rowIndex and Column index also relative to the final array
    if (columnIndex >= 1) {
      return `color: ${colorRange.at(value).toHex()}`;
    }
  })
  .render();

Screenshot of styling the cell

When it runs, you will receive a single parameter representing the current cell and row.

Return what the new value should be.

Parameters:
Name Type Description
formatterFn function

Translation function to apply to all cells.

Properties
Name Type Description
value any

destructured value of the cell
columnIndex Number

destructured 0 index column of the cell
columnHeader Number

destructured header of the column
rowIndex Number

destructured 0 index row of the cell
row Array

destructured full row provided
record Array

destructured original record
Returns:
Type
TableGenerator

styleColumn(styleObj) → {TableGenerator}

Function that can apply a style to a given column

(rowIndex, ({ columnHeader, columnIndex, record, row, rowIndex, value })) => string

note: see TableGenerator#styleCell for another way to do style a cell.

dataSet = [
  {reg: 'z', source: 'A', temp: 10},
  {reg: 'z', source: 'B', temp: 98},
  {reg: 'z', source: 'A', temp: 100}
];

utils.table(dataSet)
  .styleColumn({
    //-- we want to make the background color of the color red, if the temp > 50
    temp: (temp) => temp > 50 ? 'background-color:pink' : '',

    //-- we want to make the source bold if the source is B
    source: (source) => source === 'B' ? 'font-weight:bold' : ''
  })
  .render();
regsourcetemp
zA10
zB98
zA100

Or you could style the cell based on information in other columns.

dataSet = [
  {reg: 'z', source: 'A', tempFormat: 'c', temp: 42},
  {reg: 'z', source: 'B', tempFormat: 'f', temp: 98},
  {reg: 'z', source: 'A', tempFormat: 'f', temp: 100}
];

utils.table(dataSet)
  .styleColumn({
    //-- we want to make the background color of the color red, if the temp > 50
    temp: (temp, { record }) => convertToKelvin(temp, record.tempFormat) > 283
      ? 'background-color:pink'
      : ''
  })
  .render();
regsourcetempFormattemp
zAc10
zBf98
zAf100
Parameters:
Name Type Description
styleObj object

object with properties matching the column header label

Properties
Name Type Description
property function

Function to evaluate for each row returning the inline css styles to apply.

When it runs it will get passed the value and context, and should return the css inline styles to apply

Properties
Name Type Description
value any

the value for a given row for that column
context.value any

destructured value of the cell
context.columnIndex Number

destructured 0 index column of the cell
context.rowIndex Number

destructured 0 index row of the cell
context.row Array

destructured full row provided
context.record Array

destructured original record
Returns:
  • chainable instance
Type
TableGenerator

styleHeader(value) → {TableGenerator}

Override the styles for the the header row

Note: this is only used on render / generateHTML currently

dataSet = [{reg:'z', source: 'A', temp: 99},
    {reg: 'z', source: 'B', temp: 98},
    {reg: 'z', source:'A', temp: 100}
 ];
 
//-- only show the temp and source columns
utils.table(dataSet)
  .columns('temp', 'source') // or .columns(['temp', 'source'])
  .styleHeader('border: 1px solid #000;')
  .render();

Screenshot of styling the table with a border on the header

Parameters:
Name Type Description
value String

style to apply to the table ex: font-weight: bold
Returns:
  • chainable instance
Type
TableGenerator

styleRow(styleFn) → {TableGenerator}

Function that can apply a style to a given row

(rowIndex, row, record) => string

dataSet = [{reg:'z', source: 'A', temp: 10},
  {reg: 'z', source: 'B', temp: 98},
  {reg: 'z', source:'A', temp: 100}
];

//-- only show the temp and source columns
utils.table(dataSet)
  .columns('temp', 'source') // or .columns(['temp', 'source'])
  .styleRow(({rowIndex, row, record}) => {
    return (record.source === 'A') ? `color: #0A0;` : `color: #A00`;
  })
  .render();

Screenshot of styling a row

Parameters:
Name Type Description
styleFn function

Translation function to apply to all cells.

When it runs, you will receive a single parameter representing the current cell and row.

Return what the new value should be.

Properties
Name Type Description
rowIndex Number

destructured 0 index row of the cell
row Array

destructured full row provided
record Array

destructured original record
Returns:
  • chainable instance
Type
TableGenerator

styleTable(value) → {TableGenerator}

Defines the style to render on the table

Note: this is only used on render / generateHTML currently

dataSet = [{reg:'z', source: 'A', temp: 99},
    {reg: 'z', source: 'B', temp: 98},
    {reg: 'z', source:'A', temp: 100}
 ];
 
//-- only show the temp and source columns
utils.table(dataSet)
  .columns('temp', 'source') // or .columns(['temp', 'source'])
  .styleTable('border:1px solid #000')
  .render();

Screenshot of styling the table with a border on the outside

Parameters:
Name Type Description
value String

style to apply to the table ex: border: 1px solid black
Returns:
  • chainable instance
Type
TableGenerator

transpose() → {TableGenerator}

Transposes (flips along the diagonal) prior to output.

This can be very handy for wide, but short, tables.

For example, given the data:

const data = [
  { name: 'John', color: 'green', age: 23, hair: 'blond', state: 'IL' },
  { name: 'Jane', color: 'brown', age: 23, hair: 'blonde', state: 'IL' }
];

Running normally would give

utils.table(data)
   .generateMarkdown();
name color age hair state
John green 23 blond IL
Jane brown 23 blonde IL

Running that transposed flips it.

utils.table(data)
 .transpose()
 .generateMarkdown();
name John Jane
color green brown
age 23 23
hair blond blonde
state IL IL
Returns:
Type
TableGenerator