Console.table()

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Displays tabular data as a table.

This function takes one mandatory argument data, which must be an array or an object, and one additional optional parameter columns.

It logs data as a table. Each element in the array (or enumerable property if data is an object) will be a row in the table.

The first column in the table will be labeled (index). If data is an array, then its values will be the array indices. If data is an object, then its values will be the property names. Note that (in Firefox) console.table is limited to displaying 1000 rows (first row is the labeled index).

Note: This feature is available in Web Workers.

Collections of primitive types

The data argument may be an array or an object.

JavaScript
// an array of strings

console.table(["apples", "oranges", "bananas"]);

JavaScript
// an object whose properties are strings

function Person(firstName, lastName) {
  this.firstName = firstName;
  this.lastName = lastName;
}

var me = new Person("John", "Smith");

console.table(me);

Collections of compound types

If the elements in the array, or properties in the object, are themselves arrays or objects, then their elements or properties are enumerated in the row, one per column:

JavaScript
// an array of arrays

var people = [["John", "Smith"], ["Jane", "Doe"], ["Emily", "Jones"]]
console.table(people);

Table displaying array of arrays

JavaScript
// an array of objects

function Person(firstName, lastName) {
  this.firstName = firstName;
  this.lastName = lastName;
}

var john = new Person("John", "Smith");
var jane = new Person("Jane", "Doe");
var emily = new Person("Emily", "Jones");

console.table([john, jane, emily]);

Note that if the array contains objects, then the columns are labeled with the property name.

Table displaying array of objects

JavaScript
// an object whose properties are objects

var family = {};

family.mother = new Person("Jane", "Smith");
family.father = new Person("John", "Smith");
family.daughter = new Person("Emily", "Smith");

console.table(family);

Table displaying object of objects

Restricting the columns displayed

By default, console.table() lists all elements in each row. You can use the optional columns parameter to select a subset of columns to display:

JavaScript
// an array of objects, logging only firstName

function Person(firstName, lastName) {
  this.firstName = firstName;
  this.lastName = lastName;
}

var john = new Person("John", "Smith");
var jane = new Person("Jane", "Doe");
var emily = new Person("Emily", "Jones");

console.table([john, jane, emily], ["firstName"]);

Table displaying array of objects with filtered output

Sorting columns

You can sort the table by a particular column by clicking on that column's label.

Syntax

JavaScript
console.table(data [, columns]);

Parameters

data
The data to display. This must be either an array or an object.
columns
An array containing the names of columns to include in the output.

Specifications

Specification Status Comment
Console API
The definition of 'console.table()' in that specification.
Editor's Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) 34.0 (34.0) No support (Yes) (Yes)
Available in workers (Yes) 38.0 (38.0) ? (Yes) ?
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 34.0 (34.0) ? ? ?
Available in workers ? 38.0 (38.0) ? ? ?

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/console/table

API debugging Debugging DOM Method web console Web Development