How to return an array of lines from a file in node.js ?

How to display output data in tabular form in Node.js ?

Last Updated : 01 Jul, 2020

Tables are a combination of rows and columns. Node.js has its own module named as a table that helps in making tables with a wide variety of styles that can be applied to the table such as border styles, colors body style, etc. Installation of module:

npm install table

Syntax:

table(data, config)

Parameters:

data: Data is an Array of array i.e. data to be saved in the table.
config: Different predefined configuration.

Return Value: A string is returned by the function. Example 1: Filename: script.js

javascript

let table = require("table");
let data, config;

// Data to be saved in the tables
data = [
  ["A", "B", "C"],          
  ["D", "E", "F"],
  ["G", "H", "I"],
]

config = {

  // Predefined styles of table
  border: table.getBorderCharacters("ramac"),
}

let x = table.table(data, config);
console.log(x)

Step to run this program: Run script.js using the following command:

node script.js

Output:

Example 2: Filename: script.js

javascript

let table = require("table");
let data, config;

data = [
  ["A", "B", "C"],
  ["D", "E", "F"],
  ["G", "H", "I"],
]

// Creating column width configuration
config = { 
  columns: {
    0: {
      width: 1   // Column 0 of width 1
    },
    1: {
      width: 20  // Column 1 of width 20
    },
    2: {
      width: 5   // Column 2 of width 5
    }
  }
};
let x = table.table(data, config);
console.log(x)

Step to run this program: Run script.js using the following command:

node script.js

Output:

How to return an array of lines from a file in node.js ?

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