Module for returning arrays with a specific length by padding values.
var pad = require('array-pad');
var arr = pad([], 3, null); // => [null, null, null]
arr = pad(arr, 5, 0); // => [null, null, null, 0, 0];To install array-pad in a Node application use npm.
$ npm install array-pad
No tests available for the browser but you may try using it via webpack.
$ webpack index.js array-pad.js
To run tests use npm.
$ npm install
$ npm test
Padding an array is simple as passing the desired length and an optional value to pad with. If no value is given, padded items will be set to undefined by default.
var array = pad([], 2); // => [undefined, undefined]
pad(array, 4, null); // => [undefined, undefined, null, null]
pad(array, 1, false); // => [undefined, undefined, null, null]Pad, by default, pads values to the right side of the array via the .push() method. To pad left, perform .unshift(), pass then length as a negative integer.
pad([1,2,3], -5, 0); // => [0, 0, 1, 2, 3]Pad will always create a new instance of the array passed in. If augmentation to the original instance is required, pass the first parameter as true.
var arr = [];
var res = pad(true, arr, 3);
res === arr; // => trueCopyright (c) 2015 Christopher Turner