Why this package?

If you want to make an interval insertion into an existing array, you may need this simple package to make things easy.

Installation:

NPM

npm i array-interval-insert

Basic usage:

let intervalInsert = require('array-interval-insert')

let students = [{name: 'Alex'}, {name: 'Bob'}, {name:'Alfredo'}] 
let yy = intervalInsert(students, '11')
console.log(yy)

// result:  
// (5) [{…}, "11", {…}, "11", {…}]

Syntax

intervalInsert(array, insertion, beforeStart=false, afterLast=false)

• array: any[]
  An array to copy and make insertion.

• insertion: string | number | {}
  String, number or object you want to insert into the first argument.

• beforeStart:boolean
  If truthy, insertion will be also added as the first item of target array.
  Default to false.

• afterLast:boolean
  If truthy, insertion will be also added as the last item of target array.
  Default to false.

Examples:

let intervalInsert = require('array-interval-insert')
yy = intervalInsert(students, '11', 1)
console.log(yy)

// result:  
// (6) ["11", {…}, "11", {…}, "11", {…}]


zz = intervalInsert(students, '11', 1, 1)
console.log(zz)

//result: 
// (7) ["11", {…}, "11", {…}, "11", {…}, "11"]