The Lodash _.interpose() Method takes an array and an element and returns a new array with the given element inserted in between every element of the original array.
Syntax:
_.interpose(array, element)
Parameters: This method takes two parameters as shown above and discussed below:
- array: The array in which element is to be inserted.
- element: The element to be inserted between every other element.
Return Value: This method returns a newly created interposed array.
Note: This will not work in normal JavaScript because it requires the lodash contrib library to be installed.
lodash contrib library can be installed using npm install lodash-contrib –save
Example 1: In this example, we will create a new array using this method.
Javascript
// Defining lodash contrib variable var _ = require('lodash-contrib');Â Â Â // Array var arr = [8,8,8,8,8,8]; Â Â // Element var ele = 0 Â Â // Constructing interposed array var i_arr = _.interpose(arr, ele); Â Â console.log("Array : "); console.log(arr); console.log("Element : "); console.log(ele); console.log("Interposed array : "); console.log(i_arr); |
Output:
Array : [ 8, 8, 8, 8, 8, 8 ] Element : 0 Interposed array : [ 8, 0, 8, 0, 8, 0, 8, 0, 8, 0, 8 ]
Example 2: If there are no between exist, then the original array is returned.
Javascript
// Defining lodash contrib variable var _ = require('lodash-contrib');Â Â Â // Array var arr = [8]; Â Â // Element var ele = 0 Â Â // Constructing interposed array var i_arr = _.interpose(arr, ele); Â Â console.log("Array : "); console.log(arr); console.log("Element : "); console.log(ele); console.log("Interposed array : "); console.log(i_arr); |
Output: Here, the chunk array is compensated due to the shortage of elements.
Array : [ 8 ] Element : 0 Interposed array : [ 8 ]
Example 3: For empty array, the same empty array is returned.
Javascript
// Defining lodash contrib variable var _ = require('lodash-contrib');Â Â Â Â // Array var arr = []; Â Â // Element var ele = 0 Â Â // Constructing interposed array var i_arr = _.interpose(arr, ele); Â Â console.log("Array : "); console.log(arr); console.log("Element : "); console.log(ele); console.log("Interposed array : "); console.log(i_arr); |
Output: Here, the chunk array is compensated due to the shortage of elements.
Array : [ 0 ] Element : 0 Interposed array : [ 0 ]
