Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, strings, objects, numbers, etc.
The _.isSequential() method is used to check whether the given value is a sequential composite type value or not. The examples of a sequential composite type are arrays and arguments.
Syntax:
_.isSequential( value )
Parameters: This method accepts a single parameter as mentioned above and described below:
- value: It is the value to be checked for a sequential type of value.
Return Value: This method returns a Boolean value. It returns true if the given value is a sequential type, otherwise, it returns false.
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.
Example 1: In this example, an array is checked with this method.
Javascript
// Defining the lodash-contrib variable var _ = require('lodash-contrib');   // Using the _.isSequential() method console.log("The Value is Sequential : " +   _.isSequential([2, 4, 6, 8])); |
Output:
The Value is Sequential : true
Example 2: In this example, an object with key-value pairs is checked with this method.
Javascript
// Defining the lodash-contrib variable var _ = require('lodash-contrib');   // Using the _.isSequential() method console.log("The Value is Sequential : " +   _.isSequential( {1:5, 5:10} )); |
Output:
The Value is Sequential : false
Example 3: In this example, a string is checked with this method.
Javascript
// Defining the lodash-contrib variable var _ = require('lodash-contrib');   // Using the _.isSequential() method console.log("The Value is Sequential : " +   _.isSequential("neveropen")); |
Output:
The Value is Sequential : false
