The _.castArray() method is used to cast value into an array if it is not an array.
Syntax:
_.castArray( value )
Parameters: This method accepts single parameter as mentioned above and described below:
- value: This parameter holds the value that need to be inspect.
Return Value: It returns an array with the including value passed in the _.castArray().
Example 1: This example using integer value as a parameter.
Javascript
const _ = require('lodash'); let x = 10; let arr = _.castArray(x); console.log("\n\nThe value returned to by _castArray(x) is", arr); |
Here, const _ = require(‘lodash’) is used to import the lodash library into the file.
Output:
Example 2: This example using String, null, and undefined as a parameter.
Javascript
const _ = require('lodash'); let x = _.castArray('abc'); console.log('\n With String ', x ); let y = _.castArray(null); console.log('\n With null ', y ); let z = _.castArray(undefined); console.log('\n With undefined ', z); |
Output:
Example 3: With no parameter, object, and function.
Javascript
const _ = require('lodash'); let x = _.castArray(); console.log("\n With no parameter ", x); let y = _.castArray({"name":"lodash", "work":"I'm make js more" }); console.log("\n With object ", y); let z = _.castArray(function hello() { console.log("hello"); }); console.log("\n with function ", z); |
Output:
Example 4: This example using multiple parameters, it will take only the first parameter and with an array, it will just return the same array.
Javascript
const _ = require('lodash'); let x = _.castArray(1, 2, "hello"); console.log('\n With multiple parameter ', x); let y = _.castArray([1, 2, 3]); console.log('\n With array ', y); |
Output:
Note: This will not work in normal JavaScript because it requires the library lodash to be installed.
Reference: https://lodash.com/docs/4.17.15#castArray
