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Lodash _.isInstanceOf() Method

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The Lodash _.isInstanceOf() method checks whether the given value is the instance of a given constructor or not and returns the corresponding boolean value.

Syntax:

_.isInstanceOf(value, constructor);

Parameters: This method takes two parameter as mentioned above and described below:

  • value: Given value to be checked for instance.
  • constructor: Given a constructor.

Return Value: This method returns a Boolean value true if the given value is instance, else false.

Note: This will not work in normal JavaScript because it requires the lodash.js contrib library to be installed. Lodash.js contrib library can be installed using npm install lodash-contrib.

Example 1:

Javascript




// Defining lodash contrib variable 
var _ = require('lodash-contrib'); 
  
// Checking for _.isInstanceOf() method
console.log("The Value is Instance Of constructor : " 
    + _.isInstanceOf(new Date(),Date));


Output:

The Value is Instance Of constructor : true

Example 2:

Javascript




// Defining lodash contrib variable 
var _ = require('lodash-contrib'); 
  
// Checking for _.isInstanceOf() method
console.log("The Value is Instance Of constructor : " 
    + _.isInstanceOf("abc", Date));


Output:

The Value is Instance Of constructor : false

Last Updated : 30 Sep, 2020
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