Underscore.JS - isError method

Syntax

_.isError(object)

isError method checks if object is an error or inherits from error or not. See the below example −

Example

var _ = require('underscore');

//Example 1: Check if argument passed is an error
try{
   throw new error("Test");
}catch(err){
   console.log(_.isError(err));
}

//Example 2: Check if argument passed is an error
console.log(_.isError('Test'));

Save the above program in tester.js. Run the following command to execute this program.

Command

\>node tester.js

Output

true
false