Node.js console.error() Function Last Updated : 03 May, 2023 Comments Improve Suggest changes Like Article Like Report The console.error() function from the console class of Node.js is used to display an error message on the console. It prints to stderr with a newline. Syntax: console.error([data][, ...args]) Parameter: This function can contain multiple parameters. The first parameter is used for the primary message and other parameters are used for substitution values. Return Value: The function returns an error message. The below programs demonstrate the working of the console.error() function: Program 1: javascript // Store number to variable num = 20 // Check condition if (num < 100) { console.log("Enter number greater than 100"); } else { console.error("correct choice"); } Output: Enter number greater than 100 Program 2: javascript // Store number to variable x = 20; y = 50; // Check condition if (x > y) { console.error('%d is greater than %d', x, y); } else { console.error('%d is less than or equal to %d', x, y); } Output: 20 is less than or equal to 50 Comment More infoAdvertise with us Next Article Node.js console.info() Method T Twinkl Bajaj Follow Improve Article Tags : Web Technologies Node.js NodeJS-function Node.js-console-module Similar Reads Node.js console.assert() Method The console.assert() method is an inbuilt application programming interface of the console module which is used to assert value passed to it as a parameter, i.e. it checks whether the value is true or not, and prints an error message, if provided and failed to assert the value. Syntax: console.asse 2 min read Node.js console.clear() Method The console.clear() method is used to clear the stdout, when stdout is a TTY (Teletype) i.e. terminal it will attempt to clear the TTY. When stdout is not a TTY, this method does nothing. The console.clear() will work differently across different operating systems and terminal types. For Linux opera 1 min read Node.js console.count() Method The console.count() method is an inbuilt application programming interface of the console module which is used to count label passed to it as a parameter, by maintaining an internal counter for that specific label. Syntax: console.count(label) Parameters: This method has one parameter as mentioned a 2 min read Node.js console.countReset() Method The console.countReset() method is an inbuilt application programming interface of the console module which is used to reset the count for the specific label passed to it as a parameter. Syntax: console.countReset( label ); Parameters: This method has one parameter as mentioned above and described b 2 min read Node.js console.debug() Method The console.debug() method is an inbuilt application programming interface of the console module which is used to print messages to stdout in a newline. Similar to the console.log() method. Syntax: console.debug(data, args); Parameters: This method has two parameters as mentioned above and described 2 min read Node.js console.dir() Method The console.dir() method is used to get the list of object properties of a specified object. These object properties also have child objects, from which you can inspect for further information. Syntax: console.dir( object ) Parameters: This method accepts single parameter which holds the object elem 1 min read Node.js console.error() Function The console.error() function from the console class of Node.js is used to display an error message on the console. It prints to stderr with a newline. Syntax: console.error([data][, ...args]) Parameter: This function can contain multiple parameters. The first parameter is used for the primary messa 1 min read Node.js console.info() Method The console.info() method is an inbuilt application programming interface of the console module which is used to print messages to stdout in a newline. It is similar to the console.log() method. Syntax: console.info(data, args); Parameters: This method has two parameters as mentioned above and descr 2 min read Node.js console.timeLog() Method The console.timeLog() method is an inbuilt function in Nodejs that is used to display the time for each execution. This function is proved to be effective when used in a loop. Syntax: console.log([label][, ...data]) Parameters: This function accepts two or more parameters. Return Value: This method 1 min read Node.js console.time() Method The console.time() method is the console class of Node.js. It is used to starts a timer that is used to compute the time taken by a piece of code or function. The method console.timeEnd() is used to stop the timer and output the elapsed time in milliseconds to stdout. The timer can be accurate to th 3 min read Like