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Node.js console.error() Function

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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

Last Updated : 03 May, 2023
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