Node.js console.error() Function
Last Updated :
03 May, 2023
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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:
// 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:
// 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
