Node.js | console.error() Function

The console.error() function from console class of Node.js is used to display an errror messages on the console. It prints to stderr with newline.

Syntax:

console.error([data][, ...args])

Parameter: This function can contains 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.

Below programs demonstrates the working of console.error() function:

Program 1:

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// Store number to variable
num = 20
  
// Check condition
if (num < 100) {
    console.log("Enter number greater then 100");
}
else {
    console.error("correct choice");
}        

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Output:

Enter number greater then 100

Program 2:

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// Store number to variable
x = 20;
y = 50;
  
// Check condition
if (x > y) {
    console.error('%d is greater then %d', x, y);
}
else {
    console.error('%d is less then or equal to %d', x, y);
}

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Output:

20 is less then or equal to 50


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