JavaScript RangeError – Repeat count must be non-negative

This JavaScript exception repeat count must be non-negative occurs if the argument passed to String.prototype.repeat() method is a negative number.

Message:

RangeError: argument out of range
RangeError: repeat count must be non-negative (Firefox)
RangeError: Invalid count value (Chrome)

Error Type:

RangeError

Cause of Error: The repeat() method has a parameter that indicates the number of times to repeat the string. It should be in the range 0 to Infinity and cannot be a negative number.

Example 1: In this example, the parameter’s value passed is a negative value, So the error has occurred.

Javascript

'GFG'.repeat(-1); // error here

Output(in console):

RangeError: Invalid count value

Example 2: In this example, the parameter’s value passed is a negative value, So the error has occurred.

Javascript

let gfg = "This is GeeksforGeeks";
gfg.repeat(-100); // error here

Output(in console):

RangeError: Invalid count value