The JavaScript exception "repeat count must be non-negative" occurs when the String.prototype.repeat() method is used with a count argument that is a negative number.
RangeError: Invalid count value: -1 (V8-based) RangeError: repeat count must be non-negative (Firefox) RangeError: String.prototype.repeat argument must be greater than or equal to 0 and not be Infinity (Safari)Error type What went wrong?
The String.prototype.repeat() method has been used. It has a count parameter indicating the number of times to repeat the string. It must be between 0 and less than positive Infinity and cannot be a negative number. The range of allowed values can be described like this: [0, +â).
"abc".repeat(-1); // RangeError
"abc".repeat(0); // ''
"abc".repeat(1); // 'abc'
"abc".repeat(2); // 'abcabc'
"abc".repeat(3.5); // 'abcabcabc' (count will be converted to integer)
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