Regular expression to limit number of characters to 10

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You can use curly braces to control the number of occurrences. For example, this means 0 to 10:

/^[a-z]{0,10}$/

The options are:

  • {3} Exactly 3 occurrences;
  • {6,} At least 6 occurrences;
  • {,4} At most 4 occurrences;
  • {2,5} 2 to 5 occurrences.

See the regular expression reference.

Your expression had a + after the closing curly brace, hence the error.

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