Im trying to implement a chartercter limit for a textArea in react js
here is my code.

state = {

  chars_left: 140;

}



handleWordCount = event => {

  const charCount = event.target.value.length;

  const maxChar = this.state.chars_left;

  const charLength = maxChar - charCount;

  this.setState({ chars_left: charLength });

}



<textArea

  rows={6}

  type=text

  maxLength=140

  required

  onChange={this.handleWordCount}

/>

{${this.state.chars_left}}

I have a function that should that show how many character the user is typing and it starts at 140 but it skips tons numbers every time i type something like 130 when i type a single character

what could the problem be?