JSFiddle - React, Tailwind, and code Playground

HTML

<textarea maxlength="10"></textarea>

JavaScript

$('textarea[maxlength]').on('keydown keyup blur', function(e) {
    var $this = $(this),
        maxlen = $this.attr('maxlength'),
        val = $this.val();
    
    if (val.length > maxlen) {
        $this.val(val.substr(0, maxlen));
    }
});