html 如何在javascript中限制鼠标粘贴事件中的字符

Posted 2021-05-11

<textarea id="Description"></textarea>

<script>
  $(document).ready(function() {
        $('#Description').bind('keyup change input', function() {   
            var characterLimit = 10;
            var charactersUsed = $(this).val().length;
            if (charactersUsed > characterLimit) {
                charactersUsed = characterLimit;
                $(this).val($(this).val().substr(0, characterLimit));
                $(this).scrollTop($(this)[0].scrollHeight);
            }
        });
    });
</script>