HTML:
<div class="weui-cells weui-cells_form" style="margin-top: 0;"> <div class="weui-cell"> <div class="weui-cell__bd"> <textarea id="doctorIntroduction" class="weui-textarea" placeholder="写答案" rows="3"></textarea> <div class="weui-textarea-counter"><span class="textareaLength">0</span>/200</div> </div> </div> </div>
JS:
//限制输入字数 function LimitedWordsNum() { $('#doctorIntroduction').keydown(function() { var curLength = $('#doctorIntroduction').val().length; if(curLength >= 200) { var num = $('#doctorIntroduction').val().substr(0, 200); $('#doctorIntroduction').val(num); weui.alert('超字数限制,多出的字符将被截断!'); } else { $('.textareaLength').text(curLength); } }) }