JavaScript: 限制textarea的输入字数

html&javascript

<textarea class="form-control" id="feedbackContent" name="feedbackCon" rows="10"
                      onkeyup="textCounter(feedbackCon,500)"
                      onkeydown="textCounter(feedbackCon,500)"
                    ></textarea>

<script type="text/javascript">
  function textCounter(field,maxlimit){
    if (field.value.length > maxlimit) {
      field.value = field.value.substring(0, maxlimit);
    }
  }
</script>

 

 

参考：

http://www.jb51.net/article/38578.htm