LayUI textarea 控制字数并提示_layui textarea 限制字数

<style>
 /*限制字数0/800的位置*/
    .layui-input-block {
        position: relative;
    }

    .word {
        position: absolute;
        right: 18px;
        bottom: 5px;
        color: #aaa;
        font-size: 12px;
    }
</style>

<div class="layui-fluid">
    <div class="layui-card">
        <div class="layui-card-body" style="padding: 15px;">
            <form id="roleEditForm" lay-filter="roleEditForm" class="layui-form model-form">
        	  <div class="layui-form-item tow-inline">
                    <label class="layui-form-label">内容：</label>
                    <div class="layui-input-block" style="width: 50%;height:400px;margin-bottom:10px;">
                        <textarea name="info" id="info" class="layui-textarea TinyEditor" style="height:100%;"  maxlength="800" oninput="wordLeg(this);"
                                  onpropertychange="if(value.length>800) value=value.substr(0,800)"  autocomplete="off" class="layui-textarea"  lay-verType="tips">{$row.info|default=''}</textarea>
                        <div class="word"><span class="text_count ainfo">0</span>&nbsp;/&nbsp;<span class="num_count" id="numCount">800</span></div>
                    </div>
                </div>
                 </form>
      		 </div>
  	  </div>
</div>


<script>
 //控制字数
    function wordLeg(obj) {
        // var currleg = $(obj).val().length;
        // var length = $(obj).attr('maxlength');
        // console.log(obj)

        var currleg = $("#"+obj.id).val().length;
        var length = $("#"+obj.id).attr('maxlength');
        if (currleg > length) {
            layer.msg('字数请在' + length + '字以内',{time:1000});
        } else {
            $('.'+'a'+obj.id).text(currleg);
        }
    }
</script>
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