方法一：input框仅可输入数字
<input type="text" name="{{$field['field']}}" Oninput="value=value.replace(/[^\d]/g,'')" class="layui-input" value="" title="排序仅为数字"/>方法二：通过改变input类型
<input type="number" name="{{$field['field']}}" class="layui-input" value="" title="排序仅为数字"/>方法三：input框仅可输入数字且开头不能为0:
<input type="text" class="layui-input" name="{{$field['field']}}" value="" onkeyup='this.value=this.value.replace(/[^1-9]*$/,"")' onblur='this.value=this.value.replace(/^[0]+[0-9]*$/gi,"")' maxlength="5">
