Layui文本框限制正整数

 <input type="text" name="Number" lay-verify="required|integer" placeholder="请输入" value="" autocomplete="off" class="layui-input">

 layui.use('form', function () {
            var $ = layui.$
                , layer = layui.layer
                , form = layui.form

           form.verify({
           integer: [
               /^[1-9]d*$/
               , '只能输入正整数'
           ]
         });
     });