教你前端input框只允许输入正整数

<input class="layui-input" οnkeyup="value=zhzs(this.value)" lay-verify="required|number" id="" name="" >

<script type="text/javascript">
        //转化正整数
        function zhzs(value){

            value = value.replace(/[^\d]/g,'');
            if(''!=value){
                value = parseInt(value);
            }
            return value;
        }

</script>