<!-- 只能输入正整数字,长度不能超过2 --> <input style="padding-top:5px;padding-bottom:5px" class="form-control col-sm-4" type="text" id="num" placeholder="" value="1" name="num" maxlength="8" onkeyup="value=value.replace(/[^\d]/g,'');value=(value==0)?'':value" onchange="value=value.replace(/[^\d]/g,'');value=(value==0)?'':value">
//页面点击回车触发按钮搜索 <script> document.onkeydown=function(event){ var e = event || window.event || arguments.callee.caller.arguments[0]; if(e && e.keyCode==13){ $("#queryButton").click(); } }; </script>