javascript - Form text box keyboard enter event, how to clear the text box and specify the current text box?

Question

In the form, when the keyboard enters the Enter event, how to clear the text box and specify the current text box?

    var str=[];
            $("#ScanCode").keypress(function(event){

                if(event.keyCode==13){
                    var ScanCodeId=$(this).val();
                    if (ScanCodeId==""){
                        return false;
                    }else {
                        //判断是否重复
                        for(var i in str){
                            if(str[i]===ScanCodeId){
                                alert('您的条码与当前申请明细重复，请重新选择！');
                                return false;
                            }
                        }
                        str.push(ScanCodeId);
                        $.ajax({
                            url: '${ctx}/returns/departmentReturn/json/barcode?barcode='+ScanCodeId,
                            async: false,
                            type: 'get',
                            cache: false,
                            dataType: 'json',
                            success: function (res) {
                                var data = res.rows;
                                if(data==""){
                                    return false;
                                }else {
                                    ScanRow('#departmentReturnDetailsList', departmentReturnDetailsRowIdx, departmentReturnDetailsTpl, data);
                                    departmentReturnDetailsRowIdx = departmentReturnDetailsRowIdx + 1;
                                }
                            }
                        });
                        $(this).val('');
                    }
                    $("#returnReason").blur();
                    $("#ScanCode").focus();

                }

            })

Here is the whole code, please solve it. . .

Answer 1

event.keyCode==13 This is used to determine carriage return

.val("");//can be used to clear

.focus();//This is the event to get focus