请问各位大佬如何替换原网页中的按键监听事件

琦玉

$(document).keydown(function (event) {//alert(event.keyCode);
                switch (event.keyCode) {
                    case 13: //Enter
                        if (chooseNo == "saleorder.sourceid") {
                            $("input[name='saleorder.remark']").focus();
                            return false;
                        }
                        if (chooseNo == "saleorder.remark") {
                            $("input[name='saleorder.remark']").blur();
                            beginAddDetail();
                        }
                        if (chooseNo == "unitnum") {
                            $("input[name=auxnum]").focus();
                            return false;
                        }
                        if (chooseNo == "auxnum") {
                            $("input[name=overnum]").focus();
                            return false;
                        }
                        if (chooseNo == "overnum") {
                            if ($("input[name=taxprice]").attr("readonly") == "readonly") {
                                $("input[name=remark]").focus();
                            }
                            else {
                                $("input[name=taxprice]").focus();
                            }
                            return false;
                        }
                        if (chooseNo == "taxprice") {
                            $("input[name=boxprice]").focus();
                            return false;
                        }
                        if (chooseNo == "boxprice") {
                            $("input[name=remark]").focus();
                            return false;
                        }
                        if (chooseNo == "remark") {
                            $("input[name=savegoon]").click();
                            return false;
                        }
                        break;
                    case 27: //Esc
                        $("#sales-remark-swapOrderDetailAddPage").focus();
                        $("#sales-dialog-swapOrderAddPage-content").dialog('close');
                        break;
                    //case 37: //←
                    //  $("#button-back").click();
                    //break;
                    //case 39: //→
                    //  $("#button-next").click();
                    //break;
                    case 38://↑
                        var detaildialog = $("#sales-dialog-swapOrderAddPage-content").length;
                        if(detaildialog == 0 ){
                            var row = $wareList.datagrid('getSelected');//console.log(row);
                            var selectindex = $wareList.datagrid('getRowIndex', row);
                            if(selectindex == -1){
                                selectindex = 0;
                            }else{
                                $wareList.datagrid('unselectRow',selectindex);
                                -- selectindex;
                            }
                            $wareList.datagrid('selectRow',selectindex);
                            var selectRow =  $wareList.datagrid('getRows')[selectindex];
                            var customerid = $("#sales-customer-hidden-swapOrderAddPage").val();
                            if (priceFloat > 0 && selectindex > -1) {
                                showPirceMenu(selectindex,customerid, selectRow.goodsid);
                            }else{
                                $("#sales-goodsPriceMenu-orderPage").menu('hide');
                            }

                        }

                        break;
                    case 40://↓
                        var detaildialog = $("#sales-dialog-swapOrderAddPage-content").length;
                        if(detaildialog == 0 ){
                            var row = $wareList.datagrid('getSelected');//console.log(row);
                            var selectindex = $wareList.datagrid('getRowIndex', row);
                            if(selectindex == -1){
                                selectindex = 0;
                            }else{
                                $wareList.datagrid('unselectRow',selectindex);
                                ++ selectindex;
                            }
                            $wareList.datagrid('selectRow',selectindex);
                            var selectRow =  $wareList.datagrid('getRows')[selectindex];
                            var customerid = $("#sales-customer-hidden-swapOrderAddPage").val();
                            if (priceFloat > 0  && selectRow != undefined && selectRow.goodsid != undefined) {
                                showPirceMenu(selectindex,customerid, selectRow.goodsid);
                            }else{
                                $("#sales-goodsPriceMenu-orderPage").menu('hide');
                            }
                        }
                        break;
                    case 65: //a
                        if (event.altKey) {
                            $("#button-add").click();
                        }
                        break;
                    case 83: //s
                        if (event.ctrlKey) {
                            $("#button-save").click();
                            return false;
                        }
                        break;
                }
            });

以上是原代码，主要想改原网页里按回车input获得焦点的顺序，我用removeEventListener不成功。

潘钜森

window.addEventListener("keydown", (event) => {
    const e = window.event || event
    const k = e.keyCode || e.which
    event.stopPropagation()
    if (e.ctrlKey || e.shiftKey || e.altKey || e.metaKey) return
    switch (k) {
        case 32:
            alert("success!")
            break
    }
}, true)

琦玉

虽不算完美，也谢谢大佬解答