记一次 bootstrap-table 上下键切换输入单元格

前端表格使用的是 bootstrap-table
前端相关代码

<table id="table"></table>
<script>
    $table.on("click-cell.bs.table", handleCellClick)
    function handleCellClick(e, field, value, row, $element) {
        if (field === "xxx" || field === "xxx") {
            ....
        }else if (field === ""){  // 我要能上下键切换编辑的单元格
            $element.attr('contenteditable', true).focus()
            bindEditHandlers($element, field, value, $element.parent().data('index'));
        }
    }

    function bindEditHandlers($cell, field, value, rowIndex){

        $cell.unbind('blur').bind('blur', function () {
            let tdValue = $cell.text()
            // console.log("旧数据:", value, " 新数据:", tdValue)

            if(value == tdValue){
                return;
            }else{
                let row = $table.bootstrapTable('getData')[rowIndex];
                let index = $cell.parent().data('index')

                console.log("rowIndex", rowIndex, "index", index)

                saveData(row.id, field, tdValue, row, $cell, index)   // 自己的后端交互方法
            }

        })

        $cell.unbind('keydown').bind('keydown', function (e) {
            if(e.which === 40){ // 键盘下键
                e.preventDefault(); // 阻止默认行为

                let nextRow = $cell.closest('tr').next();
                if(nextRow.length){
                let nextCell = nextRow.find('td').eq($cell.index());
                    if (nextCell.length){
                        nextCell.attr('contenteditable', true);
                        $cell.removeAttr('contenteditable');
                        nextCell.focus();

                        bindEditHandlers(nextCell, field, nextCell.text(), nextRow.data('index'));
                    }else {
                        console.log("没找到 nextCell")
                    }
                }else {
                    console.log("没找到 nextRow")
                }

            }else if (e.which === 38){ // 键盘上键
                e.preventDefault(); // 阻止默认行为
                let previousRow = $cell.closest('tr').prev();
                if (previousRow.length){
                    let previousCell = previousRow.find('td').eq($cell.index());
                    if (previousCell.length){
                        previousCell.attr('contenteditable', true);
                        $cell.removeAttr('contenteditable');
                        previousCell.focus();

                        bindEditHandlers(previousCell, field, previousCell.text(), previousRow.data('index'));
                    }else {
                        console.log("没找到 previousCell")
                    }
                }else {
                    console.log("没找到 previousRow")
                }

            }else if (e.which === 13){ // 回车
                e.preventDefault(); // 阻止默认行为
                $(this).blur();
            }
        })
    }