来自如何在 jqgrid 中保留当前行的答案的代码
用于保存 jqgrid 状态。它使用列号保存 jqgrid 列状态。如果在服务器中更改 jqgrid colmodel,这会导致浏览器中的 javascript 错误。
冻结 JQGrid评论中的rownum 列和https://github.com/free-jqgrid/jqGrid/blob/master/README49.md描述方法remapColumnsByName。我希望使用它可以解决问题。
免费的 jqgrid 是从今天的 git master 下载的。在调整列大小或移动行后保存状态
saveColumnState.call($grid, $grid[0].p.remapColumns);
改为
saveColumnState.call($grid, $grid[0].p.remapColumnsByName);
并在 loadComplete 代码中恢复状态
    if (isColState && myColumnsState.permutation.length > 0 &&
                      myColumnsState.permutation.length === cm.length) {
        $grid.jqGrid("remapColumns", myColumnsState.permutation, true);
    }
和
    if (isColState && myColumnsState.permutation.length > 0 &&
                      myColumnsState.permutation.length === cm.length) {
        $grid.jqGrid("remapColumnsByName", myColumnsState.permutation, true);
    }
现在行
 if (isColState && myColumnsState.permutation.length > 0 &&
导致错误
Uncaught TypeError: Cannot read property 'length' of undefined
如果更改列定义,如何解决此问题以便可以使用列状态?
方法定义为
var saveColumnState = function (perm) {
    var colModel = this.jqGrid('getGridParam', 'colModel'),
        i, l = colModel.length, colItem, cmName,
        postData = this.jqGrid('getGridParam', 'postData'),
        columnsState = {
            search: this.jqGrid('getGridParam', 'search'),
            page: this.jqGrid('getGridParam', 'page'),
            rowNum: this.jqGrid('getGridParam', 'rowNum'),
            sortname: this.jqGrid('getGridParam', 'sortname'),
            sortorder: this.jqGrid('getGridParam', 'sortorder'),
            autoedit: autoedit,
            rownumbers: $grid.jqGrid('getGridParam', 'rownumbers') && !$grid[0].p.colModel[0].hidden,
            searchWindow: searchParams,
            editWindow: editParams,
            permutation: perm,
            selectedRows: idsOfSelectedRows,
            colStates: {}
        },
        colStates = columnsState.colStates;
    if (typeof (postData.filters) !== 'undefined') {
        columnsState.filters = postData.filters;
    }
    for (i = 0; i < l; i++) {
        colItem = colModel[i];
        cmName = colItem.name;
        if (cmName !== 'rn' && cmName !== 'cb' && cmName !== 'subgrid') {
            colStates[cmName] = {
                width: colItem.width,
                hidden: colItem.hidden
            };
        }
    }
    saveObjectInLocalStorage(myColumnStateName, columnsState);
};
var saveObjectInLocalStorage = function (storageItemName, object) {
    if (typeof window.localStorage !== 'undefined') {
        window.localStorage.setItem(storageItemName, JSON.stringify(object));
    }
};