Javascript：如果至少有一个值是唯一的，则推送新数组

Question

我有一个网格数据，我向他推送新数据。新数据必须包含至少一个不同的值。

我试过这个：

vm.checkUnique = function () {
    var gridData = vm.sanctionReferencesGridOptions.data;
    var formData = vm.editableGrid.newRowForm;
    for (var i = 0; i < gridData.length; i++) {
        var rowData = gridData[i]
        for (var key in rowData) {
            console.log('rowData: ' + key);
            for (var formKey in formData) {
                console.log('formKey: ' + formKey);
            }
        }
    }
}

vm.sanctionReferencesGridOptions.data = [
    {
        "code": 1111,
        "listName": "List 1",
        "sinceDate": "2017-08-23",
        "endDate": "2017-08-23"
    }, {
        "code": 2222,
        "listName": "List 2",
        "sinceDate": "2017-08-23",
        "endDate": "2017-08-23"
    }
 ]

vm.editableGrid.newRowForm = {
    code: "1111", 
    listName: "List 1", 
    sinceDate: "2017-08-23", 
    endDate: "2017-08-23"
}

因此，在此示例中，我必须显示包含重复行数据的错误消息..

感谢您的帮助！