使用 sortBy 方法排序在下划线中不起作用

Question

我正在尝试使用下划线 sortBy 方法对对象数组进行排序，json 如下

[
   {
      "styleId": 91,
      "styleName": "Style Label",
      "dataSourceId": 1,
      "dataSourceName": null,
      "stationeryId": 1,
      "stationeryName": null,
      "styleType": 1,
      "styleTypeName": "Labels",
      "isActive": true,
      "isPlainPaper": true,
      "isSystemMaintained": false,
      "isPublished": true,
      "designerUrl": null,
      "sourceStyleId": 0,
      "rowIndicatorCode": 2,
      "isDefault": null,
      "hasElement": true,
      "styleDesign": null,
      "createdBy": "real",
      "createdDate": 1494217733790,
      "modifiedBy": "superuser",
      "modifiedDate": 1494388952450,
      "rowVersion": "AAAAAAIC8ls="
   },
   {
      "styleId": 69,
      "styleName": "irtest",
      "dataSourceId": 1,
      "dataSourceName": null,
      "stationeryId": 16,
      "stationeryName": null,
      "styleType": 1,
      "styleTypeName": "Labels",
      "isActive": true,
      "isPlainPaper": false,
      "isSystemMaintained": false,
      "isPublished": true,
      "designerUrl": null,
      "sourceStyleId": 0,
      "rowIndicatorCode": 2,
      "isDefault": null,
      "hasElement": false,
      "styleDesign": null,
      "createdBy": "arun",
      "createdDate": 1493288218843,
      "modifiedBy": "real",
      "modifiedDate": 1494062410107,
      "rowVersion": "AAAAAAHZaDk="
   },
   {
      "styleId": 21,
      "styleName": "new style-copy",
      "dataSourceId": 1,
      "dataSourceName": null,
      "stationeryId": 5,
      "stationeryName": null,
      "styleType": 1,
      "styleTypeName": "Labels",
      "isActive": true,
      "isPlainPaper": false,
      "isSystemMaintained": false,
      "isPublished": true,
      "designerUrl": null,
      "sourceStyleId": 0,
      "rowIndicatorCode": 2,
      "isDefault": null,
      "hasElement": true,
      "styleDesign": null,
      "createdBy": "Nandita",
      "createdDate": 1493186162607,
      "modifiedBy": "Nandita",
      "modifiedDate": 1493186173807,
      "rowVersion": "AAAAAAEXEwI="
   },
   {
      "styleId": 97,
      "styleName": "style 1",
      "dataSourceId": 1,
      "dataSourceName": null,
      "stationeryId": 1,
      "stationeryName": null,
      "styleType": 1,
      "styleTypeName": "Labels",
      "isActive": true,
      "isPlainPaper": true,
      "isSystemMaintained": false,
      "isPublished": true,
      "designerUrl": null,
      "sourceStyleId": 0,
      "rowIndicatorCode": 2,
      "isDefault": null,
      "hasElement": true,
      "styleDesign": null,
      "createdBy": "real",
      "createdDate": 1494646737753,
      "modifiedBy": "real",
      "modifiedDate": 1494647127567,
      "rowVersion": "AAAAAAIxLKM="
   }
]

这是我的示例 json，我正在尝试按字段 styleName 对此 json 进行排序，例如`

var result = _.sortBy(ctrl.styles, function (o) { return o.styleName; });

我得到的结果如下

var result = _.sortBy(ctrl.styles, function (o) { return o.styleName; });

其中 ctrl.styles 是上面的 JSON，有什么地方做错了吗？

Answer 1

var result =  _.sortBy(ctrl.styles, function (a) { return a.styleName.toUpperCase(); });

我面临的问题是 styleName 有不同的大小写，将 styleName 转换为大写解决了问题。Yashar的回答也解决了这个问题