正在根据字段对 Json 数据进行排序

Question

我有一个 Json 数据，我需要在显示它之前对其进行排序。我的 Json 如下。我需要根据 ColumnLocation 对它们进行排序。

[{
  "Name": "PieChart",
  "Id": "1",
  "ColumnLocation": "0",
  "RowLocation": "0"
}, {
  "Name": "Calendar",
  "Id": "2",
  "ColumnLocation": "1",
  "RowLocation": "0"
}, {
  "Name": "FavouriteFilter",
  "Id": "3",
  "ColumnLocation": "2",
  "RowLocation": "0"
}, {
  "Name": "FilterResults",
  "Id": "4",
  "ColumnLocation": "0",
  "RowLocation": "1"
}, {
  "Name": "Watched",
  "Id": "5",
  "ColumnLocation": "1",
  "RowLocation": "1"
}]

即排序后的数组应具有以下形式的项目

col : 0, row 0
col : 0, row 1
col : 1, row 0
col : 1, row 1

Answer 1

不需要lodash/underscore。您可以使用 Array.prototype.sort：由于你的值是字符串，你必须先将它们解析成数字然后比较：

let a = [{"Name":"PieChart","Id":"1","ColumnLocation":"0","RowLocation":"0"},{"Name":"Calendar","Id":"2","ColumnLocation":"1","RowLocation":"0"},{"Name":"FavouriteFilter","Id":"3","ColumnLocation":"2","RowLocation":"0"},{"Name":"FilterResults","Id":"4","ColumnLocation":"0","RowLocation":"1"},{"Name":"Watched","Id":"5","ColumnLocation":"1","RowLocation":"1"}]

let sorted = a.sort((a, b) => parseInt(a.ColumnLocation) - parseInt(b.ColumnLocation));

console.log(sorted);

Answer 2

简短而甜美。

let arr = [{"Name":"PieChart","Id":"1","ColumnLocation":"0","RowLocation":"0"},{"Name":"Calendar","Id":"2","ColumnLocation":"1","RowLocation":"0"},{"Name":"FavouriteFilter","Id":"3","ColumnLocation":"2","RowLocation":"0"},{"Name":"FilterResults","Id":"4","ColumnLocation":"0","RowLocation":"1"},{"Name":"Watched","Id":"5","ColumnLocation":"1","RowLocation":"1"}]

arr.sort ( ( a, b ) => { return parseInt ( a.ColumnLocation ) > parseInt ( b.ColumnLocation ) } );

console.log ( arr );

请注意，如果您不转换为数字，排序可能不是您所期望的。

Answer 3

为什么不使用 _.sortBy ( http://underscorejs.org/#sortBy )？

var mysortedarray = _.sortBy(myarray, 'ColumnLocation');

正在根据字段对 Json 数据进行排序

Sorting Json data based on a field

javascript

underscore.js

ecmascript-6

lodash