根據字段對Json數據進行排序

Question

我有一個Json數據，需要在顯示它之前進行排序。我的Json如下。我需要根據ColumnLocation對它們進行排序。

[{ 
    "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" 
}] 

即數組排序應該有以下方式

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

Answer 1

無需lodash /下劃線的項目。您可以使用Array.prototype.sort： 由於您的值是字符串，必須首先分析它們成數字，然後比較：

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

簡短而親切。

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); 

需要注意的是，如果你不轉換爲數字，該排序可以不是你所期望的。

Answer 3

爲什麼不使用_.sortBy（http://underscorejs.org/#sortBy）？

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