从Javascript数组中获取数组数据？

Question

我有这样一种阵列的javasript：

{id: 'ZM', name: "Zambia"}, 
{id: 'MZ', name: "Mozambique"}, 
{id: 'BW', name: "Botswana"}, 
{id: 'NA', name: "Namibia"}, 
{id: 'MW', name: "Malawi"}, 
{id: 'ZW', name: "Zimbabwe"}, 

我怎么能由ID（ 'BW'，MW）取perticuler数组记录？例如，取后，我想数组记录如下图所示：

{id: 'BW', name: "Botswana"}, 
{id: 'MW', name: "Malawi"} 

Answer 1

你想是这样的：

function fetch(array, ids) { 
    return array.filter(function (el) {return ids.indexOf(el.id) !== -1;}); 
} 

它返回一个只包含IDS阵列中的那些ID阵列的过滤器版本。 YOu可以像这样使用它：

var arr = [ {id: 'ZM', name: "Zambia"}, 
{id: 'MZ', name: "Mozambique"}, 
{id: 'BW', name: "Botswana"}, 
{id: 'NA', name: "Namibia"}, 
{id: 'MW', name: "Malawi"}, 
{id: 'ZW', name: "Zimbabwe"}]; 

function fetch(array, ids) { 
    return array.filter(function (el) {return ids.indexOf(el.id) !== -1;}); 
} 

fetch(arr, ["BW","MW"]);//Outputs [{id: 'BW', name: "Botswana"},{id: 'MW', name: "Malawi"}]