javascript - 如何使用一组选项过滤列表

Question

我想通过将选项数组传递到也是一个数组的字段来过滤列表

let myFilters = ['filter1', 'filter4'];

let myArray = [
  { name: 'item1', options: ['filter1', 'filter5'] },
  { name: 'item2', options: ['filter1', 'filter2'] }
];

let myResultFiltered = myArray.filter(item => 
myFilters.includes(item.options))

标签： javascripttypescript

Answer 1

像这样的东西应该工作：

let myFilters = ['filter1', 'filter4'];

let myArray = [
  { name: 'item1', options: ['filter1', 'filter5'] },  // OUTPUT FOR: OR
  { name: 'item2', options: ['filter1', 'filter2'] },  // OUTPUT FOR: OR
  { name: 'item3', options: ['filter1', 'filter4'] },  // OUTPUT FOR: OR, AND
  { name: 'item4', options: ['filter2', 'filter3'] }   // OUTPUT FOR: NONE
];

// Includes each entry that fulfills AT LEAST ONE of the filter options
let myResultFilteredOR = myArray
   .filter(item => myFilters
      .some(myFilter=> item.options            // any ONE filter
         .some(option => option === myFilter)  // is AT LEAST ONCE in options
      )
   );

// Includes each entry that fulfills ALL of the filter options
let myResultFilteredAND = myArray
   .filter(item => myFilters   
      .every(myFilter=> item.options           // EVERY filter
         .some(option => option === myFilter)  // is AT LEAST ONCE in Options
      )
   );