對象數組的篩選函數

Question

我需要實現過濾對象數組的函數。 Filters數組由具有屬性名稱和值的對象組成，以便根據用戶中的給定屬性進行過濾。

例子：

var filters = [ 
    { 
    column: 'username', 
    value: 'test user' 
    }, 
    { 
    column: 'name', 
    value: 'test name' 
    } 
] 

var users = [ 
    { 
     name: 'test name user', 
     username: 'some test user' 
    }, 
    { 
     name: 'another name', 
     username: 'another username' 
    } 
] 

// filter logic 

console.log(users); // [{'name': 'test name user', 'username': 'some test user'}] 

Answer 1

您可以通過Array#some迭代（或者 - 如果至少一個匹配）遍歷用戶列表和Array#filter他們或Array#every（和 - 都必須一致）。

var filters = [{"column":"username","value":"test user"},{"column":"name","value":"test name"}]; 
 

 
var users = [{"name":"test name user","username":"test user"},{"name":"another name","username":"another username"}]; 
 

 
var result = users.filter(function(user) { 
 
    return filters.some(function(filter) { // use some for Or, and every for And 
 
    return user[filter.column] === filter.value; 
 
    }); 
 
}); 
 

 
console.log(result);

Answer 2

您還可以使用Functions#ArrowFunctions和сhange原始數組一樣：

var filters = [{"column":"username","value":"test user"},{"column":"name","value":"test name"}]; 
 

 
var users = [{"name":"test name user","username":"test user"},{"name":"another name","username":"another username"}]; 
 

 
users = users.filter((user) => { 
 
    return filters.some((filter) => { 
 
    return user[filter.column] === filter.value; 
 
    }); 
 
}); 
 

 
console.log(users);