檢查，如果所有屬性都是假的

Question

陣營狀態如下：

[ 
    {type: "Benzine", active: false}, 
    {type: "Diesel", active: false}, 
    {type: "Electricity", active: false} 
] 

我如何檢查是否所有active值都是假的。

有沒有辦法用lodash做到這一點？

Answer 1

您可以使用下面的測試閹每active屬性爲true：

var arr = [ 
 
     {type: "Benzine", active: false}, 
 
     {type: "Diesel", active: false}, 
 
     {type: "Electricity", active: false} 
 
    ] 
 

 
    console.log(arr.every(obj => obj.active));

var arr = [ 
 
     {type: "Benzine", active: true}, 
 
     {type: "Diesel", active: true}, 
 
     {type: "Electricity", active: true} 
 
    ] 
 

 
    console.log(arr.every(obj => obj.active));

var arr = [ 
 
     {type: "Benzine", active: false}, 
 
     {type: "Diesel", active: true}, 
 
     {type: "Electricity", active: false} 
 
    ] 
 

 
    console.log(arr.every(obj => obj.active));

Answer 2

可以使用loadash的各項功能，以檢查是否活躍是爲每個對象錯誤。

var data = [ 
    {type: "Benzine", active: false}, 
    {type: "Diesel", active: false}, 
    {type: "Electricity", active: true} 
]; 
// First argument is the data and second argument is the predicate to check 
var res = _.every(data, {active: false}); // Returns true if all elements pass the predicate match else false. 
document.getElementById("data").innerHTML = res;