檢查與lodash

Question

另一個數組存在陣列是否可以檢查數組

A=[ 
    "EMPRESA", 
    "CD_MAQ", 
    "DT_INI_MAQ" 
] 

存在於另一個陣列

B=[ 
    "EMPRESA", 
    "CD_MAQ", 
    "DT_INI_MAQ", 
    "CD_WKC", 
    "DT_INI_WKC" 
] 

我要檢查，如果在陣列中所有條目存在乙

Answer 1

var A=[ 
 
    "EMPRESA", 
 
    "CD_MAQ", 
 
    "DT_INI_MAQ" 
 
]; 
 

 
var B=[ 
 
    "EMPRESA", 
 
    "CD_MAQ", 
 
    "DT_INI_MAQ", 
 
    "CD_WKC", 
 
    "DT_INI_WKC" 
 
]; 
 

 
if (_.difference(A,B).length === 0){ 
 
    // all A entries are into B 
 
}

<script src="https://cdn.jsdelivr.net/lodash/4.16.2/lodash.min.js"></script>

只需使用_.difference

Answer 2

可以使用2個數組的交集，然後比較原始。

var A=[ 
 
    "EMPRESA", 
 
    "CD_MAQ", 
 
    "DT_INI_MAQ" 
 
]; 
 

 
var B=[ 
 
    "EMPRESA", 
 
    "CD_MAQ", 
 
    "DT_INI_MAQ", 
 
    "CD_WKC", 
 
    "DT_INI_WKC" 
 
]; 
 

 
console.log(_.isEqual(_.intersection(B,A), A));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.16.2/lodash.js"></script>