在JavaScript中搜索嵌套对象数组

Question

I have an object like one below and and I want to retrieve "SubscriptionId" for the "SubscriptionScheme='daily' if exists or return false. I am a bit struggling combining filter and find methods. Thanks in advance.

    {
      [ 
       {
        "SubscriptionId": "s1 ",
        "SubscriptionType": "User",
        "SubscriptionFieldList": 
           {
             "SubscriptionFieldInfo": [
               {
                 "SubscriptionMethod": "Direct",
                 "SubscriptionScheme": "Monthly"
               }
             ]
          }
       },
       {
       "SubscriptionId": "s2 ",
       "SubscriptionType": "User",
       "SubscriptionFieldList": {
       "SubscriptionFieldInfo": [
          {
            ":SubscriptionMethod": "Direct",
            "SubscriptionScheme": "daily"
          }
        ]
      }
     }
   ]
  }

So expected result is "s2 " .

Answer 1

You could try something like the following:

 var arr = [ { "SubscriptionId": "s1 ", "SubscriptionType": "User", "SubscriptionFieldList": { "SubscriptionFieldInfo": [ { "SubscriptionMethod": "Direct", "SubscriptionScheme": "Monthly" } ] } }, { "SubscriptionId": "s2 ", "SubscriptionType": "User", "SubscriptionFieldList": { "SubscriptionFieldInfo": [ { ":SubscriptionMethod": "Direct", "SubscriptionFieldInfo": "daily" } ] } } ]; var obj = arr.filter(function(item){ return item.SubscriptionFieldList.SubscriptionFieldInfo.some(x=>x.SubscriptionFieldInfo === "daily"); }); if(obj !== undefined && obj.length == 1){ console.log(obj[0].SubscriptionId); }