在JavaScript中查找值是否属于数组

Question

I have following JavaScript Array

business: [{
      "id": 22,
      "name": "Private",
      "max_mem": 0,
      "gen_roomtype_id": 4,
      "status": 1,
      "type": 0,
      "set_value": 1
    },
    {
      "id": 6,
      "name": "Standard ward",
      "max_mem": 0,
      "gen_roomtype_id": 2,
      "status": 1,
      "type": 0,
      "set_value": 1
    },
    {
      "id": 7,
      "name": "Semi Private",
      "max_mem": 0,
      "gen_roomtype_id": 3,
      "status": 1,
      "type": 0,
      "set_value": 1
    }],      

"gen": [{
      "id": 5,
      "name": "laboratory",
      "description": "",
      "sharing": 0,
      "set_value": 2
    }],

And i have a idArray as following

idArray: [5, 7]

i would like to know whether the idArray values are belongs to "gen" Array or "business" Array.

Answer 1

You can use the function every

This approach assumes the input data is an object.

 var obj = { business: [{ "id": 5, "name": "Private", "max_mem": 0, "gen_roomtype_id": 4, "status": 1, "type": 0, "set_value": 1 }, { "id": 6, "name": "Standard ward", "max_mem": 0, "gen_roomtype_id": 2, "status": 1, "type": 0, "set_value": 1 }, { "id": 7, "name": "Semi Private", "max_mem": 0, "gen_roomtype_id": 3, "status": 1, "type": 0, "set_value": 1 } ], "gen": [{ "id": 5, "name": "laboratory", "description": "", "sharing": 0, "set_value": 2 }] }; var idArray = [5, 7]; var resultBusiness = idArray.every(n => obj.business.some(b => b.id === n)); var resultGen = idArray.every(n => obj.gen.some(b => b.id === n)); console.log("All in business: ", resultBusiness); console.log("All in Gen: ", resultGen); 

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