Underscore.js - Check if Object Array contains value

Question

I have the following Object and I want to check if Type.ID contains value 6508 :

 {
   "item": {
      "Feature": [
         {
            "ID": 85408,
            "Status": {
                "ID": 65,
             },
             "Type": {
                 "ID": 6508,
                  "Volume": null
              },
              "Manufacturer": null
          },
          {
             "ID": 85409,
             "Status": {
                 "ID": 65,
              },
              "Type": {
                  "ID": 6509,
                   "Volume": null
              },
              "Manufacturer": null
          }
       ],
       "Errors": {
           "Result": 0,
           "Message": ""
        },
       "RecordCount": 2
      }
 }

I can muster the following:

for (i = 0; i < data.item.Feature.length; i++) {
     if (data.item.Feature[i].Type.ID == 6508)
        return true;
}
return false;

How can I use underscore.js to do the same? The following doesn't work?

_.contains(data.item.Feature.Type.ID, 6508)

Brigand · Accepted Answer · 2017-04-02 07:26:15Z

5

You don't need underscore for this; example in plain JS.

data.item.Feature.some(function(x) { return x.Type.ID === 6508 });

answered Apr 2, 2017 at 7:26

Brigand

86.4k20 gold badges167 silver badges174 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

adam78 · Accepted Answer · 2017-04-02 07:37:02Z

3

Using @FakeRainBrigand JS code I've manged to achieve the same using underscore by doing the following:

_.some(data.item.Feature, function(f) {
       return f.Type.ID == 6508;
 })

answered Apr 2, 2017 at 7:37

adam78

10.2k24 gold badges111 silver badges223 bronze badges

Comments

Anand Gupta · Accepted Answer · 2017-04-03 19:54:29Z

0

Just a suggestion bro, if in case you want whole object (Inside 'Feature' List) not just the Boolean according to your search criteria, you can go this way as mentioned below.

var val = _.findWhere(data.item.Feature, {'Type': _.findWhere(_.pluck(data.item.Feature, 'Type'), {ID: 6509})});

This will return:

{
 "ID":85409,
 "Status":{
 "ID":65
},
 "Type":{
    "ID":6509,
    "Volume":null
    },
 "Manufacturer":null
}

edited Apr 3, 2017 at 19:54

answered Apr 3, 2017 at 19:48

Anand Gupta

3662 silver badges6 bronze badges

Collectives™ on Stack Overflow

Underscore.js - Check if Object Array contains value

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related