Removing a JavaScript property inside a specific Object within an Array

Question

I have an object that looks like this when I do a stringify():

{"key-1":{"inner_key_obj-1":{"A":"1", "AA":"11", "AAA":"111"}, "inner_key_obj-2":{"B":"2", "BB":"22", "BBB":"222"}, "inner_key_obj-3":{"C":"3", "CC":"33", "CCC":"333"}}, "key-2" : "not-an-object-property" }

I'd like to search for and remove they key inner_key_obj-2 so that the object becomes:

{"key-1":{"inner_key_obj-1":{"A":"1", "AA":"11", "AAA":"111"},  "inner_key_obj-3":{"C":"3", "CC":"33", "CCC":"333"}}, "key-2" : "not-an-object-property" }

I know I can use delete to remove a key and its value from an object, but how do I loop thru this to get there?

I did some basic tests such as this:

  for (var key in object) 
        {
            if (object.hasOwnProperty(key)) 
            {                
                //Now, object[key] is the current value
                if (object[key] == null)
                { 
                    delete object[type];
                }
            }
        }

...but to no avail. Can someone explain how to loop thru this?

Why would you need to iterate? Do you need to delete the sub-object with key inner_key_obj-2 only in key1, or in any object at the higher level? — jcaron
– jcaron, Commented Dec 15, 2015 at 0:22
@jcaron I am looking to delete a key at that specific position. Basically, the first property in this object (key-1) is an array of objects. I need to remove one object out of that array. — TheLettuceMaster
– TheLettuceMaster, Commented Dec 15, 2015 at 0:24
Is the object that holds the property always on the root object under the property key-1? Or you'd need to search for the object that holds inner_key_obj-2 first? — MinusFour
– MinusFour, Commented Dec 15, 2015 at 0:29

jcaron · Accepted Answer · 2015-12-15 00:26:53Z

2

Doesn't

delete object["key-1"]["inner_key_obj-2"];

do what you want?

answered Dec 15, 2015 at 0:26

jcaron

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1 Comment

TheLettuceMaster Over a year ago

Why yes, yes it does! I really overthought that one. I am used to doing this stuff in php and in mind was thinking from a whole different viewpoint. Thanks! Will mark correct.

Jeremy Jackson · Accepted Answer · 2015-12-15 00:28:49Z

0

I'd just make a new object

var newObject = {};
for(key in object['key-1']){
    if(key != 'inner_key_obj-2'){
        newObject['key-1'][key] = object[key-1][key];
    }
}

Or

delete object["key-1"]["inner_key_obj-2"];

answered Dec 15, 2015 at 0:28

Jeremy Jackson

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