Omitting a value from an object in javascript if it's an empty string

Question

function a (METRIC,DIMENTIONS){
  var args = {
     'ids': ids,
     'start-date': START_DATE,
     'end-date': END_DATE,
     'metrics': METRIC,
     'dimensions': DIMENTIONS
  };
}

I have this array in javascript where dimensions is an optional value i want to check if DIMENTIONS is an empty string i want my args to look like this :

var args = {
     'ids': ids,
     'start-date': START_DATE,
     'end-date': END_DATE,
     'metrics': METRIC
  };

i tried this :

var args = {
     'ids': ids,
     'start-date': START_DATE,
     'end-date': END_DATE,
     'metrics': METRIC,
    DIMENTIONS!=''? 'dimensions': DIMENTIONS : ''
  };

but this will keep the , after METRIC and will produce an error

Possible duplicate of How to remove a property from a JavaScript object — diziaq
– diziaq, Commented Dec 3, 2015 at 7:30
No it is not a duplicate. He does not want to include dimension if DIMENTIONS are empty. — mplungjan
– mplungjan, Commented Dec 3, 2015 at 7:33

Hanky Panky · Accepted Answer · 2015-12-03 07:30:43Z

2

if( !args.dimensions )
 delete args.dimensions;

That's about it :)

edited Dec 3, 2015 at 7:30

answered Dec 3, 2015 at 7:27

Hanky Panky

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4 Comments

Sora Over a year ago

but how did we check if DIMENTION is null ?

Hanky Panky Over a year ago

You said you wanted to check if it is an empty string, this code makes that check

mplungjan Over a year ago

You include it and then delete it. That is not optimal

Hanky Panky Over a year ago

I don't, OP does :) You're right they shouldn't be doing that. Guess i focused on the question title mostly

Navaneeth · Accepted Answer · 2015-12-03 07:29:38Z

1

naive and simple solutuion:

function a (METRIC,DIMENTIONS){
  var args = {
     'ids': ids,
     'start-date': START_DATE,
     'end-date': END_DATE,
     'metrics': METRIC
  };
  
  if(DIMENTIONS) {
  args['dimensions']   = DIMENTIONS;
  }
}

answered Dec 3, 2015 at 7:29

Navaneeth

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1 Comment

mplungjan Over a year ago

Beat me by 11 secs - you may want to have dimentions if they are 0

Rayon · Accepted Answer · 2015-12-03 07:30:48Z

1

Do not add this key in object initially. Check if is a valid value then add it!

var args = {
  'ids': ids,
  'start-date': START_DATE,
  'end-date': END_DATE,
  'metrics': METRIC
};
if (typeOf DIMENTIONS !== 'undefined') {
  args.dimensions = DIMENTIONS;
}

answered Dec 3, 2015 at 7:30

Rayon

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