How to remove object by key in Javascript array?

Question

I have an array like this one:

[{
  '0': [7]
}, {
  references: [0]
}, {
  '1': [8]
}, {
  references: [9]
}, {
  '2': [20]
}, {
  references: [50]
}]

I want to remove all objects containing the reference key. Any suggestions?

please add the object in litaral notation.

Nina Scholz
– Nina Scholz

2016-08-20 17:59:07 +00:00
Commented Aug 20, 2016 at 17:59 — Nina Scholz
– Nina Scholz, Commented Aug 20, 2016 at 17:59
array has been transformed after JSON.parse(a)

DDD
– DDD

2016-08-20 18:32:03 +00:00
Commented Aug 20, 2016 at 18:32 — DDD
– DDD, Commented Aug 20, 2016 at 18:32

Thomas · Accepted Answer · 2016-08-20 18:18:40Z

4

not pop or splice, filter

var a = [
           { 0:[7]}, 
           { references:[0]}, 
           { 1:[8]}, 
           {references:[9]}, 
           { 2:[20]}, 
           { references:[50]}
];

var filteredA = a.filter(function(item){ return !('references' in item) });

answered Aug 20, 2016 at 18:18

Thomas

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Comments

H. Jabi · Accepted Answer · 2016-08-20 18:10:23Z

0

Use object in literal notation. Then you can find the key by hasOwnProperty method.

var a = [
           { 0:[7]}, 
           { references:[0]}, 
           { 1:[8]}, 
           {references:[9]}, 
           { 2:[20]}, 
           { references:[50]}
]
for(i=0; i<a.length; i++) { 
    if(a[i].hasOwnProperty('references')) { 
        a.splice(i, 1);
    } 
}

answered Aug 20, 2016 at 18:10

H. Jabi

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