Delete an object in an object

Question

I'm pretty new to JavaScript/AngularJS, I would like to delete an object in an object.

Let's take this for example:

var heroes = {
  0: { 
      name: 'Batman',
      gender: 'M'
  },
  1: {
      name: 'Superman',
      gender: 'M'
  },
  3: {
      name: 'Catwoman',
      gender: 'F'
  }
};

I would like to delete the object when gender == 'F'.

for(var hero of heroes) {
    if(hero.gender == 'F') {
        //Delete her
    }
}

delete hero does not work, I have:

SyntaxError: applying the 'delete' operator to an unqualified name is deprecated

Please use the search before you ask a new question: [`[javascript] remove property`](https://stackoverflow.com/search?q=%5Bjavascript%5D+remove+property). — Felix Kling, May 31 '16 at 14:20
Are you sure you have a `for...of` loop? They don't work with objects by default. Use `for...in`. — Felix Kling, May 31 '16 at 14:23
Nothing like an edit that changes the question from what was originally asked. — epascarello, May 31 '16 at 14:23
My `for...of` seems to work. The problem came on `delete hero;`. So, maybe am I iterating on an array of objects? :/ — , May 31 '16 at 14:33
*"maybe am I iterating on an array of objects"* Well, you should know better than us :P If that's the case then it's a duplicate of [remove objects from array by object property](http://stackoverflow.com/q/16491758/218196) — Felix Kling, May 31 '16 at 14:45

epascarello · Answer 1 · 2016-05-31T14:23:07.493

0

Use the delete operator

delete heroes[3]

If you do not know the key:

Object.keys(heroes).forEach( function (key) { //loop over the keys
    if (heroes[key].name==="Catwoman") {      //compare the name
        delete heroes[key];                   //remove the entry
    } 
} );

edited May 31 '16 at 14:23

answered May 31 '16 at 14:16

epascarello

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score 0 · Answer 2 · answered May 31 '16 at 14:16

0

Use delete operator.

The delete operator removes a property from an object.

delete heroes['3'];

answered May 31 '16 at 14:16

Nina Scholz

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score 0 · Answer 3 · answered May 31 '16 at 14:16

0

delete heroes[3];

Use above code

answered May 31 '16 at 14:16

Akshey Bhat

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Delete an object in an object

3 Answers3