$.inArray not worting on object JavaScript object any alternative?

Question

i am working on object from which i want to remove a value on specific address. i need the position of element and want to remove it from object

here is the code :

var matches =  {
     "users-email": "email", 
     "users-activated": "activated", 
     "users-created_at": "created_at", 
     "users-registration_page": "registration_page", 
     "profiles-firstname": "firstname"
} ;
var option = 'firstname';

var if_in = $.inArray(option, matches );
//console.log(matches)
if( if_in !== -1 )
{
    matches.splice(if_in, 1);
}

$.each(matches , function(i,v){
   $('.test').append(v+'<br>');
});

in my object $.inArray() not working it return -1 .

can someone help me to find this issue .

jsfiddle link

@Alexander That will only work if option is the key. In this case it is the value — Jonathan Crowe
– Jonathan Crowe, Commented Nov 13, 2014 at 16:41
@Haseeb - so youve used $.inArray previously, so what? In this case it wont do what you're hoping (expecting?) — Jamiec
– Jamiec, Commented Nov 13, 2014 at 16:44
$.inArray not worting on object No, it isn't, what makes you think it should? — A. Wolff
– A. Wolff, Commented Nov 13, 2014 at 16:47

Selvakumar Arumugam · Accepted Answer · 2014-11-13 17:00:19Z

4

Corrected answer to delete by value. You can use $.each to iterate over the object and delete the matching value.

$.each (matches, function(key, value) {
   if (value == option) {
      delete matches[key];
      return false; //deleted matching value
   }
});

to delete multiple keys by value,

var keysToDelete = [];
for (var key in matches) {
   if (matches[key] == option) {
      keysToDelete.push(key);
   }
};

for (var i = 0; i < keysToDelete.length; i++ ) {
   if (matches.hasOwnProperty(keysToDelete[i])) {
      delete matches[keysToDelete[i]];
   }
}

edited Nov 13, 2014 at 17:00

answered Nov 13, 2014 at 16:43

Selvakumar Arumugam

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1 Comment

gen_Eric Over a year ago

Because this doesn't solve the question. He's searching for a value, not key.

boxsome · Accepted Answer · 2014-11-13 16:44:32Z

4

If you want to check if your option matches a value, simplest way would be to iterate through each property and check the values that way

var matches =  {"users-email": "email", "users-activated": "activated", "users-created_at": "created_at", "users-registration_page": "registration_page", "profiles-firstname": "firstname"} ;
var option = 'firstname';

for (var key in matches) {
    if (matches[key] === option) {
        alert ("IN");
        break;
    }
}

answered Nov 13, 2014 at 16:44

boxsome

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Comments

Jhonny D. Cano -Leftware- · Accepted Answer · 2014-11-13 16:43:19Z

3

It seems like you're checking against the value and not the key; maybe something like this?

var key = undefined;
for(var i in matches) {
  if (matches[i] === option)  {key = i; break; }
}
if (key !== undefined) delete matches[key];

answered Nov 13, 2014 at 16:43

Jhonny D. Cano -Leftware-

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1 Comment

gen_Eric Over a year ago

Might wanna break; after finding the key? :-P

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