CODEWITHSUNDEEP
javascriptjquery
CarlosZ
CarlosZ

Reputation: 73

How I get the index of especific row to delete it

I have this array:

{"actividades":[
    {"id_miembro":"V-005","id_dpto":"D-01","id_actividad":"AC-04","id_seccion":"S-03"},
    {"id_miembro":"V-006","id_dpto":"D-01","id_actividad":"AC-01","id_seccion":"S-02"},
    {"id_miembro":"V-007","id_dpto":"D-01","id_actividad":"AC-02","id_seccion":"S-01"},
    {"id_miembro":"V-008","id_dpto":"D-01","id_actividad":"AC-03","id_seccion":"S-01"}
]}

How can i get the index of the array when "id_miembro" = "V-007" to delete this data from array?

Upvotes: 0

Views: 70

Answers (4)

Karl-André Gagnon
Karl-André Gagnon

Reputation: 33870

Other answer are great for removing an element by in an array, but in case you want the index, here a little function for you :

function getIndex(arr, key, val, single){
    var rArr = $.map(arr, function(obj, i){
        if(obj[key] === val) return i;
    });

    return single ?
        (rArr.length ? rArr[0] : -1):
        rArr; 
}

You can the call it like that :

var myIndex = getIndex(obj.actividades, 'id_miembro', 'V-007', true);

Where parameters goes like this :

  1. The object you are searching in;
  2. The key you are looking at;
  3. The value that match;
  4. Return a single index [integer] or all matches [array].

Here's a live example : http://jsfiddle.net/wLDR2/

Upvotes: 0

Cerbrus
Cerbrus

Reputation: 72857

Simply using JavaScript's Array.prototype.filter():

Assuming:

myObj = {"actividades":[
    {"id_miembro":"V-005","id_dpto":"D-01","id_actividad":"AC-04","id_seccion":"S-03"},
    {"id_miembro":"V-006","id_dpto":"D-01","id_actividad":"AC-01","id_seccion":"S-02"},
    {"id_miembro":"V-007","id_dpto":"D-01","id_actividad":"AC-02","id_seccion":"S-01"},
    {"id_miembro":"V-008","id_dpto":"D-01","id_actividad":"AC-03","id_seccion":"S-01"}
]}

Then:

myObj.actividades = myObj.actividades.filter(function(e){
    return e.id_miembro !== "V-007";
});

(.filter returns the filtered array. I'm assigning it to the old object, as a replacement, but you can use it in any variable you want, of course)

However, .filter()'s IE support is IE 9+. You might want to use the plyfill provided in the MDN link if you want to support older browsers.

Upvotes: 0

Gergo Erdosi
Gergo Erdosi

Reputation: 42048

It's easy with a library like Lo-Dash:

var index = _.findIndex(array.actividades, { 'id_miembro': 'V-007' });

See it on JSFiddle.

Upvotes: -1

Rajaprabhu Aravindasamy
Rajaprabhu Aravindasamy

Reputation: 67207

You can do that with $.grep(),

var newArray = $.grep(xObj.actividades,function(val,i){
  return val.id_miembro !== "V-007";
});

Note: i just assume that you are having that JSON in a variable called xObj

API: http://api.jquery.com/jquery.grep/

Upvotes: 3

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