how to check in json data for any column value is there array/collection present using angular js?

Question

index.js

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {

  $scope.data =[{"Id":1,"Title":"en-US","Description":"UnitedStates","MyValues":[{"demo":"dish","Id":100,"Value":"Save"}]},
{"Id":1,"Title":"en-UK","Description":"UK","MyValues":[{"demo":"Myvalu","Id":102,"Value":"Delete"}]}]
  $scope.cols = Object.keys($scope.data[0]);

  $scope.notSorted = function(obj){
    if (!obj) {
        return [];
    }
    return Object.keys(obj);
}  
});

I want to check in $scope.data is there any column value as array/collection in above code MyValues is a array/collection , I tried using angular.isArray(value) but it does not work , any help?

I don't understand the question. You are just trying to determine if $scope.data is an array? — shieldstroy, Jul 16 '15 at 17:42
yes i'm trying to determine in $scope.data is there a array/collection present for any column value — Neo, Jul 16 '15 at 17:42
I tried the same :( any live example would be helpful thanks — Neo, Jul 16 '15 at 17:44
Try these approaches: http://stackoverflow.com/questions/767486/how-do-you-check-if-a-variable-is-an-array-in-javascript. — shieldstroy, Jul 16 '15 at 17:45
Array.isArray($scope.data) will tell you if $scope.data is an array. Are you trying to determine if something INSIDE of $scope.data is an array? — shieldstroy, Jul 16 '15 at 17:46
Looks like Ahmed gave a perfect answer, as far as I understand the question at least — shieldstroy, Jul 16 '15 at 17:51
@shieldstroy yes, i want to check whether $scope.data is having any column as array/collection or not — Neo, Jul 17 '15 at 08:22

score 2 · Accepted Answer · answered Jul 16 '15 at 17:46

2

You can use this check Array.isArray([1,2,3])

$scope.data.map(function(obj){
  return Object.keys(obj).filter(function(k){
       return Array.isArray(obj[k]);
    });
});

The code above will give you all the lists for each element in the Array of $scope.data ,, do you want a specific format ??

answered Jul 16 '15 at 17:46

Ahmed Eid

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yup its work as expected actually I tried this to find out answer for this question check out http://stackoverflow.com/questions/31447821/how-do-i-generate-nested-table-in-one-column-if-it-has-list-of-values-using-angu – Neo Jul 16 '15 at 17:52
if you able to answer this question also it will be great help thanks http://stackoverflow.com/questions/31447821/how-do-i-generate-nested-table-in-one-column-if-it-has-list-of-values-using-angu – Neo Jul 16 '15 at 17:53

score 1 · Answer 2 · answered Jul 16 '15 at 17:53

1

Better technique is to use the some() with angular.isArray():

if($scope.data.some(angular.isArray)) {
   //do awesome stuff
}

answered Jul 16 '15 at 17:53

deostroll

11,661
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but how do I used this in table tag? in html? – Neo Jul 17 '15 at 08:25
i tried to achieve this, http://stackoverflow.com/questions/31447821/how-do-i-generate-nested-table-in-one-column-if-it-has-list-of-values-using-angu – Neo Jul 17 '15 at 09:11

how to check in json data for any column value is there array/collection present using angular js?

2 Answers2