Find Index of the Object an Array Angularjs

You can use array.findIndex for this:

var d = [{
  "Name": "Alfreds Futterkiste",
  "Country": "Germany"
}, {
  "Name": "Berglunds snabbköp",
  "Country": "Sweden"
}, {
  "Name": "Centro comercial Moctezuma",
  "Country": "Mexico"
}, {
  "Name": "Ernst Handel",
  "Country": "Austria"
}];
var searchCountry = "Austria"
var index = d.findIndex(x=>x.Country === searchCountry)
console.log(index)

Note: array.findIndex is a part of ES6.

Use findIndex method - 
   var index = $scope.records.findIndex(x=>x.Country==='Austria')

function getIndexByCountryName(country)
    var found = $scope.records.find(function(item){return item.Country === country});
    return $scope.records.indexOf(found);
}

You can do which returns the countries and then finds the country.

$scope.records.map((item) => { return item.Country;}).indexOf('Austria')

The problem with the above code iterates once through each element to generate a map and then finds the index. You can use a simple for loop:

var index = (arr, k, v) => { 
   var i = -1;len = (arr || []).length;  
   for (i = 0; i < len; i++) { 
     if (arr[i][k] === v) 
       return i;
   }
   return -1;
} 

I noticed a lot of findIndex solutions. Please note: FindIndex method has been added to the ECMAScript 6 specification and may not be available in all JavaScript implementations yet as per MDN.

You can use the polyfill for findIndex() and use the findIndex solution that others suggested. If you do not want to use the polyfill you can use the map and indexOf that I put as solution.

I have registered this method and it works like charm,

Array.prototype.getIndexByValue = function (name, value) {
        for (var i = 0, len=this.length; i <len; i++) {
            if (this[i][name]) {
                if (this[i][name] === value) {
                    return i
                }
            }
        }
        return -1;
    };

var d = [{
  "Name": "Alfreds Futterkiste",
  "Country": "Germany"
}, {
  "Name": "Berglunds snabbköp",
  "Country": "Sweden"
}, {
  "Name": "Centro comercial Moctezuma",
  "Country": "Mexico"
}, {
  "Name": "Ernst Handel",
  "Country": "Austria"
}];


var index = d.getIndexByValue('Country','Austria');
console.log(index)//will print 3

Using a for - in loop as it is a JSON array, you can do this

for(i in records) {
if(records[i].country=="Austria") 
console.log("index is :"+ parseInt(i)); // print index
}