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(https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/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
}