[angularjs] How do I use $rootScope in Angular to store variables?

first store the values in $rootScope as

.run(function($rootScope){
$rootScope.myData = {name : "nikhil"}
})

.controller('myCtrl', function($scope) {
var a ="Nikhilesh";
$scope.myData.name = a;
});

.controller('myCtrl2', function($scope) {
var b = $scope.myData.name;
)}

$rootScope is the parent of all $scope, each $scope receives a copy of $rootScope data which you can access using $scope itself.

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