Test

test1

HTML

<div ng-app="MyApp">
    <div ng-controller="MyController">
        <h1>{{ParsedValue}}</h1>
    </div>
</div>

JavaScript

angular.module("MyApp",[])
.controller("MyController", function($scope, $parse){
    var context = {
        name: "dreamapple"
    };
    var expression = "'Hello ' + name";
    var parseFunc = $parse(expression);
    $scope.ParsedValue = parseFunc(context);
    parseFunc.assign(context);
});