用于angular2中对象的$$ hashKey吗？

Question

I am new in angular2 and wondering if there is any alternative to $$hashKey in angular2.

I used $$hashKey in angularjs for identifying objects.

for ex.

var arrayItem = {};
for (var key in arrayInstance[0]) {
    if (arrayInstance[0].hasOwnProperty(key)) {
       console.log('Key ' + key);
       if (key != '$$hashKey') {
           arrayItem[key] = angular.copy(arrayInstance[0][key]);
       }
    }
}
arrayInstance.push(arrayItem);

so I want to alternative for this in angular2.

any inputs?

thanks

Answer 1

请阅读有关该主题的深入研究， 以Angular 2中的ngFor循环了解“对象身份” 。