内部jQuery函数我可以调用Angular 5函数

Question

我正在尝试在jQuery函数内调用onPaymentStatus（）函数。但是我无法使用“这个”范围

this.braintree.client.create({
  authorization: 'client_token'},
  (err, client) => {
      client.request({
        endpoint: 'payment_methods/credit_cards',
        method: 'post',
        data: data
      }, function (requestErr, response) {

       if (requestErr) { throw new Error(requestErr); }
       console.log('Got nonce:', response.creditCards[0].nonce);
       this.onPaymentStatus(response.creditCards[0].nonce); //
    });
});

onPaymentStatus (nonce) {
  console.log(nonce);
}

我收到错误ERROR TypeError：无法读取null的属性'onPaymentStatus'

Answer 1

您需要引用jQuery函数外部的组件，作为其this内部更改的含义

const component = this;

然后打电话

component.onPaymentStatus()