windows - 运行时错误 : Cannot read property 'push' of undefined

Question

我收到无法读取 ionic2 中未定义属性 'push' 的错误

addReview(){

let modal = this.modalCtrl.create(AddReviewPage);

modal.onDidDismiss(review => {
  if(review){
    this.reviews.push(review);
    this.reviewService.createReview(review);        
  }
});

Answer 1

您只需声明并初始化您的reviews数组，如下所示。

export class YourPage {

    reviews:any=[];//here is the place

    constructor(){}

    addReview(){
      let modal = this.modalCtrl.create(AddReviewPage);
      modal.onDidDismiss(review => {
      if(review){
        this.reviews.push(review);
        this.reviewService.createReview(review);        
      }
    });
}