我刚开始使用js,ts,ionic
我在home.ts中得到了一个名为“商店”的数组:
0: {name: "wwwe", floor: 1}
1: {name: "weeqe", floor: -3}
2: {name: "weewqe", floor: -2}
3: {name: "qweqweqwe", floor: -2}
我也需要通过* ngFor显示它。我在home.html中有这个
<ion-card *ngFor="let store of stores">
<ion-card-header >
{{store.name}}
</ion-card-header>
</ion-card>
但这是显示空白页!
帮助请
我也尝试过这个:
<ion-card *ngFor="let store of stores; let i=index">
<ion-card-header >
{{store[i].name}}
</ion-card-header>
</ion-card>
不工作。
我读到必须将对象更改为数组,但是我不了解如何执行此操作。我需要将所有数组值放在一个位置。
home.ts:
import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { Http } from '@angular/http';
import 'rxjs/add/operator/map';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
constructor(public navCtrl: NavController, public http: Http) {
var stores: Store[] = []
var json;
this.http.get('http/link/to/json').map(res => res.json()).subscribe(data => {
json = data.data;
for (var i of json.stores){
stores.push({ 'name': i.name, 'floor': i.floor[0] });
}
});
console.log(stores);
}
}
这是show console.log(商店):
答案 0 :(得分:2)
您必须在构造函数外部声明stores
变量
import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { Http } from '@angular/http';
import 'rxjs/add/operator/map';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
// This way so you can reference it in the ngFor
stores: Store[] = []
constructor(public navCtrl: NavController, public http: Http) {
var json;
this.http.get('http/link/to/json').map(res => res.json()).subscribe(data => {
json = data.data;
for (var i of json.stores){
this.stores.push({ 'name': i.name, 'floor': i.floor[0] });
}
});
console.log(this.stores);
}
}