我试图学习Angular 2.我的理解是视图中的插值项在模型中更新其相应变量时会更新,但是在下面的代码中我没有看到这种行为。
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'ai-header',
templateUrl: 'app/header/header.component.html',
styleUrls: ['app/header/header.component.css'],
})
export class HeaderComponent implements OnInit {
currentTime: Date = new Date();
getCurrentTime(): void{
let dateTime = new Date();
let year = dateTime.getFullYear();
let month = dateTime.getMonth();
let day = dateTime.getDate();
let hour = dateTime.getHours();
let minute = dateTime.getMinutes();
let second = dateTime.getSeconds();
dateTime = new Date(year, month, day, hour, minute, second)
this.currentTime = dateTime;
}
ngOnInit(): void {
setInterval(this.getCurrentTime, 1000);
}
}

为什么在' currentTime'组件的属性是否更新?
答案 0 :(得分:3)
我认为应该是:
ngOnInit(): void {
setInterval(this.getCurrentTime.bind(this), 1000);
}