这个错误通常是由于在组件变更检测期间更改了一个属性或执行了一个带有副作用的方法而引起的。在这种情况下,你可以使用Angular的ChangeDetectorRef服务来手动进行变更检测并避免这个错误。
以下是一些可能的
import { Component, OnInit, ChangeDetectorRef } from '@angular/core';
@Component({
selector: 'app-my-component',
template: `...`
})
export class MyComponent implements OnInit {
myProperty: any;
constructor(private cdRef: ChangeDetectorRef) { }
ngOnInit() {
// some asynchronous operation that updates myProperty
setTimeout(() => {
this.myProperty = 'new value';
this.cdRef.detectChanges(); // manually detect changes
}, 1000);
}
}
import { Component, OnInit, NgZone } from '@angular/core';
@Component({
selector: 'app-my-component',
template: `...`
})
export class MyComponent implements OnInit {
myProperty: any;
constructor(private ngZone: NgZone) { }
ngOnInit() {
// some asynchronous operation that updates myProperty
setTimeout(() => {
this.ngZone.run(() => {
this.myProperty = 'new value';
});
}, 1000);
}
}
import { Component, OnInit, ChangeDetectionStrategy } from '@angular/core';
@Component({
selector: 'app-my-component',
template: `...`,
changeDetection: ChangeDetectionStrategy.OnPush
})
export class MyComponent implements OnInit {
myProperty: any;
ngOnInit() {
// some asynchronous operation that updates myProperty
setTimeout(() => {
this.myProperty = 'new value';
}, 1000);
}
}