在@Input()更改时更新变量

import { Component, Input, OnChanges, SimpleChanges } from '@angular/core';

@Component({
  selector: 'app-child',
  template: '...',
})
export class ChildComponent implements OnChanges {
  @Input() data: any;

  ngOnChanges(changes: SimpleChanges) {
    if (changes.data) {
      // 更新变量的逻辑
      this.updateVariable();
    }
  }

  updateVariable() {
    // 更新变量的具体实现
  }
}

import { Component, Input } from '@angular/core';

@Component({
  selector: 'app-child',
  template: '...',
})
export class ChildComponent {
  private _data: any;

  @Input()
  set data(value: any) {
    this._data = value;
    // 更新变量的逻辑
    this.updateVariable();
  }

  get data(): any {
    return this._data;
  }

  updateVariable() {
    // 更新变量的具体实现
  }
}