angular6利用ngContentOutlet实现组件位置交换(重排)

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

@Component({
 selector: 'app-button',
 template: `按钮`,
 styleUrls: ['./button.component.css']
})
export class ButtonComponent implements OnInit {

 constructor() { }

 ngOnInit() {
 }

}

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

@Component({
 selector: 'app-text',
 template: `
 {{textName}}
 
 `,
 styleUrls: ['./text.component.css']
})
export class TextComponent implements OnInit {
 @Input() public textName = 'null';
 constructor() { }

 ngOnInit() {
 }

}

import { TextComponent } from './text/text.component';
import { ButtonComponent } from './button/button.component';
import { Component } from '@angular/core';

@Component({
 selector: 'app-root',
 template: `
 
  
 
 

 swap
`,
 styleUrls: ['./app.component.css']
})
export class AppComponent {
 public componentArr = [TextComponent, ButtonComponent];
 constructor() {
 }
 public swap() {
  const temp = this.componentArr[0];
  this.componentArr[0] = this.componentArr[1];
  this.componentArr[1] = temp;
 }
}