Solve the problem that the carousel image will appear blank for a short time when you first enter the page

Phenomenon description: Just after entering the page, there will be a 2-3 second blank in the carousel section, and then it will be displayed normally afterwards;

Framework: Angular + NG-ZORRO-antd

Solution: It is because the time interval of automatic switching leads to blank space. I set an identifier. When it is false at the beginning, it displays a newly added carousel component with no automatic switching and a time interval of 0; it changes immediately after the page is loaded. If true, display my original component again;

code:

/**
 * html 重点在于ngIf条件，如果init则显示时间间隔为5s的自动切换轮播图，
 * 否则显示不自动切换时间间隔为 0的轮播图
*/
<nz-content class="left-images">

    <nz-carousel *ngIf="init" #carousel [nzEffect]="effect" [nzAutoPlay]="true"                
        [nzDots]="false" [nzAutoPlaySpeed]="5000">
        <div class="go" nz-carousel-content *ngFor="let index of array">
            <div *ngIf="domain"><img [src]="index | imageUrl: defaultImg"></div>
            <div *ngIf="!domain"><img src="{
   
   {index}}"></div>
         </div>
    </nz-carousel>

    <nz-carousel *ngIf="!init" #carousel [nzEffect]="effect" [nzDots]="false" 
       [nzAutoPlaySpeed]="0">
       <div class="go" nz-carousel-content *ngFor="let index of array">
          <div *ngIf="domain"><img [src]="index | imageUrl: defaultImg"></div>
          <div *ngIf="!domain"><img src="{
   
   {index}}"></div>
        </div>
    </nz-carousel>

 </nz-content>

// ts代码 设置标识符，通过标识符来更改显示的组件

export class LoginComponent implements OnInit { 


    public init: boolean = false;

    ......  // 其他代码

    ngOnInit() {
    
        // 请求信息
        this.systemSetupService.getSystemInfoByDomainName().then(data => {
            const info: any = data;
            this.init = true;
            .... // 其他代码
        })


    }
}