@angular/core

afterNextRender

function

Developer preview

Register a callback to be invoked the next time the application finishes rendering, during the mixedReadWrite phase.

  
    function afterNextRender(  callback: VoidFunction,  options?: AfterRenderOptions): AfterRenderRef;

Register a callback to be invoked the next time the application finishes rendering, during the mixedReadWrite phase.

You should prefer specifying an explicit phase for the callback instead, or you risk significant performance degradation.

Note that the callback will run

in the order it was registered
on browser platforms only
during the mixedReadWrite phase

Components are not guaranteed to be hydrated before the callback runs. You must use caution when directly reading or writing the DOM and layout.

Use afterNextRender to read or write the DOM once, for example to initialize a non-Angular library.

Example

          @Component({  selector: 'my-chart-cmp',  template: `<div #chart>{{ ... }}</div>`,})export class MyChartCmp {  @ViewChild('chart') chartRef: ElementRef;  chart: MyChart|null;  constructor() {    afterNextRender({      write: () => {        this.chart = new MyChart(this.chartRef.nativeElement);      }    });  }}