Angular5, on routing, url changes but it doesnt load the same page

developer

On click next, URL is getting change but the page, as per url doesn't load. when I click next, url changes and if I refresh the page using same url then it loads the correct page. Below is my ts and html code.

on ts

  ngOnInit() {
    const queryParams = this.route.snapshot.queryParams; // store query param value
    this.index = queryParams.index;
    this.step = queryParams.step;
    this.flowType = queryParams.flowType;
    this.stepper.selectedIndex = Number(this.step);
    console.log(this.index, "this.index", this.step, "this.step",  this.flowType, " this.flowType");
  }

on HTML

<div *ngIf="flowType === 'Prescription Drug Plan'">
  <app-form-navigation   (customHandle)="setApplicationQualification()" isQueryParamPreserve='true'
    nextPath="enrollments/steps/find-a-drug" [queryParams]='{index:2, step:0}' >
  </app-form-navigation>
</div>

tano

Angular won't reload the same component if you don't navigate away from it. you should use something similar:

constructor(protected route: ActivatedRoute){
}
ngOnInit(){
    this.route.queryParams.subscribe(params => this._init(params));
}
_init(queryParams){
    this.index = queryParams.index;
    this.step = queryParams.step;
    this.flowType = queryParams.flowType;
    this.stepper.selectedIndex = Number(this.step);
    console.log(this.index, "this.index", this.step, "this.step",  this.flowType, " this.flowType");

}

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