How to prevent bsValueChange from firing on page load in angular?

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I have been using ngx-bootstrap's datepicker to listen for an onchange event so that I could fetch data whenever the user changes the date from input.

Everything works fine except for the fact bsValueChange fires initially on page load which returns an Unhandled rejection SequelizeDatabaseError: invalid input syntax for type date: "Invalid Date".

Here is my datepicker code block

<input class="form-control" #drp="bsDaterangepicker" bsDaterangepicker [(ngModel)]="bsRangeValue" [bsConfig]="{ rangeInputFormat: 'MM/DD/YYYY' }"
  (bsValueChange)="onValueChange($event)">

I have looked into this github issue as well but this is not working for me either as ngModelChange doesn't work anymore.

I only want bsValueChange to fire once when the entire page has loaded.

use onHidden event instead of bsvalueChange

How to prevent bsValueChange from firing on page load in angular , Everything works fine except for the fact bsValueChange fires initially on page load which returns an Unhandled rejection  Let me know any possible solution as now, on every page load all the APIs are triggering edit API which indeeds replaces the value in model and re-trigger bsValueChange event. So kinda stuck in infinite loop. Versions of ngx-bootstrap, Angular, and Bootstrap: ngx-bootstrap: 1.9.3 Angular: 4.3.6 Bootstrap: 3.3.7 👍

While page is loading, the onValueChange($event) method will be called. I found no way to prevent this instead you can try something like this.

I'm also facing the same issue. Finally, fixed it. Have a number variable declared outside the method.

counter =0;
OnChangeValue($event){
     this.counter = this.counter+1;
     if(this.counter>2 && event.length!=0){
      -- Proceed with your code --
}

Happy Coding.

How do I prevent bsValueChange to fire on initialising the , How do I prevent bsValueChange to fire on initialising the value from API? Let me know any possible solution as now, on every page load all the Versions of ngx-bootstrap, Angular, and Bootstrap: @valorkin then do we have any method​/event that is fired when we select date from the dropdown? How to prevent bsValueChange from firing on page load in angular? I worked around this problem by setting a component handleDatepickerEvents flag which starts as false and is set to true in ngAfterViewInit().

I worked around this problem by setting a component handleDatepickerEvents flag which starts as false and is set to true in ngAfterViewInit().

The onValueChange() function just needs to ignore changes when handleDatepickerEvents is false.

How do I prevent bsValueChange to fire on initialising , Let me know any possible solution as now, on every page load all the APIs are triggering edit API which indeeds replaces the value in model and re-trigger bsValueChange event. So kinda ngx-bootstrap: 1.9.3 Angular: 4.3.6 Bootstrap: 3.3.7. Doing so will prevent lifecycle hooks such as ngOnInit from firing. Additionally, asynchronous state changes may not render properly. Ionic Page Events. In addition to the Angular life cycle events, Ionic Angular provides a few additional events that you can use:

Events, Fired when the date picker is hidden. clearDate¶. Fired when the date is cleared, normally when the “clear” button (enabled with the clearBtn  More technical geeky details: it's a Progressive Web App (PWA) built in Angular/Ionic and hosted on Google Firebase (free tier, since I'm the sole user of the app). Because it is a PWA, the app is accessible from any browser/any device and it can also be added to the home screen of your device so that it has the same look and feel as a native

Ngx Datepicker (UTC Datepicker Design), ngOnInit() {} bsValueChange(val){ setTimeout(()=>{ this.value = val; if (val instanceof Date){ this.onChange(new Date(val.getTime() - val. Why your Angular App is not Working: 11 common Mistakes. Resolving problems of your angular application can be very challenging. When your angular app is not working and all it gives you are some cryptic red lines in a console. Especially when you are a beginner, these problems can turn the development process with angular into a real pain.

ngx-bootstrap, isOpen = true;\n /** This event fires immediately after close instance method is called,\n * $event is _slides.remove(remIndex);\n // prevents exception with changing some value after bsValueChange.emit(value);\n }\n ngOnInit() {\n this​. fired when page was changed, $event:{page, itemsPerPage} equals to\n * object  Animations seem to fire on page load when within a directive template. This does not occur when the animation resides on the app's initial html page. I have also tested this in angular 1.3.0-beta.16 with the same result.

Comments
  • Can you add more info on what is being done onValueChane ?
  • So, whenever any date is selected, onValueChange is fired to fetch data from the database with the help of a service to display it on the frontend .
  • and why can't you do with null checks in this method ?
  • I'm using an inline picker. So kindly give this Solution.