Business
Jobs
  • About Us
  • Solutions
    • Job Postings
      Post your job and receive qualified candidates in 48h.
    • Candidate Assessments
      500+ technical and psychological tests, plus anti-fraud.
    • Headhunting
      Tailor-made executive search from start to finish.
    • Payroll + EOR
      Payroll dispersal and EOR across 15+ LATAM countries.
  • Pricing
  • Jobs

0

264
Views
How to force an update to a template when a property doesn't change in angular 4

In my component which has a template like so

template: '<input type="text" value="{{formattedValue}}">',

When certain bad inputs are entered the internal formattedValue property doesn't change, but I then want the UI to then update to show the last correct value.

For example, if the components this.formattedValue is 1,000 and the user update the input to have the text 1,000x I then want to the input to be 1,000 again. Currently this doesn't happen. Of course I can update the DOM with the Dom api in the function but I would prefer to use the template.

over 4 years ago · Santiago Trujillo
1 answers
Answer question

0

template: '<input type="text" [ngValue]="formattedValue" (ngValueChange)="checkValue($event)">',


formattedValue:string = '';
constructor(private cdRef:ChangeDetectorRef) {}

checkValue(event) { 
  if(event == /* invalid */) {
    this.cdRef.detectChanges();
  } else {
    this.formattedValue = event;
  }
}
over 4 years ago · Santiago Trujillo Report
Answer question
Find remote jobs

Discover the new way to find a job!

Top jobs
Top job categories
Business
Post vacancy Pricing Sales
Legal
Terms and conditions Privacy policy
© 2026 PeakU Inc. All Rights Reserved.
Andres GPT
Show me some job opportunities
There's an error!