How to execute javascript in Angular HTML files?

Tyler Morales 0
Viewed 36

I am trying to parse a date in angular client side, but when I try running client-side javascript code, I get an error of: Property 'Date' does not exist on type. Why can't I run js code in angular HTML files?

Here is an example:

// myComponent.component.html
<code>{{Date.parse("Thursday Sep 12 2022")}}</code>

My desired result should be a div with an string of milliseconds

date javascript angular
1 Answers

There are couple of ways:

  • first is to create inside class a property and use it in the template like
export class TestComponent {
  Date = Date
}

and then inside template use it like

{{Date.parse("Thursday Sep 12 2022")}}
  • second is to create a function like
export class TestComponent {
  convertDate(data: string): Date {
    return Date.parse(data);
  }
}}

and then inside template use it like

{{convertDate("Thursday Sep 12 2022")}}
  • third is to use pipes (standart ones like DatePipe) or create your own

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({ name: 'customDatePipe' }) export class CustomDatePipe implements PipeTransform { transform(value: string): Date { return Date.parse(data) . } }

and then inside template use it like

{{"Thursday Sep 12 2022" | customDatePipe)}}
Denis R0
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