Created
August 11, 2016 15:13
-
-
Save chl03ks/c7fbd8b7f632f5891e98854b024f0557 to your computer and use it in GitHub Desktop.
An Angular 2 pipe to capitalize the first letter of a string value.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import { Pipe, PipeTransform } from '@angular/core'; | |
/* | |
* Capitalize the first letter of the string | |
* Takes a string as a value. | |
* Usage: | |
* value | capitalizefirst | |
* Example: | |
* // value.name = daniel | |
* {{ value.name | capitalizefirst }} | |
* fromats to: Daniel | |
*/ | |
@Pipe({ | |
name: 'capitalizeFirst' | |
}) | |
export class CapitalizeFirstPipe implements PipeTransform { | |
transform(value: string, args: any[]): string { | |
if (value === null) return 'Not assigned'; | |
return value.charAt(0).toUpperCase() + value.slice(1); | |
} | |
} |
Line 17:
Use
if (!value) return null;
Instead of
if (value === null) return 'Not assigned';
Nope, that would empty the 0 input.
Use
if (value === null || value === undefined) {
return '';
}
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
thanks bro