Angular 2 - Number to String Conversion using pipe

Question

I am trying to convert a number value to a string in angular 2 using typescript within a pipe. It complains

Type string is not assignable to type number

. My pipe is as follows.

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

@Pipe({ name: 'pxsuffix'

}) export class pxsuffix implements PipeTransform {

transform(input: number): number {

if ((input > 0)) {
    input = input.toString(),
}

return (
    input = input + 'px',

);
}
}

ZanattMan · Accepted Answer · 2017-02-15 12:12:01Z

14

Your function is asking for returning a Number and you are returning a String. Try:

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

@Pipe({ name: 'pxsuffix'

}) export class pxsuffix implements PipeTransform {

transform(input: number): string{ //string type
   return input + 'px';
} }

edited Feb 15, 2017 at 12:12

answered Feb 15, 2017 at 11:51

ZanattMan

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1 Comment

ZanattMan Over a year ago

Can you please accept the answer and up vote it so other people can use it?

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