Angular pipe to replace characters in a string

Generate a new pipe using the Angular CLI

ng g pipe pipes/replace

Code inside the new pipe (pipes/replace.pipe.ts)

...
transform(input: string, from: string, to: string): string {
   const regEx = new RegExp(from, 'g');
   return input.replace(regEx, to);
}

Usage

// page.component.html
// replaces underscores with spaces
...
<span>{{ myString | replace:'_':' '}}</span>