How to add Validation pattern not to allow only space in input Angular2?

Question

I used formBuilder in Angular2 and want to add validation pattern for not to allow \"only spaces\" in input.

Answer 1

try this, it will return false while sapce key press :

@Component({
  selector: 'my-app',
  template: `
    

       
    
  `,
  providers: [myService]
})

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