Angular 2 Form Serialization Into JSON Format

You can use JSON.stringify(form.value):

submit() {
  let resource = JSON.stringify(this.form.value);

  console.log('Add Button clicked: ' + resource);

  this.service.create(resource)
    .subscribe(response => console.log(response));
}

Result in Chrome DevTools:

You can use the getRawValue() function if you're using a FormGroup, to return an object that can then be serialized using JSON.stringify().

import { Component, OnInit } from '@angular/core';
import { FormGroup, FormBuilder } from '@angular/forms';
import { Http } from '@angular/http';

@Component({
    selector: 'my-component',
    templateUrl: 'my-component.component.html'
})
export class MyComponent implements OnInit {

    form: FormGroup;

    constructor(private fbuilder: FormBuilder,
                private http: Http) { }

    ngOnInit(){
        this.form = this.fbuilder.group({
            name: '',
            description: ''
        });
    }

    sendToAPI(){
        let formObj = this.form.getRawValue(); // {name: '', description: ''}

        let serializedForm = JSON.stringify(formObj);

        this.http.post("www.domain.com/api", serializedForm)
            .subscribe(
                data => console.log("success!", data),
                error => console.error("couldn't post because", error)
            );
    }
}

You are looking for JSON.stringify(object) which will give you the JSON represantation of your javascript object.

You can then POST this using the built-in HTTP service to your server.