Angular2 - Validate and submit form from outside
<p>I have a simple form that looks like this</p>

<pre><code>&lt;form (ngSubmit)="save()" #documentEditForm="ngForm"&gt;
...
&lt;/form&gt;
</code></pre>

<p>and need to <strong>submit</strong> the the form and check its <strong>validity</strong> from outside </p>

<p>eg. Either submit  it programatically, or with a <code>&lt;button type="submit"&gt;</code> that is outside the <code>&lt;form&gt;</code> tags.</p>