title: Angular 2: How to add dynamically html attributes (aria-hidden = "true") to all elements directly under the body?
body: <p>I have made a custom Modal implementation and want also to ensure accessibility. So when a modal window pops up (modal element is added directly to the document body), all the other elements in body (direct children of body) should have aria-hidden = "true". How can i add this dynamically to all body children?</p>