renderOuter

renderOuter is alternative to renderTo.
The only difference is that widget renders not in container but fills containers.
It helps to avoid using extra dom element as container. .

Example: String

<div id="container"></div>
...

new FancyGrid({    
  renderOuter: 'container',
  width: 690,
  height: 350,
  ...

Example: Dom

<div id="container"></div>
...

new FancyGrid({
  renderOuter: document.querySelector('#container'),
  width: 690,
  height: 350,
  ...

Default

 undefined