sumDisplayed

If we have paging than there are 2 ways of summary rows.
1 - on all pages
2 - on displayed page.
By default it summaries column on displayed page.
To summary on all rows it requires to set sumDisplayed: false.

Example

new FancyGrid({
  ...,
  summary: {
    sumDisplayed: false
  },
  columns: [{
    ...,
	summary: 'sum'
  },{

Example: summary row position

new FancyGrid({
  ...,
  summary: {
    position: 'bottom'
  },
  columns: [{
    ...,
	summary: 'sum'
  },{

Default

true