Waypoints

Waypoint.viewportWidth()

This is a convenience method for retrieving the width of the window. Unlike its viewportHeight complement, this method does not need to work around iOS inconsistencies.

$('button.show-viewport-width').on('click', function() {
  notify('Viewport Width: ' + Waypoint.viewportWidth())
})

Show Viewport Width

This method often comes in handy when writing function offsets, particularly for horizontal waypoints. For example, if your horizontal waypoint has the default context of window, the right-in-view alias works out to be the following function offset:

offset: function() {
  return Waypoint.viewportWidth() - this.element.clientwidth
}