# autoRefresh

##### Type `Boolean`

##### Default `true`

Automatically recalculate and cache the dimensions of the items.

When set to `true`, this option tells the instance to recalculate and cache the dimensions of all selectable items on `mousedown` / `touchstart`.

If you now that the dimensions of the selectable items won't change, i.e. width, height and position in the document remain unchanged, then this option can be set to `false`.

If the dimensions of the items do change and the this option is set to `false`, then the lasso may not correctly highlight an element for selection.

You can leave this option set to `false` and manually recalculate and cache the dimensions by calling the `recalculate()` method.