ons-lazy-repeat

Using this component a list with millions of items can be rendered without a drop in performance. It does that by “lazily” loading elements into the DOM when they come into view and removing items from the DOM when they are not visible.

Tutorial

See also

Properties

Name Description
delegate Specify a delegate object to load and unload item elements.
delegate.createItemContent

This function should return a HTMLElement. To help rendering the element, the current index and a template is supplied as arguments. The template is the initial content of the <ons-lazy-repeat> element.

delegate.countItems Should return the number of items in the list.
delegate.calculateItemHeight

Should return the height of an item. The index is provided as an argument. This is important when rendering lists where the items have different height. The function is optional and if it isn’t present the height of the first item will be automatically calculated and used for all other items.

delegate.destroyItem

This function is used called when an item is removed from the DOM. The index and DOM element is provided as arguments. The function is optional but may be important in order to avoid memory leaks.

delegate.configureItemScope Function which recieves an index and the scope for the item. Can be used to configure values in the item scope.

Methods Summary

Signature Description
refresh() Refresh the list. Use this method when the data has changed.

Methods

refresh()

Refresh the list. Use this method when the data has changed.

Discussion

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