Infinite Scrolling Table in AngularJS

[Gordon McGuire]

Hi,

So I'm looking into using AngularJS for a project at work. We currently use ExtJS, which is ok but kind of ugly. I think I'd be able to recreate most of the ExtJS functionality that we need in AngularJS, except for the infinite scrolling grid. See these examples: http://dev.sencha.com/deploy/ext-4.0.1/examples/grid/infinite-scroll.html http://ext4all.com/post/extjs-4-1-grid-infinite-scroll-in-mvc

I've seen examples of infinite scrolling in AngularJS but they don't really address the problem that if you have a huge amount of data then eventually the browser is going to slow down to stand still. With ExtJS, there's only ever a small subset of data actually being shown, but the user is given the impression that all the data has been loaded.

How would I go about implementing this in AngularJS?

[Peter Bacon Darwin]

I have a feeling that ng-grid has infinite scrolling built in: http://angular-ui.github.com/ng-grid/#/overview

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[Gordon McGuire]

Wow! ng-grid has pretty much exactly what I need in the Server-Side Paging Example. Never noticed before because they don't advertise the infinite scrolling.

Thanks Peter fro pointing that out!

[Jonathan Card]

Does ng-grid actually have infinite scrolling paged from the server? Its not a feature I thought it had, but I've only ever looked at it casually (BTW. thanks to Tim and Jonathon for this project! Its looking good.). I'm still using a wrapper over SlickGrid to support big data-sets, but would love to use a more Angular-bred solution. ng-grid looks awfully close with the exception of this feature. 

Cheers,

Jon

[Gordon McGuire]

Hey,

After a little more looking around, it turns out ng-grid doesn't have infinite scrolling :( Kind of disappointing there isn't an Angular way for this yet. I want to have splitters and an infinite grid on one of my apps pages but there just isn't a way to do it in angular. Only other library that does what I need is ExtJS, but I don't think that would play well with AngularJS.

[Josh Kurz]

This is infinite scrolling in a table with AngularJS. http://jsfiddle.net/joshkurz/yaPK7/ 

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Josh Kurz

http://dillingermediaonline.com

[Ran RanUser]

Is Angular still keeping auto-binding references to the lower numbered items.rows that go off screen as you scroll down?  

I just assumed to implement infinite scrolling with no performance issues, the array used by the repeater needs to be constantly maintained to only contain the visible rows (constantly removing lower numbered rows when scrolling down, and removing higher numbered rows when scrolling up.).  So if the scroll area is designed to show 50 visible rows, manage the items array to also only contain approx. 50 items.  

Does Angular still bind/perform dirty checking with items that are off screen?

Thanks!