Thank you Eric, it was my understanding from one of the talks that passing data through attributes is a slow process, I've tested and it doesn't look like Polymer tries to serialize my object into a string (at least DOM does not show this), so I assume that it goes through as object directly.
Thanks a lot for suggesting initial-count and target-framerate. On Friday, January 22, 2016 at 6:34:00 PM UTC-5, Eric Bidelman wrote: > > In http://polymer.github.io/polymer/ under dom-repeat, check out > initialCount and targetFramerate. These put dom-repeat into a chunked model > and can help with performance when rendering large lists. > > <template is="dom-repeat" items="[[items]] initial-count="30" > target-framerate="30"> > <my-element foo="[[item]]"> </my-element> > </template> > > You're saying you don't want to use data binding on my-element to set > it's foo property? I'd be curious to see your example and if it has > performance issues using bindings. Bindings are getters/setters in > Polymer. If anything, the bottleneck may instead be rendering a huge > number of items all at once. This is why we have iron-list and dom-repeat > in chunked mode. > > > > On Fri, Jan 22, 2016 at 2:54 PM Sergei Mutovkin <[email protected] > <javascript:>> wrote: > >> Hello, >> >> I'm trying to figure out what is the recommended way to pass a large >> JavaScript object to an element. Why? >> >> I follow a pattern presented during Polymer Summit where I perform AJAX >> request inside a custom element, I receive back an array with large >> (hundreds) of properties each. To present this data I would like to use >> dom-repeat over my custom element, i.e. I would like to pass largish "item" >> to the element without using element parameters. >> >> Thanks in advance. >> >> Follow Polymer on Google+: plus.google.com/107187849809354688692 >> --- >> You received this message because you are subscribed to the Google Groups >> "Polymer" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/polymer-dev/26e1f631-8059-4340-af3f-7cb1fe907fa6%40googlegroups.com >> >> <https://groups.google.com/d/msgid/polymer-dev/26e1f631-8059-4340-af3f-7cb1fe907fa6%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > Follow Polymer on Google+: plus.google.com/107187849809354688692 --- You received this message because you are subscribed to the Google Groups "Polymer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/polymer-dev/a02f71f0-9e55-4af5-bd92-3d51c81fa69a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
