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]> 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]. > 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/CACGqRCANLQHHAMqRcSNQPoJyxSbrt%3D9638pRWnxGybqvLizMVw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
