我怎么知道模板重复已经完成? [英] How can I know that Template Repeat has finished?
问题描述
元素需要一些时间来进行模板重复渲染,以呈现所有内容,因此使用纸张旋转器来通知用户等待.
Element needs some time for template-repeat to render all content, so paper-spinner is used to notify the user to wait.
我怎么知道模板重复已经完成,所以我可以关闭微调器?
How can I know that template-repeat has finished so I can turn off the spinner?
和相关的问题:如何选择内部元素"item-details"?同样,必须先完成模板重复.
And related question: how can inner element "item-details" be selected? Again, template-repeat has to be finished first.
这是我正在使用的代码:
Here's the code I am using:
<polymer-element name="item-list">
<template>
<paper-spinner active></paper-spinner>
<template id="repeat_items" repeat="{{ item in car.items }}">
<item-details id="item_details" item="{{item}}"></item-details>
</template>....
这是问题的模拟: plnkr.co
修改
研究链接:
polymer-how-to-watch-change -in-content-properties
推荐答案
我建议使用类似的方法- http: //jsbin.com/bifene/4/edit
I suggest something like this - http://jsbin.com/bifene/4/edit
利用Polymer的onMutation函数监视DOM节点的更改.请注意,它只会被调用一次,因此您每次加载新商品时都需要重新注册&重新启动微调器.
Leverages Polymer's onMutation function to watch for changes to a DOM node. Note that it only gets called once so you'll need to re-register it every time you load new items & restart the spinner.
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