双括号 [[ ]] 与聚合物中的双括号 {{ }} [英] Double Brackets [[ ]] vs Double Braces {{ }} in Polymer
问题描述
解释双括号([[...]])和双括号({{...}})之间区别的简洁方法是什么?聚合物 1.0?
例如，在
<iron-ajax url="data.json" last-response="{{data}}" auto></iron-ajax><iron-list items="[[data]]" as="item"><模板><div>名称:<span>[[item.name]]</span></iron-list>
为什么 data 在一个地方被双大括号包围(last-response="{{data}}")但被双括号包围(items="[[data]]") 在另一个地方?
绑定可以是单向(使用 [[]])或双向(使用 {{}}，但也可以使用通知).
>
解释*-way绑定想想流量.单向绑定是当您更新模型时，视图会更新.反之亦然，则为双向绑定.
有关详细信息，请参阅文档.
What's a succinct way to explain the difference between double brackets ([[...]]) and double braces ({{...}}) in Polymer 1.0?
For instance, in the documentation for the <iron-list> element the sample HTML shows:
<template is="dom-bind">
<iron-ajax url="data.json" last-response="{{data}}" auto></iron-ajax>
<iron-list items="[[data]]" as="item">
<template>
<div>
Name: <span>[[item.name]]</span>
</div>
</template>
</iron-list>
</template>
Why is data bounded by double braces in one spot (last-response="{{data}}") but bounded by double brackets (items="[[data]]") in another spot?
Binding can be either one-way (using [[]]) or two-way (using {{}}, but also use notify).
To explain *-way binding think traffic. one-way binding is when you update model, the view gets updated. When the vice-versa is also true it is a two-way binding.
For more information see the documentation.
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