Polymer 0.8 x-autobind

frederi...@gmail.com

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Mar 11, 2015, 7:51:26 AM3/11/15

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Hi All,

I'm doing some experiments with the 0.8-preview branch and I'm having and issue with the x-autobind template:

<body>
  <template is="x-autobind">
    <input type="number" min="0" max="100" step="1" value="{{val}}">
    <input type="range"  min="0" max="100" step="1" value="{{val}}">
  </template>

  <script>
    var template = document.querySelector('template');
    template.val = 42;
  </script>
</body>

The initial value (42) is correctly set on both inputs but the property is not bound. The same code works as expected with 0.5.5 (auto-binding template).

fredj

Arthur Evans

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Mar 13, 2015, 1:12:04 PM3/13/15

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Data binding in 0.8 is one-way by default, so value changes aren't going to be propagated back to `val`. When creating an element, you can declare a property that's two-way bindable (by setting `notify: true`). There's no way to declare this on an x-autobind element.

That said, all of the x- elements are experimental (when they reach a more complete/final form, they'll be renamed). If you feel like there are crucial missing features, I'd recommend filing a bug or feature request.

- arthur

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frederi...@gmail.com

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Mar 16, 2015, 4:06:54 AM3/16/15

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Thanks for the response.

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