您如何实现这一点?
我想到了一些行为,并使用下来和 up 事件与一些去抖动来管理这样一个新事件的技巧,但这意味着我必须使一个自定义元素来使用这个行为,例如直接使用它,就像我想要的任何元素一样:
< div on-long-press =_ cheese> ...< / div>这不方便。
你有其他解决方案吗?
解决方案您不必为此创建自定义元素。这是聚合物行为所适用的。它们为不同的聚合物元素提供了一种共享共同行为的方法。
对于实现长按的实际javascript,您可以从这个疑问。
It seems like long-press event is not part of the Polymer's specifications.
How would you implement that ?
I thought about using a behavior and using down and up event with some debounce tricks to manage such a new event but that means I have to make a custom element to use this behavior and can't for example use it directly on any elements I want like :
<div on-long-press="_cheese">...</div>which is not convenient.
Would you have other solutions ?
解决方案You don't have to make a custom element for this. This is what polymer behaviors are for. They provide a way for different polymer elements to share common behaviors.
As for the actual javascript for implementing the long-press you can get ideas from this question.
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