用jquery hammer.js 2和事件授权长按（按住） [英] Long press (hold) with jquery hammer.js 2 and event delegation

问题描述

我最近升级到hammer.js 2并且我注意到的第一件事之一是hold已被press取代。

I recently upgraded to hammer.js 2 and one of the first things a I noticed was that "hold" has been replaced with "press".

我的旧代码在事件委托中运行良好，但是当我将它放在特定元素上时，切换到仅按下似乎有效。

My old code worked fine with event delegation, but switching to press only seems to work when I put it on a specific element.

注意：我通过jquery插件使用hammer.js

Note: I use hammer.js through the jquery plugin

$(element).hammer().on("hold",callback);

工作正常

$(rootElement).hammer().on("hold",".elementSelector",callback);

工作正常

此

$(element).hammer().on("press",callback);

工作正常，而

$(rootElement).hammer().on("press",".elementSelector",callback);

没有。永远不会触发回调。

does not. The callback is never fired.

推荐答案

新版本中的Hammer事件已经简化了速度。要重新启用事件委派，只需添加domEvents：true作为选项：

Hammer events have been simplified for speed in the new version. To reenable event delegation, just add domEvents:true as an option:

$(rootElement).hammer({domEvents:true}).on("press",".elementSelector",callback);

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