AngularJS NG-KEYUP可以通过其中的关键是pressed？ [英] Can AngularJS ng-Keyup pass in which key was pressed?

问题描述

有关文档角的 ngkeyup 几乎是不存在的。我有我的观点一个容器div，我想申请按键事件，但我想从我的控制器功能控制它们。

The documentation for Angular's ngkeyup is virtually non-existant. I have a container div for my view that I want to apply key events to, but I want to control them from a function in my controller.

我试图做这样的事情：

查看：

<div class="container" ng-keyup="keyPress(e)"></div>

控制器：

$scope.keyPress = function(e){
   console.log(e); // where 'e' is the keycode of whatever was pressed
}

这是可能的呢？我找不到任何信息，任何地点，在什么 NG-KEYUP 实际上并和如何使用它！举例来说，我想触发一个事件时，左箭头键（37）是pressed，我怎么会用角实现这一目标？

Is this possible at all? I can't find any information, anywhere, on what ng-keyup actually does and how to use it! For instance, I want to trigger an event when the left arrow key (37) is pressed, how would I achieve this with Angular?

推荐答案

您可以做这样的事情，通过 $事件对象。

You can do something like, passing $event object.

＆LT; D​​IV CLASS =容器NG-KEYUP =键preSS（$事件）＆GT;＆LT; / DIV＆GT;

这是在文档中提到的

防爆pression到时KEYUP评估。 （Event对象可作为
  $事件，可以审问了关键code，Alt键，等等。）

Expression to evaluate upon keyup. (Event object is available as $event and can be interrogated for keyCode, altKey, etc.)

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