是否可以监听使用NG-键preSS箭头键preSS？ [英] Is it possible to listen for arrow keyspress using ng-keypress?

问题描述

我试图创建一个类似于KONAMI code的相互作用向上，向上，向下，向下，A，B，A，B，输入 - >有事

I'm trying to create an interaction similar to the konami code "up,up,down,down,a,b,a,b, enter" -> something happens.

是否可以监听使用NG-键preSS箭头键preSS？它似乎不工作？

Is it possible to listen for arrow keyspress using ng-keypress? it seems to not work?

HTML

input( ng-keypress='changed($event)'  )

的js

$scope.changed = (evt) ->
    console.log(evt)

这不会注销箭头键的事件？

this will not log out arrow key events?

我必须推出窗外对我自己的听众？如果是的话我怎么能在角达到这个目标？

Do I have to roll out my own listeners on the window? if so how can I achieve this in angular?

推荐答案

演示

DEMO

$scope.key = function($event){
    console.log($event.keyCode);
    if ($event.keyCode == 38)
        alert("up arrow");
    else if ($event.keyCode == 39)
        alert("right arrow");
    else if ($event.keyCode == 40)
        alert("down arrow");
    else if ($event.keyCode == 37)
        alert("left arrow");
}

修改

从更改它NG键preSS 到 NG-KEYDOWN。的演示

<input ng-keydown="key($event)" />

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