捕获“输入”在Android / Cordova / Knockout中使用数字输入进行按键 [英] Capture "Enter" keypress with numeric input in Android/Cordova/Knockout

问题描述

我使用Cordova / PhoneGap 2.5.0，Knockout 2.1.0和jQuery Mobile 1.3.0创建了一个Android应用程序。

I am creating an Android application using Cordova/PhoneGap 2.5.0, Knockout 2.1.0 and jQuery Mobile 1.3.0.

我创建了一个输入类型number，这个输入是与Knockout的数据绑定的值。它也是一个关键的新闻事件数据。我打算捕获用户按下 enter 键。

I have created an input with type "number", this input is databound with Knockout on it's value. It is also databound to a key press event. I'm intending to catch the user pressing the enter key.

<input type="number" data-bind="value: $root.myInputValue, event: { keypress: $root.myInputKeypress }" min="0" step="1" max="29">


self.myInputKeypress = function() {
    var keyCode = (event.which ? event.which : event.keyCode);

    alert(keyCode);

    if (keyCode === 13) {
        //Do work here

        return false;
    }

    return true;
};

当我按一个允许的键，如一个数字时，代码按预期运行，按下的键代码警报。当我在键盘上按 enter 时，没有任何反应，似乎Android会从键认为不相关的键中抑制事件。

When I press an allowed key such as a number the code runs as expected and the pressed keys code is alerted. When I press enter on the keyboard nothing happens, it seems that Android is suppressing events from keys it thinks are not relevant.

方法改变这种行为，使我可以捕获进入

Is there a way to change this behaviour so that I can capture the user hitting enter?

推荐答案

使用 Ionic / Angular

If you are using Ionic/Angular

<input ng-keypressed="myKeyPressed($event)" ng-model="myField">

self.myKeyPressed = function(keyEvent) {
    if(keyEvent.keyCode == 13) //do things
}

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