我在Web应用程序上使用angularjs,我需要弄清楚如何在单击某处时检测到是否按下了ctrl,shift或alt之类的键。

例如,使用jQuery,我可以通过访问Click函数参数来实现。

是否有一些开箱即用的方式来获取有关 Angular 的信息?

最佳答案

看看这个关于AngularJS key handling的美丽东西

因此,Ctrl,shift,alt的键代码将是

Ctrl-17
Alt-18
Shift-16


Working Demo

HTML

<!DOCTYPE html>
<html>
<head>
  <script src="angular.js"></script>
  <script src="script.js"></script>
</head>

<body ng-app="mainModule">
  <div ng-controller="mainController">
    <label>Type something:
      <input type="text"
             ng-keydown="onKeyDown($event)"
             ng-keyup="onKeyUp($event)"
             ng-keypress="onKeyPress($event)" />
    </label><br />
    <strong>KEY DOWN RESULT:</strong> {{onKeyDownResult}}<br />
    <strong>KEY UP RESULT:</strong> {{onKeyUpResult}}<br />
    <strong>KEY PRESS RESULT:</strong> {{onKeyPressResult}}
  </div>
</body>
</html>

脚本
angular.module("mainModule", [])
  .controller("mainController", function ($scope)
  {
    // Initialization
    $scope.onKeyDownResult = "";
    $scope.onKeyUpResult = "";
    $scope.onKeyPressResult = "";

    // Utility functions

    var getKeyboardEventResult = function (keyEvent, keyEventDesc)
    {
      return keyEventDesc + " (keyCode: " + (window.event ? keyEvent.keyCode : keyEvent.which) + ")";
    };

    // Event handlers
    $scope.onKeyDown = function ($event) {
      $scope.onKeyDownResult = getKeyboardEventResult($event, "Key down");
    };

    $scope.onKeyUp = function ($event) {
      $scope.onKeyUpResult = getKeyboardEventResult($event, "Key up");
    };

    $scope.onKeyPress = function ($event) {
      $scope.onKeyPressResult = getKeyboardEventResult($event, "Key press");
    };
  });

关于javascript - 如何在单击AngularJS时检测按键,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/23651954/

10-09 17:55
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