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/