Angularjs中的ng-touchstart和ng-touchend [英] ng-touchstart and ng-touchend in Angularjs
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问题描述
我有一个元素可以在 ng-mousedown 和 ng-mouseup 上触发函数。但是，它在触摸屏上不起作用，是否有任何指令，如 ng-touchstart 和 ng-touchend ？
I have an element which fires functions on ng-mousedown and ng-mouseup. However, It doesn't work on touch screen, is there any directive like ng-touchstart and ng-touchend?
推荐答案
有一个模块： https://docs.angularjs.org/api/ngTouch
但您也可以为事件编写自己的指令：
But you can write your own directives for events too:
<!doctype html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js"></script>
</head>
<body ng-app="plunker">
<div ng-controller="MainCtrl">
<div my-touchstart="touchStart()" my-touchend="touchEnd()">
<span data-ng-hide="touched">Touch Me ;)</span>
<span data-ng-show="touched">M-m-m</span>
</div>
</div>
<script>
var app = angular.module('plunker', []);
app.controller('MainCtrl', ['$scope', function($scope) {
$scope.touched = false;
$scope.touchStart = function() {
$scope.touched = true;
}
$scope.touchEnd = function() {
$scope.touched = false;
}
}]).directive('myTouchstart', [function() {
return function(scope, element, attr) {
element.on('touchstart', function(event) {
scope.$apply(function() {
scope.$eval(attr.myTouchstart);
});
});
};
}]).directive('myTouchend', [function() {
return function(scope, element, attr) {
element.on('touchend', function(event) {
scope.$apply(function() {
scope.$eval(attr.myTouchend);
});
});
};
}]);
</script>
</body>
</html>
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