4
是否可以在angularJS中觀察整個對象?
我創建了一個plunker向你展示我的意思: http://plnkr.co/edit/QxLzbwKkJ5k50DiP8OP1
當我改變R G或B值的顏色對象將不會觸發更改事件,只有R G或B值火災。 我可以自己發動一個事件,以便我知道整個對象改變了嗎?
而且這裏的plunker是代碼:
function ColorObject()
{
this.r = 0;
this.g = 0;
this.b = 0;
this.c = 0;
this.m = 0;
this.y = 0;
this.k = 0;
this.hex = "#ff0000";
this.oppositeHex = "#00ffff";
}
var chColorChanger = angular.module('chColorChanger',[]);
chColorChanger.controller('chColorChangerCtrl', function ($scope,$document,$element)
{
$scope.colors = new ColorObject();
$scope.gMessage = 0;
$scope.message = 'scope initialized';
});
chColorChanger.directive('chColorValue',['$document',function($document) {
return {
link: function (scope, elem, attrs) {
scope.$watch('colors',function(newValue,oldValue){
scope.gMessage++;
});
scope.$watch('colors.r', function (newValue,oldValue) {
scope.message = 'r changed';
});
scope.$watch('colors.g', function (newValue,oldValue) {
scope.message = 'g changed';
});
scope.$watch('colors.b', function (newValue,oldValue) {
scope.message = 'b changed';
});
}
}
}]);